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mariadb/mysql-test/suite/sys_vars/r/sysvars_innodb.result
Sergei Golubchik 3361aee591 Merge branch '10.0' into 10.1
2016-06-28 22:01:55 +02:00

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select * from information_schema.system_variables
where variable_name like 'innodb%' and
variable_name not in (
'innodb_disallow_writes', # only available WITH_WSREP
'innodb_sched_priority_cleaner', # linux only
'innodb_use_native_aio') # default value depends on OS
order by variable_name;
VARIABLE_NAME INNODB_ADAPTIVE_FLUSHING
SESSION_VALUE NULL
GLOBAL_VALUE ON
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE ON
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Attempt flushing dirty pages to avoid IO bursts at checkpoints.
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT NONE
VARIABLE_NAME INNODB_ADAPTIVE_FLUSHING_LWM
SESSION_VALUE NULL
GLOBAL_VALUE 10.000000
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 10.000000
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE DOUBLE
VARIABLE_COMMENT Percentage of log capacity below which no adaptive flushing happens.
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 70
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_ADAPTIVE_HASH_INDEX
SESSION_VALUE NULL
GLOBAL_VALUE ON
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE ON
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Enable InnoDB adaptive hash index (enabled by default). Disable with --skip-innodb-adaptive-hash-index.
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_ADAPTIVE_MAX_SLEEP_DELAY
SESSION_VALUE NULL
GLOBAL_VALUE 150000
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 150000
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT The upper limit of the sleep delay in usec. Value of 0 disables it.
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 1000000
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_ADDITIONAL_MEM_POOL_SIZE
SESSION_VALUE NULL
GLOBAL_VALUE 8388608
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 8388608
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT
VARIABLE_COMMENT DEPRECATED. This option may be removed in future releases, together with the option innodb_use_sys_malloc and with the InnoDB's internal memory allocator. Size of a memory pool InnoDB uses to store data dictionary information and other internal data structures.
NUMERIC_MIN_VALUE 524288
NUMERIC_MAX_VALUE 9223372036854775807
NUMERIC_BLOCK_SIZE 1024
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_API_BK_COMMIT_INTERVAL
SESSION_VALUE NULL
GLOBAL_VALUE 5
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 5
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Background commit interval in seconds
NUMERIC_MIN_VALUE 1
NUMERIC_MAX_VALUE 1073741824
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_API_DISABLE_ROWLOCK
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Disable row lock when direct access InnoDB through InnoDB APIs
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT NONE
VARIABLE_NAME INNODB_API_ENABLE_BINLOG
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Enable binlog for applications direct access InnoDB through InnoDB APIs
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT NONE
VARIABLE_NAME INNODB_API_ENABLE_MDL
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Enable MDL for applications direct access InnoDB through InnoDB APIs
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT NONE
VARIABLE_NAME INNODB_API_TRX_LEVEL
SESSION_VALUE NULL
GLOBAL_VALUE 0
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 0
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT InnoDB API transaction isolation level
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 3
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_AUTOEXTEND_INCREMENT
SESSION_VALUE NULL
GLOBAL_VALUE 64
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 64
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Data file autoextend increment in megabytes
NUMERIC_MIN_VALUE 1
NUMERIC_MAX_VALUE 1000
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_AUTOINC_LOCK_MODE
SESSION_VALUE NULL
GLOBAL_VALUE 1
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 1
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT
VARIABLE_COMMENT The AUTOINC lock modes supported by InnoDB: 0 => Old style AUTOINC locking (for backward compatibility) 1 => New style AUTOINC locking 2 => No AUTOINC locking (unsafe for SBR)
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 2
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_BACKGROUND_SCRUB_DATA_CHECK_INTERVAL
SESSION_VALUE NULL
GLOBAL_VALUE 3600
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 3600
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE INT UNSIGNED
VARIABLE_COMMENT check if spaces needs scrubbing every innodb_background_scrub_data_check_interval seconds
NUMERIC_MIN_VALUE 1
NUMERIC_MAX_VALUE 4294967295
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_BACKGROUND_SCRUB_DATA_COMPRESSED
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Enable scrubbing of compressed data by background threads (same as encryption_threads)
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_BACKGROUND_SCRUB_DATA_INTERVAL
SESSION_VALUE NULL
GLOBAL_VALUE 604800
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 604800
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE INT UNSIGNED
VARIABLE_COMMENT scrub spaces that were last scrubbed longer than innodb_background_scrub_data_interval seconds ago
NUMERIC_MIN_VALUE 1
NUMERIC_MAX_VALUE 4294967295
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_BACKGROUND_SCRUB_DATA_UNCOMPRESSED
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Enable scrubbing of uncompressed data by background threads (same as encryption_threads)
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_BUFFER_POOL_DUMP_AT_SHUTDOWN
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Dump the buffer pool into a file named @@innodb_buffer_pool_filename
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_BUFFER_POOL_DUMP_NOW
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Trigger an immediate dump of the buffer pool into a file named @@innodb_buffer_pool_filename
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_BUFFER_POOL_DUMP_PCT
SESSION_VALUE NULL
GLOBAL_VALUE 100
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 100
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Dump only the hottest N% of each buffer pool, defaults to 100
NUMERIC_MIN_VALUE 1
NUMERIC_MAX_VALUE 100
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_BUFFER_POOL_EVICT
SESSION_VALUE NULL
GLOBAL_VALUE
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE VARCHAR
VARIABLE_COMMENT Evict pages from the buffer pool
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_BUFFER_POOL_FILENAME
SESSION_VALUE NULL
GLOBAL_VALUE ib_buffer_pool
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE ib_buffer_pool
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE VARCHAR
VARIABLE_COMMENT Filename to/from which to dump/load the InnoDB buffer pool
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_BUFFER_POOL_INSTANCES
SESSION_VALUE NULL
GLOBAL_VALUE 8
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 0
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT
VARIABLE_COMMENT Number of buffer pool instances, set to higher value on high-end machines to increase scalability
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 64
NUMERIC_BLOCK_SIZE 1
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_BUFFER_POOL_LOAD_ABORT
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Abort a currently running load of the buffer pool
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_BUFFER_POOL_LOAD_AT_STARTUP
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Load the buffer pool from a file named @@innodb_buffer_pool_filename
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_BUFFER_POOL_LOAD_NOW
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Trigger an immediate load of the buffer pool from a file named @@innodb_buffer_pool_filename
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_BUFFER_POOL_SIZE
SESSION_VALUE NULL
GLOBAL_VALUE 8388608
GLOBAL_VALUE_ORIGIN CONFIG
DEFAULT_VALUE 134217728
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT
VARIABLE_COMMENT The size of the memory buffer InnoDB uses to cache data and indexes of its tables.
NUMERIC_MIN_VALUE 5242880
NUMERIC_MAX_VALUE 9223372036854775807
NUMERIC_BLOCK_SIZE 1048576
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_BUF_DUMP_STATUS_FREQUENCY
SESSION_VALUE NULL
GLOBAL_VALUE 0
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 0
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT A number between [0, 100] that tells how oftern buffer pool dump status in percentages should be printed. E.g. 10 means that buffer pool dump status is printed when every 10% of number of buffer pool pages are dumped. Default is 0 (only start and end status is printed).
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 100
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_BUF_FLUSH_LIST_NOW
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Force dirty page flush now
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_CHANGE_BUFFERING
SESSION_VALUE NULL
GLOBAL_VALUE all
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE all
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE VARCHAR
VARIABLE_COMMENT Buffer changes to reduce random access: OFF, ON, inserting, deleting, changing, or purging.
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_CHANGE_BUFFERING_DEBUG
SESSION_VALUE NULL
GLOBAL_VALUE 0
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 0
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE INT UNSIGNED
VARIABLE_COMMENT Debug flags for InnoDB change buffering (0=none, 2=crash at merge)
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 2
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_CHANGE_BUFFER_MAX_SIZE
SESSION_VALUE NULL
GLOBAL_VALUE 25
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 25
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE INT UNSIGNED
VARIABLE_COMMENT Maximum on-disk size of change buffer in terms of percentage of the buffer pool.
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 50
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_CHECKSUMS
SESSION_VALUE NULL
GLOBAL_VALUE ON
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE ON
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT DEPRECATED. Use innodb_checksum_algorithm=NONE instead of setting this to OFF. Enable InnoDB checksums validation (enabled by default). Disable with --skip-innodb-checksums.
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT NONE
VARIABLE_NAME INNODB_CHECKSUM_ALGORITHM
SESSION_VALUE NULL
GLOBAL_VALUE INNODB
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE INNODB
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE ENUM
VARIABLE_COMMENT The algorithm InnoDB uses for page checksumming. Possible values are CRC32 (hardware accelerated if the CPU supports it) write crc32, allow any of the other checksums to match when reading; STRICT_CRC32 write crc32, do not allow other algorithms to match when reading; INNODB write a software calculated checksum, allow any other checksums to match when reading; STRICT_INNODB write a software calculated checksum, do not allow other algorithms to match when reading; NONE write a constant magic number, do not do any checksum verification when reading (same as innodb_checksums=OFF); STRICT_NONE write a constant magic number, do not allow values other than that magic number when reading; Files updated when this option is set to crc32 or strict_crc32 will not be readable by MySQL versions older than 5.6.3
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST CRC32,STRICT_CRC32,INNODB,STRICT_INNODB,NONE,STRICT_NONE
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_CMP_PER_INDEX_ENABLED
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Enable INFORMATION_SCHEMA.innodb_cmp_per_index, may have negative impact on performance (off by default)
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_COMMIT_CONCURRENCY
SESSION_VALUE NULL
GLOBAL_VALUE 0
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 0
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Helps in performance tuning in heavily concurrent environments.
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 1000
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_COMPRESSION_ALGORITHM
SESSION_VALUE NULL
GLOBAL_VALUE none
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE none
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE ENUM
VARIABLE_COMMENT Compression algorithm used on page compression. One of: none, zlib, lz4, lzo, lzma, or bzip2
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST none,zlib,lz4,lzo,lzma,bzip2,snappy
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_COMPRESSION_FAILURE_THRESHOLD_PCT
SESSION_VALUE NULL
GLOBAL_VALUE 5
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 5
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT If the compression failure rate of a table is greater than this number more padding is added to the pages to reduce the failures. A value of zero implies no padding
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 100
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_COMPRESSION_LEVEL
SESSION_VALUE NULL
GLOBAL_VALUE 6
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 6
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE INT UNSIGNED
VARIABLE_COMMENT Compression level used for zlib compression. 0 is no compression, 1 is fastest, 9 is best compression and default is 6.
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 9
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_COMPRESSION_PAD_PCT_MAX
SESSION_VALUE NULL
GLOBAL_VALUE 50
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 50
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Percentage of empty space on a data page that can be reserved to make the page compressible.
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 75
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_CONCURRENCY_TICKETS
SESSION_VALUE NULL
GLOBAL_VALUE 5000
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 5000
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Number of times a thread is allowed to enter InnoDB within the same SQL query after it has once got the ticket
NUMERIC_MIN_VALUE 1
NUMERIC_MAX_VALUE 18446744073709551615
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_DATA_FILE_PATH
SESSION_VALUE NULL
GLOBAL_VALUE ibdata1:12M:autoextend
GLOBAL_VALUE_ORIGIN CONFIG
DEFAULT_VALUE
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE VARCHAR
VARIABLE_COMMENT Path to individual files and their sizes.
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_DATA_HOME_DIR
SESSION_VALUE NULL
GLOBAL_VALUE
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE VARCHAR
VARIABLE_COMMENT The common part for InnoDB table spaces.
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_DEBUG_FORCE_SCRUBBING
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Perform extra scrubbing to increase test exposure
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_DEFAULT_ENCRYPTION_KEY_ID
SESSION_VALUE 1
GLOBAL_VALUE 1
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 1
VARIABLE_SCOPE SESSION
VARIABLE_TYPE INT UNSIGNED
VARIABLE_COMMENT Default encryption key id used for table encryption.
NUMERIC_MIN_VALUE 1
NUMERIC_MAX_VALUE 4294967295
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_DEFRAGMENT
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Enable/disable InnoDB defragmentation (default FALSE). When set to FALSE, all existing defragmentation will be paused. And new defragmentation command will fail.Paused defragmentation commands will resume when this variable is set to true again.
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_DEFRAGMENT_FILL_FACTOR
SESSION_VALUE NULL
GLOBAL_VALUE 0.900000
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 0.900000
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE DOUBLE
VARIABLE_COMMENT A number between [0.7, 1] that tells defragmentation how full it should fill a page. Default is 0.9. Number below 0.7 won't make much sense.This variable, together with innodb_defragment_fill_factor_n_recs, is introduced so defragmentation won't pack the page too full and cause page split on the next insert on every page. The variable indicating more defragmentation gain is the one effective.
NUMERIC_MIN_VALUE 0.7
NUMERIC_MAX_VALUE 1
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_DEFRAGMENT_FILL_FACTOR_N_RECS
SESSION_VALUE NULL
GLOBAL_VALUE 20
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 20
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE INT UNSIGNED
VARIABLE_COMMENT How many records of space defragmentation should leave on the page. This variable, together with innodb_defragment_fill_factor, is introduced so defragmentation won't pack the page too full and cause page split on the next insert on every page. The variable indicating more defragmentation gain is the one effective.
NUMERIC_MIN_VALUE 1
NUMERIC_MAX_VALUE 100
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_DEFRAGMENT_FREQUENCY
SESSION_VALUE NULL
GLOBAL_VALUE 40
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 40
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE INT UNSIGNED
VARIABLE_COMMENT Do not defragment a single index more than this number of time per second.This controls the number of time defragmentation thread can request X_LOCK on an index. Defragmentation thread will check whether 1/defragment_frequency (s) has passed since it worked on this index last time, and put the index back to the queue if not enough time has passed. The actual frequency can only be lower than this given number.
NUMERIC_MIN_VALUE 1
NUMERIC_MAX_VALUE 1000
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_DEFRAGMENT_N_PAGES
SESSION_VALUE NULL
GLOBAL_VALUE 7
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 7
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE INT UNSIGNED
VARIABLE_COMMENT Number of pages considered at once when merging multiple pages to defragment
NUMERIC_MIN_VALUE 2
NUMERIC_MAX_VALUE 32
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_DEFRAGMENT_STATS_ACCURACY
SESSION_VALUE NULL
GLOBAL_VALUE 0
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 0
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE INT UNSIGNED
VARIABLE_COMMENT How many defragment stats changes there are before the stats are written to persistent storage. Set to 0 meaning disable defragment stats tracking.
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 4294967295
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_DISABLE_BACKGROUND_MERGE
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Disable change buffering merges by the master thread
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT NONE
VARIABLE_NAME INNODB_DISABLE_SORT_FILE_CACHE
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Whether to disable OS system file cache for sort I/O
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_DOUBLEWRITE
SESSION_VALUE NULL
GLOBAL_VALUE ON
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE ON
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Enable InnoDB doublewrite buffer (enabled by default). Disable with --skip-innodb-doublewrite.
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT NONE
VARIABLE_NAME INNODB_DOUBLEWRITE_BATCH_SIZE
SESSION_VALUE NULL
GLOBAL_VALUE 120
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 120
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Number of pages reserved in doublewrite buffer for batch flushing
NUMERIC_MIN_VALUE 1
NUMERIC_MAX_VALUE 127
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_ENCRYPTION_ROTATE_KEY_AGE
SESSION_VALUE NULL
GLOBAL_VALUE 1
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 1
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE INT UNSIGNED
VARIABLE_COMMENT Key rotation - re-encrypt in background all pages that were encrypted with a key that many (or more) versions behind
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 4294967295
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_ENCRYPTION_ROTATION_IOPS
SESSION_VALUE NULL
GLOBAL_VALUE 100
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 100
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE INT UNSIGNED
VARIABLE_COMMENT Use this many iops for background key rotation
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 4294967295
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_ENCRYPTION_THREADS
SESSION_VALUE NULL
GLOBAL_VALUE 0
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 0
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE INT UNSIGNED
VARIABLE_COMMENT Number of threads performing background key rotation and scrubbing
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 4294967295
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_ENCRYPT_LOG
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Enable redo log encryption
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_ENCRYPT_TABLES
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE ENUM
VARIABLE_COMMENT Enable encryption for tables. Don't forget to enable --innodb-encrypt-log too
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST OFF,ON,FORCE
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_FAST_SHUTDOWN
SESSION_VALUE NULL
GLOBAL_VALUE 1
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 1
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Speeds up the shutdown process of the InnoDB storage engine. Possible values are 0, 1 (faster) or 2 (fastest - crash-like).
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 2
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_FATAL_SEMAPHORE_WAIT_THRESHOLD
SESSION_VALUE NULL
GLOBAL_VALUE 600
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 600
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Maximum number of seconds that semaphore times out in InnoDB.
NUMERIC_MIN_VALUE 1
NUMERIC_MAX_VALUE 4294967295
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_FILE_FORMAT
SESSION_VALUE NULL
GLOBAL_VALUE Antelope
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE Antelope
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE VARCHAR
VARIABLE_COMMENT File format to use for new tables in .ibd files.
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_FILE_FORMAT_CHECK
SESSION_VALUE NULL
GLOBAL_VALUE ON
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE ON
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Whether to perform system file format check.
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT NONE
VARIABLE_NAME INNODB_FILE_FORMAT_MAX
SESSION_VALUE NULL
GLOBAL_VALUE Antelope
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE Antelope
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE VARCHAR
VARIABLE_COMMENT The highest file format in the tablespace.
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_FILE_PER_TABLE
SESSION_VALUE NULL
GLOBAL_VALUE ON
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE ON
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Stores each InnoDB table to an .ibd file in the database dir.
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT NONE
VARIABLE_NAME INNODB_FIL_MAKE_PAGE_DIRTY_DEBUG
SESSION_VALUE NULL
GLOBAL_VALUE 0
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 0
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Make the first page of the given tablespace dirty.
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 4294967295
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_FLUSHING_AVG_LOOPS
SESSION_VALUE NULL
GLOBAL_VALUE 30
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 30
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Number of iterations over which the background flushing is averaged.
NUMERIC_MIN_VALUE 1
NUMERIC_MAX_VALUE 1000
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_FLUSH_LOG_AT_TIMEOUT
SESSION_VALUE NULL
GLOBAL_VALUE 3
GLOBAL_VALUE_ORIGIN CONFIG
DEFAULT_VALUE 1
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE INT UNSIGNED
VARIABLE_COMMENT Write and flush logs every (n) second.
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 2700
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_FLUSH_LOG_AT_TRX_COMMIT
SESSION_VALUE NULL
GLOBAL_VALUE 1
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 1
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Controls the durability/speed trade-off for commits. Set to 0 (write and flush redo log to disk only once per second), 1 (flush to disk at each commit), 2 (write to log at commit but flush to disk only once per second) or 3 (flush to disk at prepare and at commit, slower and usually redundant). 1 and 3 guarantees that after a crash, committed transactions will not be lost and will be consistent with the binlog and other transactional engines. 2 can get inconsistent and lose transactions if there is a power failure or kernel crash but not if mysqld crashes. 0 has no guarantees in case of crash. 0 and 2 can be faster than 1 or 3.
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 3
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_FLUSH_METHOD
SESSION_VALUE NULL
GLOBAL_VALUE
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE VARCHAR
VARIABLE_COMMENT With which method to flush data.
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_FLUSH_NEIGHBORS
SESSION_VALUE NULL
GLOBAL_VALUE 1
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 1
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Set to 0 (don't flush neighbors from buffer pool), 1 (flush contiguous neighbors from buffer pool) or 2 (flush neighbors from buffer pool), when flushing a block
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 2
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_FORCE_LOAD_CORRUPTED
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Force InnoDB to load metadata of corrupted table.
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT NONE
VARIABLE_NAME INNODB_FORCE_PRIMARY_KEY
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Do not allow to create table without primary key (off by default)
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_FORCE_RECOVERY
SESSION_VALUE NULL
GLOBAL_VALUE 0
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 0
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Helps to save your data in case the disk image of the database becomes corrupt.
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 6
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_FORCE_RECOVERY_CRASH
SESSION_VALUE NULL
GLOBAL_VALUE 0
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 0
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Kills the server during crash recovery.
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 10
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_FT_AUX_TABLE
SESSION_VALUE NULL
GLOBAL_VALUE
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE VARCHAR
VARIABLE_COMMENT FTS internal auxiliary table to be checked
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT NONE
VARIABLE_NAME INNODB_FT_CACHE_SIZE
SESSION_VALUE NULL
GLOBAL_VALUE 8000000
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 8000000
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT InnoDB Fulltext search cache size in bytes
NUMERIC_MIN_VALUE 1600000
NUMERIC_MAX_VALUE 80000000
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_FT_ENABLE_DIAG_PRINT
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Whether to enable additional FTS diagnostic printout
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_FT_ENABLE_STOPWORD
SESSION_VALUE ON
GLOBAL_VALUE ON
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE ON
VARIABLE_SCOPE SESSION
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Create FTS index with stopword.
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_FT_MAX_TOKEN_SIZE
SESSION_VALUE NULL
GLOBAL_VALUE 84
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 84
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT InnoDB Fulltext search maximum token size in characters
NUMERIC_MIN_VALUE 10
NUMERIC_MAX_VALUE 84
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_FT_MIN_TOKEN_SIZE
SESSION_VALUE NULL
GLOBAL_VALUE 3
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 3
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT InnoDB Fulltext search minimum token size in characters
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 16
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_FT_NUM_WORD_OPTIMIZE
SESSION_VALUE NULL
GLOBAL_VALUE 2000
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 2000
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT InnoDB Fulltext search number of words to optimize for each optimize table call
NUMERIC_MIN_VALUE 1000
NUMERIC_MAX_VALUE 10000
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_FT_RESULT_CACHE_LIMIT
SESSION_VALUE NULL
GLOBAL_VALUE 2000000000
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 2000000000
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT InnoDB Fulltext search query result cache limit in bytes
NUMERIC_MIN_VALUE 1000000
NUMERIC_MAX_VALUE 4294967295
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_FT_SERVER_STOPWORD_TABLE
SESSION_VALUE NULL
GLOBAL_VALUE
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE VARCHAR
VARIABLE_COMMENT The user supplied stopword table name.
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_FT_SORT_PLL_DEGREE
SESSION_VALUE NULL
GLOBAL_VALUE 2
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 2
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT InnoDB Fulltext search parallel sort degree, will round up to nearest power of 2 number
NUMERIC_MIN_VALUE 1
NUMERIC_MAX_VALUE 16
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_FT_TOTAL_CACHE_SIZE
SESSION_VALUE NULL
GLOBAL_VALUE 640000000
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 640000000
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Total memory allocated for InnoDB Fulltext Search cache
NUMERIC_MIN_VALUE 32000000
NUMERIC_MAX_VALUE 1600000000
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_FT_USER_STOPWORD_TABLE
SESSION_VALUE
GLOBAL_VALUE
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE
VARIABLE_SCOPE SESSION
VARIABLE_TYPE VARCHAR
VARIABLE_COMMENT User supplied stopword table name, effective in the session level.
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_IDLE_FLUSH_PCT
SESSION_VALUE NULL
GLOBAL_VALUE 100
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 100
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Up to what percentage of dirty pages should be flushed when innodb finds it has spare resources to do so.
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 100
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_IMMEDIATE_SCRUB_DATA_UNCOMPRESSED
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Enable scrubbing of data
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_INSTRUMENT_SEMAPHORES
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Enable semaphore request instrumentation. This could have some effect on performance but allows better information on long semaphore wait problems. (Default: not enabled)
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_IO_CAPACITY
SESSION_VALUE NULL
GLOBAL_VALUE 200
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 200
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Number of IOPs the server can do. Tunes the background IO rate
NUMERIC_MIN_VALUE 100
NUMERIC_MAX_VALUE 18446744073709551615
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_IO_CAPACITY_MAX
SESSION_VALUE NULL
GLOBAL_VALUE 2000
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 18446744073709551615
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Limit to which innodb_io_capacity can be inflated.
NUMERIC_MIN_VALUE 100
NUMERIC_MAX_VALUE 18446744073709551615
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_LARGE_PREFIX
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Support large index prefix length of REC_VERSION_56_MAX_INDEX_COL_LEN (3072) bytes.
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT NONE
VARIABLE_NAME INNODB_LIMIT_OPTIMISTIC_INSERT_DEBUG
SESSION_VALUE NULL
GLOBAL_VALUE 0
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 0
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE INT UNSIGNED
VARIABLE_COMMENT Artificially limit the number of records per B-tree page (0=unlimited).
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 4294967295
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_LOCKS_UNSAFE_FOR_BINLOG
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT DEPRECATED. This option may be removed in future releases. Please use READ COMMITTED transaction isolation level instead. Force InnoDB to not use next-key locking, to use only row-level locking.
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT NONE
VARIABLE_NAME INNODB_LOCK_WAIT_TIMEOUT
SESSION_VALUE 50
GLOBAL_VALUE 50
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 50
VARIABLE_SCOPE SESSION
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Timeout in seconds an InnoDB transaction may wait for a lock before being rolled back. Values above 100000000 disable the timeout.
NUMERIC_MIN_VALUE 1
NUMERIC_MAX_VALUE 1073741824
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_LOG_BUFFER_SIZE
SESSION_VALUE NULL
GLOBAL_VALUE 1048576
GLOBAL_VALUE_ORIGIN CONFIG
DEFAULT_VALUE 16777216
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT
VARIABLE_COMMENT The size of the buffer which InnoDB uses to write log to the log files on disk.
NUMERIC_MIN_VALUE 262144
NUMERIC_MAX_VALUE 9223372036854775807
NUMERIC_BLOCK_SIZE 1024
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_LOG_CHECKPOINT_NOW
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Force checkpoint now
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_LOG_COMPRESSED_PAGES
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Enables/disables the logging of entire compressed page images. InnoDB logs the compressed pages to prevent corruption if the zlib compression algorithm changes. When turned OFF, InnoDB will assume that the zlib compression algorithm doesn't change.
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_LOG_FILES_IN_GROUP
SESSION_VALUE NULL
GLOBAL_VALUE 2
GLOBAL_VALUE_ORIGIN CONFIG
DEFAULT_VALUE 2
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Number of log files in the log group. InnoDB writes to the files in a circular fashion.
NUMERIC_MIN_VALUE 2
NUMERIC_MAX_VALUE 100
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_LOG_FILE_SIZE
SESSION_VALUE NULL
GLOBAL_VALUE 5242880
GLOBAL_VALUE_ORIGIN CONFIG
DEFAULT_VALUE 50331648
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT
VARIABLE_COMMENT Size of each log file in a log group.
NUMERIC_MIN_VALUE 1048576
NUMERIC_MAX_VALUE 9223372036854775807
NUMERIC_BLOCK_SIZE 1048576
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_LOG_GROUP_HOME_DIR
SESSION_VALUE NULL
GLOBAL_VALUE PATH
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE VARCHAR
VARIABLE_COMMENT Path to InnoDB log files.
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_LRU_SCAN_DEPTH
SESSION_VALUE NULL
GLOBAL_VALUE 100
GLOBAL_VALUE_ORIGIN CONFIG
DEFAULT_VALUE 1024
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT How deep to scan LRU to keep it clean
NUMERIC_MIN_VALUE 100
NUMERIC_MAX_VALUE 18446744073709551615
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_MAX_DIRTY_PAGES_PCT
SESSION_VALUE NULL
GLOBAL_VALUE 75.000000
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 75.000000
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE DOUBLE
VARIABLE_COMMENT Percentage of dirty pages allowed in bufferpool.
NUMERIC_MIN_VALUE 0.001
NUMERIC_MAX_VALUE 99.999
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_MAX_DIRTY_PAGES_PCT_LWM
SESSION_VALUE NULL
GLOBAL_VALUE 0.001000
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 0.001000
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE DOUBLE
VARIABLE_COMMENT Percentage of dirty pages at which flushing kicks in.
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 99.999
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_MAX_PURGE_LAG
SESSION_VALUE NULL
GLOBAL_VALUE 0
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 0
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Desired maximum length of the purge queue (0 = no limit)
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 18446744073709551615
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_MAX_PURGE_LAG_DELAY
SESSION_VALUE NULL
GLOBAL_VALUE 0
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 0
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Maximum delay of user threads in micro-seconds
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 10000000
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_MIRRORED_LOG_GROUPS
SESSION_VALUE NULL
GLOBAL_VALUE 1
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 0
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT
VARIABLE_COMMENT Number of identical copies of log groups we keep for the database. Currently this should be set to 1.
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 10
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_MONITOR_DISABLE
SESSION_VALUE NULL
GLOBAL_VALUE
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE VARCHAR
VARIABLE_COMMENT Turn off a monitor counter
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_MONITOR_ENABLE
SESSION_VALUE NULL
GLOBAL_VALUE
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE VARCHAR
VARIABLE_COMMENT Turn on a monitor counter
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_MONITOR_RESET
SESSION_VALUE NULL
GLOBAL_VALUE
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE VARCHAR
VARIABLE_COMMENT Reset a monitor counter
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_MONITOR_RESET_ALL
SESSION_VALUE NULL
GLOBAL_VALUE
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE VARCHAR
VARIABLE_COMMENT Reset all values for a monitor counter
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_MTFLUSH_THREADS
SESSION_VALUE NULL
GLOBAL_VALUE 8
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 8
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT
VARIABLE_COMMENT Number of multi-threaded flush threads
NUMERIC_MIN_VALUE 1
NUMERIC_MAX_VALUE 64
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_OLD_BLOCKS_PCT
SESSION_VALUE NULL
GLOBAL_VALUE 37
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 37
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE INT UNSIGNED
VARIABLE_COMMENT Percentage of the buffer pool to reserve for 'old' blocks.
NUMERIC_MIN_VALUE 5
NUMERIC_MAX_VALUE 95
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_OLD_BLOCKS_TIME
SESSION_VALUE NULL
GLOBAL_VALUE 1000
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 1000
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE INT UNSIGNED
VARIABLE_COMMENT Move blocks to the 'new' end of the buffer pool if the first access was at least this many milliseconds ago. The timeout is disabled if 0.
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 4294967295
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_ONLINE_ALTER_LOG_MAX_SIZE
SESSION_VALUE NULL
GLOBAL_VALUE 134217728
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 134217728
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Maximum modification log file size for online index creation
NUMERIC_MIN_VALUE 65536
NUMERIC_MAX_VALUE 18446744073709551615
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_OPEN_FILES
SESSION_VALUE NULL
GLOBAL_VALUE 2000
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 0
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT
VARIABLE_COMMENT How many files at the maximum InnoDB keeps open at the same time.
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 9223372036854775807
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_OPTIMIZE_FULLTEXT_ONLY
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Only optimize the Fulltext index of the table
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT NONE
VARIABLE_NAME INNODB_PAGE_HASH_LOCKS
SESSION_VALUE NULL
GLOBAL_VALUE 16
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 16
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Number of rw_locks protecting buffer pool page_hash. Rounded up to the next power of 2
NUMERIC_MIN_VALUE 1
NUMERIC_MAX_VALUE 1024
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_PAGE_SIZE
SESSION_VALUE NULL
GLOBAL_VALUE 16384
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 16384
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Page size to use for all InnoDB tablespaces.
NUMERIC_MIN_VALUE 4096
NUMERIC_MAX_VALUE 65536
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_PREFIX_INDEX_CLUSTER_OPTIMIZATION
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Enable prefix optimization to sometimes avoid cluster index lookups.
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_PRINT_ALL_DEADLOCKS
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Print all deadlocks to MySQL error log (off by default)
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_PURGE_BATCH_SIZE
SESSION_VALUE NULL
GLOBAL_VALUE 300
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 300
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Number of UNDO log pages to purge in one batch from the history list.
NUMERIC_MIN_VALUE 1
NUMERIC_MAX_VALUE 5000
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_PURGE_RUN_NOW
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Set purge state to RUN
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_PURGE_STOP_NOW
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Set purge state to STOP
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_PURGE_THREADS
SESSION_VALUE NULL
GLOBAL_VALUE 1
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 1
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Purge threads can be from 1 to 32. Default is 1.
NUMERIC_MIN_VALUE 1
NUMERIC_MAX_VALUE 32
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_RANDOM_READ_AHEAD
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Whether to use read ahead for random access within an extent.
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT NONE
VARIABLE_NAME INNODB_READ_AHEAD_THRESHOLD
SESSION_VALUE NULL
GLOBAL_VALUE 56
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 56
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Number of pages that must be accessed sequentially for InnoDB to trigger a readahead.
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 64
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_READ_IO_THREADS
SESSION_VALUE NULL
GLOBAL_VALUE 2
GLOBAL_VALUE_ORIGIN CONFIG
DEFAULT_VALUE 4
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Number of background read I/O threads in InnoDB.
NUMERIC_MIN_VALUE 1
NUMERIC_MAX_VALUE 64
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_READ_ONLY
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Start InnoDB in read only mode (off by default)
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_REPLICATION_DELAY
SESSION_VALUE NULL
GLOBAL_VALUE 0
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 0
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Replication thread delay (ms) on the slave server if innodb_thread_concurrency is reached (0 by default)
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 18446744073709551615
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_ROLLBACK_ON_TIMEOUT
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Roll back the complete transaction on lock wait timeout, for 4.x compatibility (disabled by default)
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_ROLLBACK_SEGMENTS
SESSION_VALUE NULL
GLOBAL_VALUE 128
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 128
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Number of undo logs to use (deprecated).
NUMERIC_MIN_VALUE 1
NUMERIC_MAX_VALUE 128
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_SAVED_PAGE_NUMBER_DEBUG
SESSION_VALUE NULL
GLOBAL_VALUE 0
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 0
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT An InnoDB page number.
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 4294967295
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_SCRUB_LOG
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Enable background redo log (ib_logfile0, ib_logfile1...) scrubbing
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_SCRUB_LOG_SPEED
SESSION_VALUE NULL
GLOBAL_VALUE 256
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 256
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Background redo log scrubbing speed in bytes/sec
NUMERIC_MIN_VALUE 1
NUMERIC_MAX_VALUE 50000
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_SIMULATE_COMP_FAILURES
SESSION_VALUE NULL
GLOBAL_VALUE 0
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 0
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE INT UNSIGNED
VARIABLE_COMMENT Simulate compression failures.
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 99
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT NONE
VARIABLE_NAME INNODB_SORT_BUFFER_SIZE
SESSION_VALUE NULL
GLOBAL_VALUE 1048576
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 1048576
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Memory buffer size for index creation
NUMERIC_MIN_VALUE 65536
NUMERIC_MAX_VALUE 67108864
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_SPIN_WAIT_DELAY
SESSION_VALUE NULL
GLOBAL_VALUE 6
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 6
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Maximum delay between polling for a spin lock (6 by default)
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 18446744073709551615
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_STATS_AUTO_RECALC
SESSION_VALUE NULL
GLOBAL_VALUE ON
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE ON
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT InnoDB automatic recalculation of persistent statistics enabled for all tables unless overridden at table level (automatic recalculation is only done when InnoDB decides that the table has changed too much and needs a new statistics)
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_STATS_METHOD
SESSION_VALUE NULL
GLOBAL_VALUE nulls_equal
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE nulls_equal
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE ENUM
VARIABLE_COMMENT Specifies how InnoDB index statistics collection code should treat NULLs. Possible values are NULLS_EQUAL (default), NULLS_UNEQUAL and NULLS_IGNORED
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST nulls_equal,nulls_unequal,nulls_ignored
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_STATS_MODIFIED_COUNTER
SESSION_VALUE NULL
GLOBAL_VALUE 0
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 0
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT The number of rows modified before we calculate new statistics (default 0 = current limits)
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 18446744073709551615
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_STATS_ON_METADATA
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Enable statistics gathering for metadata commands such as SHOW TABLE STATUS for tables that use transient statistics (off by default)
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_STATS_PERSISTENT
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN CONFIG
DEFAULT_VALUE ON
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT InnoDB persistent statistics enabled for all tables unless overridden at table level
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_STATS_PERSISTENT_SAMPLE_PAGES
SESSION_VALUE NULL
GLOBAL_VALUE 20
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 20
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT The number of leaf index pages to sample when calculating persistent statistics (by ANALYZE, default 20)
NUMERIC_MIN_VALUE 1
NUMERIC_MAX_VALUE 18446744073709551615
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_STATS_SAMPLE_PAGES
SESSION_VALUE NULL
GLOBAL_VALUE 8
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 8
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Deprecated, use innodb_stats_transient_sample_pages instead
NUMERIC_MIN_VALUE 1
NUMERIC_MAX_VALUE 18446744073709551615
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_STATS_TRADITIONAL
SESSION_VALUE NULL
GLOBAL_VALUE ON
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE ON
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Enable traditional statistic calculation based on number of configured pages (default true)
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_STATS_TRANSIENT_SAMPLE_PAGES
SESSION_VALUE NULL
GLOBAL_VALUE 8
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 8
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT The number of leaf index pages to sample when calculating transient statistics (if persistent statistics are not used, default 8)
NUMERIC_MIN_VALUE 1
NUMERIC_MAX_VALUE 18446744073709551615
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_STATUS_OUTPUT
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Enable InnoDB monitor output to the error log.
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_STATUS_OUTPUT_LOCKS
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Enable InnoDB lock monitor output to the error log. Requires innodb_status_output=ON.
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_STRICT_MODE
SESSION_VALUE OFF
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE SESSION
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Use strict mode when evaluating create options.
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_SUPPORT_XA
SESSION_VALUE ON
GLOBAL_VALUE ON
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE ON
VARIABLE_SCOPE SESSION
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Enable InnoDB support for the XA two-phase commit
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_SYNC_ARRAY_SIZE
SESSION_VALUE NULL
GLOBAL_VALUE 1
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 1
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Size of the mutex/lock wait array.
NUMERIC_MIN_VALUE 1
NUMERIC_MAX_VALUE 1024
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_SYNC_SPIN_LOOPS
SESSION_VALUE NULL
GLOBAL_VALUE 30
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 30
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Count of spin-loop rounds in InnoDB mutexes (30 by default)
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 18446744073709551615
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_TABLE_LOCKS
SESSION_VALUE ON
GLOBAL_VALUE ON
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE ON
VARIABLE_SCOPE SESSION
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Enable InnoDB locking in LOCK TABLES
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_THREAD_CONCURRENCY
SESSION_VALUE NULL
GLOBAL_VALUE 0
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 0
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Helps in performance tuning in heavily concurrent environments. Sets the maximum number of threads allowed inside InnoDB. Value 0 will disable the thread throttling.
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 1000
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_THREAD_SLEEP_DELAY
SESSION_VALUE NULL
GLOBAL_VALUE 10000
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 10000
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Time of innodb thread sleeping before joining InnoDB queue (usec). Value 0 disable a sleep
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 1000000
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_TMPDIR
SESSION_VALUE
GLOBAL_VALUE
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE
VARIABLE_SCOPE SESSION
VARIABLE_TYPE VARCHAR
VARIABLE_COMMENT Directory for temporary non-tablespace files.
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_TRX_PURGE_VIEW_UPDATE_ONLY_DEBUG
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Pause actual purging any delete-marked records, but merely update the purge view. It is to create artificially the situation the purge view have been updated but the each purges were not done yet.
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT NULL
VARIABLE_NAME INNODB_TRX_RSEG_N_SLOTS_DEBUG
SESSION_VALUE NULL
GLOBAL_VALUE 0
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 0
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE INT UNSIGNED
VARIABLE_COMMENT Debug flags for InnoDB to limit TRX_RSEG_N_SLOTS for trx_rsegf_undo_find_free()
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 1024
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT NULL
VARIABLE_NAME INNODB_UNDO_DIRECTORY
SESSION_VALUE NULL
GLOBAL_VALUE .
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE .
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE VARCHAR
VARIABLE_COMMENT Directory where undo tablespace files live, this path can be absolute.
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_UNDO_LOGS
SESSION_VALUE NULL
GLOBAL_VALUE 128
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 128
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Number of undo logs to use.
NUMERIC_MIN_VALUE 1
NUMERIC_MAX_VALUE 128
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_UNDO_TABLESPACES
SESSION_VALUE NULL
GLOBAL_VALUE 0
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 0
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Number of undo tablespaces to use.
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 126
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT REQUIRED
VARIABLE_NAME INNODB_USE_ATOMIC_WRITES
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Prevent partial page writes, via atomic writes.The option is used to prevent partial writes in case of a crash/poweroff, as faster alternative to doublewrite buffer.Currently this option works only on Linux only with FusionIO device, and directFS filesystem.
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT NONE
VARIABLE_NAME INNODB_USE_FALLOCATE
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Preallocate files fast, using operating system functionality. On POSIX systems, posix_fallocate system call is used.
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT NONE
VARIABLE_NAME INNODB_USE_MTFLUSH
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Use multi-threaded flush. Default FALSE.
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT NONE
VARIABLE_NAME INNODB_USE_SYS_MALLOC
SESSION_VALUE NULL
GLOBAL_VALUE ON
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE ON
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT DEPRECATED. This option may be removed in future releases, together with the InnoDB's internal memory allocator. Use OS memory allocator instead of InnoDB's internal memory allocator
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT NONE
VARIABLE_NAME INNODB_USE_TRIM
SESSION_VALUE NULL
GLOBAL_VALUE OFF
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Use trim. Default FALSE.
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_VERSION
SESSION_VALUE NULL
GLOBAL_VALUE 5.6.31
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE NULL
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE VARCHAR
VARIABLE_COMMENT InnoDB version
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT NULL
VARIABLE_NAME INNODB_WRITE_IO_THREADS
SESSION_VALUE NULL
GLOBAL_VALUE 2
GLOBAL_VALUE_ORIGIN CONFIG
DEFAULT_VALUE 4
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BIGINT UNSIGNED
VARIABLE_COMMENT Number of background write I/O threads in InnoDB.
NUMERIC_MIN_VALUE 1
NUMERIC_MAX_VALUE 64
NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY YES
COMMAND_LINE_ARGUMENT REQUIRED
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