mariadb/bdb/docs/api_c/env_set_lg_dir.html
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<title>Berkeley DB: DBENV-&gt;set_lg_dir</title>
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<h1>DBENV-&gt;set_lg_dir</h1>
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<h3><pre>
#include &lt;db.h&gt;
<p>
int
DBENV-&gt;set_lg_dir(DB_ENV *dbenv, const char *dir);
</pre></h3>
<h1>Description</h1>
<p>The path of a directory to be used as the location of logging files.
Log files created by the Log Manager subsystem will be created in this
directory.
<p>If no logging directory is specified, log files are created in the
environment home directory. See <a href="../ref/env/naming.html">Berkeley DB File Naming</a> for more information.
<p>For the greatest degree of recoverability from system or application
failure, database files and log files should be located on separate
physical devices.
<p>The DBENV-&gt;set_lg_dir interface may only be used to configure Berkeley DB before
the <a href="../api_c/env_open.html">DBENV-&gt;open</a> interface is called.
<p>The DBENV-&gt;set_lg_dir function returns a non-zero error value on failure and 0 on success.
<p>The database environment's logging directory may also be set using the environment's
<b>DB_CONFIG</b> file. The syntax of the entry in that file is a
single line with the string "set_lg_dir", one or more whitespace characters,
and the directory name. Because the <b>DB_CONFIG</b> file is read when the database
environment is opened, it will silently overrule configuration done
before that time.
<h1>Errors</h1>
<p><dl compact>
<p><dt>EINVAL<dd>An invalid flag value or parameter was specified.
<p>Called after <a href="../api_c/env_open.html">DBENV-&gt;open</a> was called.
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<h1>See Also</h1>
<a href="../api_c/env_close.html">DBENV-&gt;close</a>,
<a href="../api_c/env_create.html">db_env_create</a>,
<a href="../api_c/env_open.html">DBENV-&gt;open</a>,
<a href="../api_c/env_remove.html">DBENV-&gt;remove</a>,
<a href="../api_c/db_err.html">DBENV-&gt;err</a>,
<a href="../api_c/env_strerror.html">db_strerror</a>,
<a href="../api_c/env_version.html">db_version</a>,
<a href="../api_c/env_set_cachesize.html">DBENV-&gt;set_cachesize</a>,
<a href="../api_c/env_set_errcall.html">DBENV-&gt;set_errcall</a>,
<a href="../api_c/env_set_errfile.html">DBENV-&gt;set_errfile</a>,
<a href="../api_c/env_set_errpfx.html">DBENV-&gt;set_errpfx</a>,
<a href="../api_c/env_set_flags.html">DBENV-&gt;set_flags</a>,
<a href="../api_c/env_set_mutexlocks.html">DBENV-&gt;set_mutexlocks</a>,
<a href="../api_c/env_set_paniccall.html">DBENV-&gt;set_paniccall</a>,
and
<a href="../api_c/env_set_verbose.html">DBENV-&gt;set_verbose</a>.
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