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<!--$Id: env_set_lg_max.so,v 10.20 2000/05/20 16:29:12 bostic Exp $-->
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<title>Berkeley DB: DBENV->set_lg_max</title>
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<h1>DBENV->set_lg_max</h1>
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<h3><pre>
#include <db.h>
<p>
int
DBENV->set_lg_max(DB_ENV *dbenv, u_int32_t lg_max);
</pre></h3>
<h1>Description</h1>
<p>Set the maximum size of a single file in the log, in bytes. Because
<a href="../api_c/db_lsn.html">DB_LSN</a> file offsets are unsigned 4-byte values, the set value may
not be larger than the maximum unsigned 4-byte value. By default, or if
the value is set to 0, a size of 10MB is used.
<p>See <a href="../ref/log/limits.html">Log File Limits</a>
for more information.
<p>The DBENV->set_lg_max interface may only be used to configure Berkeley DB before
the <a href="../api_c/env_open.html">DBENV->open</a> interface is called.
<p>The DBENV->set_lg_max function returns a non-zero error value on failure and 0 on success.
<p>The database environment's log file size 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_max", one or more whitespace characters,
and the size in bytes. 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->open</a> was called.
<p>The specified log file size was too large.
</dl>
<h1>See Also</h1>
<a href="../api_c/env_set_lg_bsize.html">DBENV->set_lg_bsize</a>,
<a href="../api_c/env_set_lg_max.html">DBENV->set_lg_max</a>,
<a href="../api_c/log_archive.html">log_archive</a>,
<a href="../api_c/log_compare.html">log_compare</a>,
<a href="../api_c/log_file.html">log_file</a>,
<a href="../api_c/log_flush.html">log_flush</a>,
<a href="../api_c/log_get.html">log_get</a>,
<a href="../api_c/log_put.html">log_put</a>,
<a href="../api_c/log_register.html">log_register</a>,
<a href="../api_c/log_stat.html">log_stat</a>
and
<a href="../api_c/log_unregister.html">log_unregister</a>.
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