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<h1>DB_ENV->set_lg_regionmax</h1>
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<h3><pre>
#include <db.h>
<p>
int
DB_ENV->set_lg_regionmax(DB_ENV *dbenv, u_int32_t lg_regionmax);
</pre></h3>
<h1>Description</h1>
<p>Set the size of the underlying logging subsystem region, in bytes. By
default, or if the value is set to 0, the base region size is 60KB.
The log region is used to store filenames, and so may need to be
increased in size if a large number of files will be opened and
registered with the specified Berkeley DB environment's log manager.
<p>The DB_ENV->set_lg_regionmax method configures a database environment, not only operations
performed using the specified <a href="../api_c/env_class.html">DB_ENV</a> handle.
<p>The DB_ENV->set_lg_regionmax interface may not be called after the <a href="../api_c/env_open.html">DB_ENV->open</a>
interface is called.
If the database environment already exists when
<a href="../api_c/env_open.html">DB_ENV->open</a> is called, the information specified to DB_ENV->set_lg_regionmax
will be ignored.
<p>The DB_ENV->set_lg_regionmax method returns a non-zero error value on failure and 0 on success.
<p>The database environment's log region 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_regionmax", 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>The DB_ENV->set_lg_regionmax method may fail and return a non-zero error for the following conditions:
<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">DB_ENV->open</a> was called.
</dl>
<p>The DB_ENV->set_lg_regionmax method may fail and return a non-zero error for errors specified for other Berkeley DB and C library or system functions.
If a catastrophic error has occurred, the DB_ENV->set_lg_regionmax method may fail and
return <a href="../ref/program/errorret.html#DB_RUNRECOVERY">DB_RUNRECOVERY</a>,
in which case all subsequent Berkeley DB calls will fail in the same way.
<h1>Class</h1>
<a href="../api_c/env_class.html">DB_ENV</a>, <a href="../api_c/logc_class.html">DB_LOGC</a>, <a href="../api_c/lsn_class.html">DB_LSN</a>
<h1>See Also</h1>
<a href="../api_c/log_list.html">Logging Subsystem and Related Methods</a>
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