<!--$Id: env_set_lg_max.so,v 10.25 2001/10/22 15:24:29 bostic Exp $--> <!--Copyright 1997-2001 by Sleepycat Software, Inc.--> <!--All rights reserved.--> <html> <head> <title>Berkeley DB: DbEnv.set_lg_max</title> <meta name="description" content="Berkeley DB: An embedded database programmatic toolkit."> <meta name="keywords" content="embedded,database,programmatic,toolkit,b+tree,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,java,C,C++"> </head> <body bgcolor=white> <a name="2"><!--meow--></a> <table width="100%"><tr valign=top> <td> <h1>DbEnv.set_lg_max</h1> </td> <td align=right> <a href="../../db4-devel-4.0.14/api_java/c_index.html"><img src="../../db4-4.0.14/images/api.gif" alt="API"></a><a href="../reftoc.html"><img src="../../db4-4.0.14/images/ref.gif" alt="Ref"></a> </td></tr></table> <hr size=1 noshade> <tt> <h3><pre> import com.sleepycat.db.*; <p> public void set_lg_max(int lg_max) throws DbException; </pre></h3> <h1>Description</h1> <p>Set the maximum size of a single file in the log, in bytes. Because <a href="../../db4-devel-4.0.14/api_java/lsn_class.html">DbLsn</a> file offsets are unsigned four-byte values, the set value may not be larger than the maximum unsigned four-byte value. By default, or if the value is set to 0, a size of 10MB is used. The size of the log file must be at least four times the size of the in-memory log buffer (see <a href="../../db4-devel-4.0.14/api_java/env_set_lg_bsize.html">DbEnv.set_lg_bsize</a>). <p>See <a href="../../db4-devel-4.0.14/ref/log/limits.html">Log File Limits</a> for more information. <p>The DbEnv.set_lg_max interface may be used only to configure Berkeley DB before the <a href="../../db4-devel-4.0.14/api_java/env_open.html">DbEnv.open</a> interface is called. <p>The DbEnv.set_lg_max method throws an exception that encapsulates a non-zero error value on failure. <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>The DbEnv.set_lg_max method may fail and throw an exception encapsulating 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="../../db4-devel-4.0.14/api_java/env_open.html">DbEnv.open</a> was called. <p>The size of the log file is less than four times the size of the in-memory log buffer. <p>The specified log file size was too large. </dl> <p>The DbEnv.set_lg_max method may fail and throw an exception for errors specified for other Berkeley DB and C library or system methods. If a catastrophic error has occurred, the DbEnv.set_lg_max method may fail and throw a <a href="../../db4-devel-4.0.14/api_java/runrec_class.html">DbRunRecoveryException</a>, in which case all subsequent Berkeley DB calls will fail in the same way. <h1>Class</h1> <a href="../../db4-devel-4.0.14/api_java/dbenv_class.html">DbEnv</a> <h1>See Also</h1> <a href="../../db4-devel-4.0.14/api_java/env_set_lg_bsize.html">DbEnv.set_lg_bsize</a>, <a href="../../db4-devel-4.0.14/api_java/env_set_lg_dir.html">DbEnv.set_lg_dir</a>, <a href="../../db4-devel-4.0.14/api_java/env_set_lg_max.html">DbEnv.set_lg_max</a>, <a href="../../db4-devel-4.0.14/api_java/env_set_lg_regionmax.html">DbEnv.set_lg_regionmax</a>, <a href="../../db4-devel-4.0.14/api_java/log_archive.html">DbEnv.log_archive</a>, <a href="../../db4-devel-4.0.14/api_java/log_compare.html">DbEnv.log_compare</a>, <a href="../../db4-devel-4.0.14/api_java/log_cursor.html">DbEnv.log_cursor</a>, <a href="../../db4-devel-4.0.14/api_java/log_file.html">DbEnv.log_file</a>, <a href="../../db4-devel-4.0.14/api_java/log_flush.html">DbEnv.log_flush</a>, <a href="../../db4-devel-4.0.14/api_java/log_put.html">DbEnv.log_put</a>, <a href="../../db4-devel-4.0.14/api_java/log_register.html">DbEnv.log_register</a>, <a href="../../db4-devel-4.0.14/api_java/log_stat.html">DbEnv.log_stat</a>, <a href="../../db4-devel-4.0.14/api_java/log_unregister.html">DbEnv.log_unregister</a>, <a href="../../db4-devel-4.0.14/api_java/logc_close.html">DbLogc.logc_close</a> and <a href="../../db4-devel-4.0.14/api_java/logc_get.html">DbLogc.logc_get</a>. </tt> <table width="100%"><tr><td><br></td><td align=right> <a href="../../db4-devel-4.0.14/api_java/c_index.html"><img src="../../db4-4.0.14/images/api.gif" alt="API"></a><a href="../reftoc.html"><img src="../../db4-4.0.14/images/ref.gif" alt="Ref"></a> </td></tr></table> <p><font size=1><a href="http://www.sleepycat.com">Copyright Sleepycat Software</a></font> </body> </html>