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<!--$Id: set_flags.so,v 1.1 2000/10/03 17:17:36 bostic Exp $-->
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<!--Copyright 1997, 1998, 1999, 2000 by Sleepycat Software, Inc.-->
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<html>
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<head>
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<title>Berkeley DB Reference Guide: Release 3.2: DBENV->set_flags</title>
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<meta name="description" content="Berkeley DB: An embedded database programmatic toolkit.">
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<meta name="keywords" content="embedded,database,programmatic,toolkit,b+tree,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,java,C,C++">
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</head>
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<body bgcolor=white>
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<table><tr valign=top>
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<td><h3><dl><dt>Berkeley DB Reference Guide:<dd>Upgrading Berkeley DB Applications</dl></h3></td>
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<td width="1%"><a href="../../ref/upgrade.3.2/intro.html"><img src="../../images/prev.gif" alt="Prev"></a><a href="../../ref/toc.html"><img src="../../images/ref.gif" alt="Ref"></a><a href="../../ref/upgrade.3.2/callback.html"><img src="../../images/next.gif" alt="Next"></a>
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</td></tr></table>
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<p>
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<h1 align=center>Release 3.2: DBENV->set_flags</h1>
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<p>A new method has been added to the Berkeley DB environment handle,
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<a href="../../api_c/env_set_flags.html">DBENV->set_flags</a>. This interface currently takes three flags:
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<a href="../../api_c/env_set_flags.html#DB_CDB_ALLDB">DB_CDB_ALLDB</a>, <a href="../../api_c/env_open.html#DB_NOMMAP">DB_NOMMAP</a> and <a href="../../api_c/env_open.html#DB_TXN_NOSYNC">DB_TXN_NOSYNC</a>. The
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first of these flags, <a href="../../api_c/env_set_flags.html#DB_CDB_ALLDB">DB_CDB_ALLDB</a>, provides new functionality,
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allowing Berkeley DB Concurrent Data Store applications to do locking across multiple databases.
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<p>The other two flags, <a href="../../api_c/env_open.html#DB_NOMMAP">DB_NOMMAP</a> and <a href="../../api_c/env_open.html#DB_TXN_NOSYNC">DB_TXN_NOSYNC</a>, were
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specified to the <a href="../../api_c/env_open.html">DBENV->open</a> method in previous releases. In
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the 3.2 release, they have been moved to the <a href="../../api_c/env_set_flags.html">DBENV->set_flags</a> function
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because this allows the database environment's value to be toggled
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during the life of the application as well as because it is a more
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appropriate place for them. Applications specifying either the
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<a href="../../api_c/env_open.html#DB_NOMMAP">DB_NOMMAP</a> or <a href="../../api_c/env_open.html#DB_TXN_NOSYNC">DB_TXN_NOSYNC</a> flags to the
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<a href="../../api_c/env_open.html">DBENV->open</a> function should replace those flags with calls to the
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<a href="../../api_c/env_set_flags.html">DBENV->set_flags</a> function.
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<table><tr><td><br></td><td width="1%"><a href="../../ref/upgrade.3.2/intro.html"><img src="../../images/prev.gif" alt="Prev"></a><a href="../../ref/toc.html"><img src="../../images/ref.gif" alt="Ref"></a><a href="../../ref/upgrade.3.2/callback.html"><img src="../../images/next.gif" alt="Next"></a>
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<p><font size=1><a href="http://www.sleepycat.com">Copyright Sleepycat Software</a></font>
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