<!--$Id: incomplete.html,v 1.1.1.1 2003/02/15 04:56:04 zarzycki Exp $--> <!--Copyright 1997-2002 by Sleepycat Software, Inc.--> <!--All rights reserved.--> <!--See the file LICENSE for redistribution information.--> <html> <head> <title>Berkeley DB Reference Guide: Release 3.2: DB_INCOMPLETE</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> <table width="100%"><tr valign=top> <td><h3><dl><dt>Berkeley DB Reference Guide:<dd>Upgrading Berkeley DB Applications</dl></h3></td> <td align=right><a href="../../ref/upgrade.3.2/renumber.html"><img src="../../images/prev.gif" alt="Prev"></a><a href="../../reftoc.html"><img src="../../images/ref.gif" alt="Ref"></a><a href="../../ref/upgrade.3.2/tx_recover.html"><img src="../../images/next.gif" alt="Next"></a> </td></tr></table> <p> <h1 align=center>Release 3.2: DB_INCOMPLETE</h1> <p>There are a number of functions that flush pages from the Berkeley DB shared memory buffer pool to disk. Most of those functions can potentially fail because a page that needs to be flushed is not currently available. However, this is not a hard failure and is rarely cause for concern. In the Berkeley DB 3.2 release, the C++ API (if that API is configured to throw exceptions) and the Java API have been changed so that this failure does not throw an exception, but rather returns a non-zero error code of DB_INCOMPLETE. <p>The following C++ methods will return DB_INCOMPLETE rather than throw an exception: <a href="../../api_cxx/db_close.html">Db::close</a>, <a href="../../api_cxx/db_sync.html">Db::sync</a>, DbEnv::memp_sync, DbEnv::txn_checkpoint, DbMpoolFile::memp_fsync. <p>The following Java methods are now declared "public int" rather than "public void", and will return Db.DB_INCOMPLETE rather than throw an exception: <a href="../../api_java/db_close.html">Db.close</a>, <a href="../../api_java/db_sync.html">Db.sync</a>, DbEnv.txn_checkpoint. <p>It is likely that the only change required by any application will be those currently checking for a DB_INCOMPLETE return that has been encapsulated in an exception. <table width="100%"><tr><td><br></td><td align=right><a href="../../ref/upgrade.3.2/renumber.html"><img src="../../images/prev.gif" alt="Prev"></a><a href="../../reftoc.html"><img src="../../images/ref.gif" alt="Ref"></a><a href="../../ref/upgrade.3.2/tx_recover.html"><img src="../../images/next.gif" alt="Next"></a> </td></tr></table> <p><font size=1><a href="http://www.sleepycat.com">Copyright Sleepycat Software</a></font> </body> </html>