<!--$Id: incomplete.so,v 1.8 2003/11/20 22:31:19 bostic Exp $--> <!--Copyright 1997-2003 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="../upgrade.3.2/renumber.html"><img src="../../images/prev.gif" alt="Prev"></a><a href="../toc.html"><img src="../../images/ref.gif" alt="Ref"></a><a href="../upgrade.3.2/tx_recover.html"><img src="../../images/next.gif" alt="Next"></a> </td></tr></table> <p> <h3 align=center>Release 3.2: DB_INCOMPLETE</h3> <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> <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> <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="../../java/com/sleepycat/db/Db.html#close">Db.close</a> , <a href="../../java/com/sleepycat/db/Db.html#sync">Db.sync</a> , <a href="../../java/com/sleepycat/db/DbEnv.html#checkpoint">DbEnv.checkpoint</a> .</p> <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.</p> <table width="100%"><tr><td><br></td><td align=right><a href="../upgrade.3.2/renumber.html"><img src="../../images/prev.gif" alt="Prev"></a><a href="../toc.html"><img src="../../images/ref.gif" alt="Ref"></a><a href="../upgrade.3.2/tx_recover.html"><img src="../../images/next.gif" alt="Next"></a> </td></tr></table> <p><font size=1><a href="../../sleepycat/legal.html">Copyright (c) 1996-2003</a> <a href="http://www.sleepycat.com">Sleepycat Software, Inc.</a> - All rights reserved.</font> </body> </html>
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