1<!--$Id: memp_fget.so,v 1.5 2003/10/18 19:16:18 bostic Exp $--> 2<!--Copyright (c) 1997,2008 Oracle. All rights reserved.--> 3<!--See the file LICENSE for redistribution information.--> 4<html> 5<head> 6<title>Berkeley DB Reference Guide: Release 3.3: memp_fget, EIO</title> 7<meta name="description" content="Berkeley DB: An embedded database programmatic toolkit."> 8<meta name="keywords" content="embedded,database,programmatic,toolkit,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,Java,C,C++"> 9</head> 10<body bgcolor=white> 11<table width="100%"><tr valign=top> 12<td><b><dl><dt>Berkeley DB Reference Guide:<dd>Upgrading Berkeley DB Applications</dl></b></td> 13<td align=right><a href="../upgrade.3.3/conflict.html"><img src="../../images/prev.gif" alt="Prev"></a><a href="../toc.html"><img src="../../images/ref.gif" alt="Ref"></a><a href="../upgrade.3.3/txn_prepare.html"><img src="../../images/next.gif" alt="Next"></a> 14</td></tr></table> 15<p align=center><b>Release 3.3: memp_fget, EIO</b></p> 16<p>Previous releases of Berkeley DB returned the system error EIO when the 17memp_fget function was called to retrieve a page, the page did not 18exist, and the <a href="../../api_c/memp_fget.html#DB_MPOOL_CREATE">DB_MPOOL_CREATE</a> flag was not set. In the 3.3 19release, the error <a href="../../api_c/memp_fget.html#DB_PAGE_NOTFOUND">DB_PAGE_NOTFOUND</a> is returned instead, to 20allow applications to distinguish between recoverable and 21non-recoverable errors. Applications calling the memp_fget function 22and checking for a return of EIO should check for 23<a href="../../api_c/memp_fget.html#DB_PAGE_NOTFOUND">DB_PAGE_NOTFOUND</a> instead.</p> 24<p>Previous releases of Berkeley DB treated filesystem I/O failure (the most 25common of which the filesystem running out of space), as a fatal error, 26returning <a href="../../ref/program/errorret.html#DB_RUNRECOVERY">DB_RUNRECOVERY</a>. When a filesystem failure happens in 27the 3.3 release Berkeley DB returns the underlying system error (usually EIO), 28but can continue to run. Applications should abort any enclosing 29transaction when a recoverable system error occurs in order to recover 30from the error.</p> 31<table width="100%"><tr><td><br></td><td align=right><a href="../upgrade.3.3/conflict.html"><img src="../../images/prev.gif" alt="Prev"></a><a href="../toc.html"><img src="../../images/ref.gif" alt="Ref"></a><a href="../upgrade.3.3/txn_prepare.html"><img src="../../images/next.gif" alt="Next"></a> 32</td></tr></table> 33<p><font size=1>Copyright (c) 1996,2008 Oracle. All rights reserved.</font> 34</body> 35</html> 36
