1<!--$Id: txn.so,v 1.6 2003/10/18 19:16:20 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 4.0: txn_XXX</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.4.0/mp.html"><img src="/images/prev.gif" alt="Prev"></a><a href="/toc.html"><img src="/images/ref.gif" alt="Ref"></a><a href="/upgrade.4.0/env.html"><img src="/images/next.gif" alt="Next"></a> 14</td></tr></table> 15<p align=center><b>Release 4.0: txn_XXX</b></p> 16<p>The C API for the Berkeley DB Transaction subsystem was reworked in the 4.0 17release as follows:</p> 18<table border=1 align=center> 19<tr><th>Historic functional interface</th><th>Berkeley DB 4.X method</th></tr> 20<tr><td>txn_abort</td><td><a href="/api_c/txn_abort.html">DB_TXN->abort</a></td></tr> 21<tr><td>txn_begin</td><td><a href="/api_c/txn_begin.html">DB_ENV->txn_begin</a></td></tr> 22<tr><td>txn_checkpoint</td><td><a href="/api_c/txn_checkpoint.html">DB_ENV->txn_checkpoint</a></td></tr> 23<tr><td>txn_commit</td><td><a href="/api_c/txn_commit.html">DB_TXN->commit</a></td></tr> 24<tr><td>txn_discard</td><td><a href="/api_c/txn_discard.html">DB_TXN->discard</a></td></tr> 25<tr><td>txn_id</td><td><a href="/api_c/txn_id.html">DB_TXN->id</a></td></tr> 26<tr><td>txn_prepare</td><td><a href="/api_c/txn_prepare.html">DB_TXN->prepare</a></td></tr> 27<tr><td>txn_recover</td><td><a href="/api_c/txn_recover.html">DB_ENV->txn_recover</a></td></tr> 28<tr><td>txn_stat</td><td><a href="/api_c/txn_stat.html">DB_ENV->txn_stat</a></td></tr> 29</table> 30<p>Applications calling any of these functions should update their calls 31to use the enclosing <a href="/api_c/env_class.html">DB_ENV</a> or <a href="/api_c/txn_class.html">DB_TXN</a> handle's method 32(easily done as the first argument to the existing call is the correct 33handle to use).</p> 34<p>As a special case, since applications might potentially have many calls 35to the txn_abort, txn_begin and txn_commit functions, those functions 36continue to work unchanged in the Berkeley DB 4.0 release.</p> 37<p>In addition, the <a href="/api_c/txn_stat.html">DB_ENV->txn_stat</a> call has been changed in the 4.0 38release to take a flags argument. To leave their historic behavior 39unchanged, applications should add a final argument of 0 to any calls 40made to <a href="/api_c/txn_stat.html">DB_ENV->txn_stat</a>.</p> 41<table width="100%"><tr><td><br></td><td align=right><a href="/upgrade.4.0/mp.html"><img src="/images/prev.gif" alt="Prev"></a><a href="/toc.html"><img src="/images/ref.gif" alt="Ref"></a><a href="/upgrade.4.0/env.html"><img src="/images/next.gif" alt="Next"></a> 42</td></tr></table> 43<p><font size=1>Copyright (c) 1996,2008 Oracle. All rights reserved.</font> 44</body> 45</html> 46
