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<!--$Id: txn.so,v 1.6 2003/10/18 19:16:20 bostic Exp $--> <!--Copyright (c) 1997,2008 Oracle. All rights reserved.--> <!--See the file LICENSE for redistribution information.--> <html> <head> <title>Berkeley DB Reference Guide: Release 4.0: txn_XXX</title> <meta name="description" content="Berkeley DB: An embedded database programmatic toolkit."> <meta name="keywords" content="embedded,database,programmatic,toolkit,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><b><dl><dt>Berkeley DB Reference Guide:<dd>Upgrading Berkeley DB Applications</dl></b></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> </td></tr></table> <p align=center><b>Release 4.0: txn_XXX</b></p> <p>The C API for the Berkeley DB Transaction subsystem was reworked in the 4.0 release as follows:</p> <table border=1 align=center> <tr><th>Historic functional interface</th><th>Berkeley DB 4.X method</th></tr> <tr><td>txn_abort</td><td><a href="../../api_c/txn_abort.html">DB_TXN->abort</a></td></tr> <tr><td>txn_begin</td><td><a href="../../api_c/txn_begin.html">DB_ENV->txn_begin</a></td></tr> <tr><td>txn_checkpoint</td><td><a href="../../api_c/txn_checkpoint.html">DB_ENV->txn_checkpoint</a></td></tr> <tr><td>txn_commit</td><td><a href="../../api_c/txn_commit.html">DB_TXN->commit</a></td></tr> <tr><td>txn_discard</td><td><a href="../../api_c/txn_discard.html">DB_TXN->discard</a></td></tr> <tr><td>txn_id</td><td><a href="../../api_c/txn_id.html">DB_TXN->id</a></td></tr> <tr><td>txn_prepare</td><td><a href="../../api_c/txn_prepare.html">DB_TXN->prepare</a></td></tr> <tr><td>txn_recover</td><td><a href="../../api_c/txn_recover.html">DB_ENV->txn_recover</a></td></tr> <tr><td>txn_stat</td><td><a href="../../api_c/txn_stat.html">DB_ENV->txn_stat</a></td></tr> </table> <p>Applications calling any of these functions should update their calls to 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 (easily done as the first argument to the existing call is the correct handle to use).</p> <p>As a special case, since applications might potentially have many calls to the txn_abort, txn_begin and txn_commit functions, those functions continue to work unchanged in the Berkeley DB 4.0 release.</p> <p>In addition, the <a href="../../api_c/txn_stat.html">DB_ENV->txn_stat</a> call has been changed in the 4.0 release to take a flags argument. To leave their historic behavior unchanged, applications should add a final argument of 0 to any calls made to <a href="../../api_c/txn_stat.html">DB_ENV->txn_stat</a>.</p> <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> </td></tr></table> <p><font size=1>Copyright (c) 1996,2008 Oracle. All rights reserved.</font> </body> </html>
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