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89 lines
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HTML
89 lines
4 KiB
HTML
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
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<title>txn abort</title>
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<link rel="stylesheet" href="apiReference.css" type="text/css" />
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<meta name="generator" content="DocBook XSL Stylesheets V1.73.2" />
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<link rel="start" href="index.html" title="Berkeley DB TCL API Reference" />
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<link rel="up" href="tclapi.html" title="Chapter 1. Berkeley DB Tcl APIs" />
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<link rel="prev" href="txn.html" title="env txn" />
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<link rel="next" href="txn_checkpoint.html" title="env txn_checkpoint" />
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</head>
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<body>
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<div xmlns="" class="navheader">
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<div class="libver">
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<p>Library Version 11.2.5.2</p>
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</div>
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<table width="100%" summary="Navigation header">
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<tr>
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<th colspan="3" align="center"><span xmlns="http://www.w3.org/1999/xhtml" class="emphasis"><em>txn</em></span> abort</th>
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</tr>
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<tr>
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<td width="20%" align="left"><a accesskey="p" href="txn.html">Prev</a> </td>
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<th width="60%" align="center">Chapter 1.
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Berkeley DB Tcl APIs
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</th>
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<td width="20%" align="right"> <a accesskey="n" href="txn_checkpoint.html">Next</a></td>
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</tr>
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</table>
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<hr />
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<div class="sect1" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h2 class="title" style="clear: both"><a id="txn_abort"></a><span class="emphasis"><em>txn</em></span> abort</h2>
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</div>
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</div>
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</div>
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<pre class="programlisting">txn abort </pre>
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<p>
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The <span class="emphasis"><em>txn</em></span> <span class="bold"><strong>abort</strong></span>
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command causes an abnormal termination of the transaction.
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</p>
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<p>
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The log is played backward, and any necessary recovery operations are
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performed. After recovery is completed, all locks held by the
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transaction are acquired by the parent transaction in the case of a
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nested transaction, or released in the case of a non-nested
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transaction. As is the case for <span class="emphasis"><em>txn</em></span> <span class="bold"><strong>commit</strong></span>, applications that require strict
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two-phase locking should not explicitly release any locks.
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</p>
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<p>
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In the case of nested transactions, aborting the parent transaction
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causes all children of that transaction to be aborted.
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</p>
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<p>
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After <span class="emphasis"><em>txn</em></span> <span class="bold"><strong>abort</strong></span>
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has been called, regardless of its return, the <span class="bold"><strong>txn</strong></span> handle may not be accessed again.
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</p>
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<p>
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The <span class="emphasis"><em>txn</em></span> <span class="bold"><strong>abort</strong></span>
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command returns 0 on success, and in the case of error, a Tcl error is
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thrown.
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</p>
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</div>
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<div class="navfooter">
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<hr />
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<table width="100%" summary="Navigation footer">
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<tr>
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<td width="40%" align="left"><a accesskey="p" href="txn.html">Prev</a> </td>
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<td width="20%" align="center">
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<a accesskey="u" href="tclapi.html">Up</a>
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</td>
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<td width="40%" align="right"> <a accesskey="n" href="txn_checkpoint.html">Next</a></td>
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</tr>
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<tr>
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<td width="40%" align="left" valign="top"><span class="emphasis"><em>env</em></span> txn </td>
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<td width="20%" align="center">
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<a accesskey="h" href="index.html">Home</a>
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</td>
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<td width="40%" align="right" valign="top"> <span class="emphasis"><em>env</em></span> txn_checkpoint</td>
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</tr>
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</table>
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</div>
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</body>
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</html>
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