<!--$Id: txn_abort.so,v 11.15 2002/08/18 21:17:30 bostic Exp $--> <!--$Id: m4.tcl,v 11.28 2004/12/16 19:13:05 bostic Exp $--> <!--Copyright (c) 1997,2008 Oracle. All rights reserved.--> <!--See the file LICENSE for redistribution information.--> <html> <head> <title>Berkeley DB: txn abort</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><i>txn</i> <b>abort</b></b> </td> <td align=right> <a href="../api_tcl/api_tcl.html"><img src="../images/api.gif" alt="API"></a> <a href="../ref/toc.html"><img src="../images/ref.gif" alt="Ref"></a></td> </tr></table> <hr size=1 noshade> <tt> <b><pre>txn abort </pre></b> <b>Description(txn abort)</b> <p>The <i>txn</i> <b>abort</b> command causes an abnormal termination of the transaction.</p> <p>The log is played backward, and any necessary recovery operations are performed. After recovery is completed, all locks held by the transaction are acquired by the parent transaction in the case of a nested transaction, or released in the case of a non-nested transaction. As is the case for <i>txn</i> <b>commit</b>, applications that require strict two-phase locking should not explicitly release any locks.</p> <p>In the case of nested transactions, aborting the parent transaction causes all children of that transaction to be aborted.</p> <p>After <i>txn</i> <b>abort</b> has been called, regardless of its return, the <b>txn</b> handle may not be accessed again.</p> <p>The <i>txn</i> <b>abort</b> command returns 0 on success, and in the case of error, a Tcl error is thrown.</p> </tt> <table width="100%"><tr><td><br></td><td align=right> <a href="../api_tcl/api_tcl.html"><img src="../images/api.gif" alt="API"></a><a href="../ref/toc.html"><img src="../images/ref.gif" alt="Ref"></a> </td></tr></table> <p><font size=1>Copyright (c) 1996,2008 Oracle. All rights reserved.</font> </body> </html>