<!--$Id: env_set_tx_timestamp.so,v 10.26 2003/11/08 19:17:33 bostic Exp $--> <!--Copyright 1997-2003 by Sleepycat Software, Inc.--> <!--All rights reserved.--> <!--See the file LICENSE for redistribution information.--> <html> <head> <title>Berkeley DB: DB_ENV->set_tx_timestamp</title> <meta name="description" content="Berkeley DB: An embedded database programmatic toolkit."> <meta name="keywords" content="embedded,database,programmatic,toolkit,b+tree,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,Java,C,C++"> </head> <body bgcolor=white> <a name="2"><!--meow--></a> <table width="100%"><tr valign=top> <td> <h3>DB_ENV->set_tx_timestamp</h3> </td> <td align=right> <a href="../../db42-devel-4.2.52/api_c/api_index.html"><img src="../../db42-4.2.52/images/api.gif" alt="API"></a> <a href="../../db42-devel-4.2.52/ref/toc.html"><img src="../../db42-4.2.52/images/ref.gif" alt="Ref"></a> </td></tr></table> <hr size=1 noshade> <tt> <h3><pre> #include <db.h> <p> int DB_ENV->set_tx_timestamp(DB_ENV *dbenv, time_t *timestamp); <p> int DB_ENV->get_tx_timestamp(DB_ENV *dbenv, time_t *timestampp); </pre></h3> <hr size=1 noshade> <h3>Description: DB_ENV->set_tx_timestamp</h3> <a name="3"><!--meow--></a> <p>Recover to the time specified by <b>timestamp</b> rather than to the most current possible date.</p> <p>Once a database environment has been upgraded to a new version of Berkeley DB involving a log format change (see <a href="../../db42-devel-4.2.52/ref/upgrade/process.html">Upgrading Berkeley DB installations</a>), it is no longer possible to recover to a specific time before that upgrade.</p> <p>The DB_ENV->set_tx_timestamp method configures operations performed using the specified <a href="../../db42-devel-4.2.52/api_c/env_class.html">DB_ENV</a> handle, not all operations performed on the underlying database environment.</p> <p>The DB_ENV->set_tx_timestamp method may not be called after the <a href="../../db42-devel-4.2.52/api_c/env_open.html">DB_ENV->open</a> method is called. </p> <p>The DB_ENV->set_tx_timestamp method returns a non-zero error value on failure and 0 on success. </p> <h3>Parameters</h3> <p><dl compact> <p><dt><b>timestamp</b><dd> The <b>timestamp</b> parameter references the memory location where the recovery timestamp is located. <p>The <b>timestamp</b> parameter should be the number of seconds since 0 hours, 0 minutes, 0 seconds, January 1, 1970, Coordinated Universal Time; that is, the Epoch.</p> </dl> <h3>Errors</h3> <p>The DB_ENV->set_tx_timestamp method may fail and return one of the following non-zero errors:</p> <p><dl compact> <p><dt>EINVAL<dd>If it is not possible to recover to the specified time using the log files currently present in the environment; or if an invalid flag value or parameter was specified. </dl> <hr size=1 noshade> <h3>Description: DB_ENV->get_tx_timestamp</h3> <p>The DB_ENV->get_tx_timestamp method returns the recovery timestamp.</p> <p>The DB_ENV->get_tx_timestamp method may be called at any time during the life of the application.</p> <p>The DB_ENV->get_tx_timestamp method returns a non-zero error value on failure and 0 on success. </p> <h3>Parameters</h3> <p><dl compact> <p><dt><b>timestampp</b><dd> The DB_ENV->get_tx_timestamp method returns the recovery timestamp in <b>timestampp</b>. </dl> <hr size=1 noshade> <h3>Class</h3> <a href="../../db42-devel-4.2.52/api_c/env_class.html">DB_ENV</a>, <a href="../../db42-devel-4.2.52/api_c/txn_class.html">DB_TXN</a> <h3>See Also</h3> <a href="../../db42-devel-4.2.52/api_c/txn_list.html">Transaction Subsystem and Related Methods</a> </tt> <table width="100%"><tr><td><br></td><td align=right> <a href="../../db42-devel-4.2.52/api_c/api_index.html"><img src="../../db42-4.2.52/images/api.gif" alt="API"></a><a href="../../db42-devel-4.2.52/ref/toc.html"><img src="../../db42-4.2.52/images/ref.gif" alt="Ref"></a> </td></tr></table> <p><font size=1><a href="../../db42-devel-4.2.52/sleepycat/legal.html">Copyright (c) 1996-2003</a> <a href="http://www.sleepycat.com">Sleepycat Software, Inc.</a> - All rights reserved.</font> </body> </html>
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