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<!--$Id: env_cdsgroup_begin.so,v 1.3 2008/04/09 20:31:41 sarette Exp $--> <!--Copyright (c) 1997,2008 Oracle. All rights reserved.--> <!--See the file LICENSE for redistribution information.--> <html> <head> <title>Berkeley DB: DB_ENV->cdsgroup_begin</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>DB_ENV->cdsgroup_begin</b> </td> <td align=right> <a href="../../db4-devel-4.7.25/api_c/api_core.html"><img src="../../db4-devel-4.7.25/images/api.gif" alt="API"></a> <a href="../../db4-devel-4.7.25/ref/toc.html"><img src="../../db4-devel-4.7.25/images/ref.gif" alt="Ref"></a></td> </tr></table> <hr size=1 noshade> <tt> <b><pre> #include <db.h> <p> int DB_ENV->cdsgroup_begin(DB_ENV *dbenv, DB_TXN **tid); </pre></b> <hr size=1 noshade> <b>Description: DB_ENV->cdsgroup_begin</b> <a name="2"><!--meow--></a> <p>The DB_ENV->cdsgroup_begin method allocates a locker ID in an environment configured for Berkeley DB Concurrent Data Store applications. It copies a pointer to a <a href="../../db4-devel-4.7.25/api_c/txn_class.html">DB_TXN</a> that uniquely identifies the locker ID into the memory to which <b>tid</b> refers. Calling the <a href="../../db4-devel-4.7.25/api_c/txn_commit.html">DB_TXN->commit</a> method will discard the allocated locker ID.</p> <p>See <a href="../../db4-devel-4.7.25/ref/cam/intro.html">Berkeley DB Concurrent Data Store applications</a> for more information about when this is required.</p> <p>The DB_ENV->cdsgroup_begin method may be called at any time during the life of the application.</p> <p>The DB_ENV->cdsgroup_begin method returns a non-zero error value on failure and 0 on success. </p> <br><b>Errors</b> <p>The DB_ENV->cdsgroup_begin method may fail and return one of the following non-zero errors:</p> <br> <b>ENOMEM</b><ul compact><li>The maximum number of lockers has been reached.</ul> <br> <hr size=1 noshade> <br><b>Class</b> <a href="../../db4-devel-4.7.25/api_c/env_class.html">DB_ENV</a>, <a href="../../db4-devel-4.7.25/api_c/txn_class.html">DB_TXN</a> <br><b>See Also</b> <a href="../../db4-devel-4.7.25/api_c/txn_list.html">Transaction Subsystem and Related Methods</a> </tt> <table width="100%"><tr><td><br></td><td align=right> <a href="../../db4-devel-4.7.25/api_c/api_core.html"><img src="../../db4-devel-4.7.25/images/api.gif" alt="API"></a><a href="../../db4-devel-4.7.25/ref/toc.html"><img src="../../db4-devel-4.7.25/images/ref.gif" alt="Ref"></a> </td></tr></table> <p><font size=1>Copyright (c) 1996,2008 Oracle. All rights reserved.</font> </body> </html>
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