<!--$Id: memp_class.so,v 10.21 2006/10/24 15:47:59 bostic Exp $--> <!--Copyright (c) 1997,2008 Oracle. All rights reserved.--> <!--See the file LICENSE for redistribution information.--> <html> <head> <title>Berkeley DB: DbMemoryException</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>DbMemoryException</b> </td> <td align=right> <a href="../api_cxx/api_core.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> #include <db_cxx.h> <p> class DbMemoryException : public DbException { public: Dbt *get_dbt() const; }; </pre></b> <hr size=1 noshade> <b>Description: DbMemoryException</b> <p>This information describes the DbMemoryException class and how it is used by the various Db* classes.</p> <p>A DbMemoryException is thrown when there is insufficient memory to complete an operation, and there is the possibility of recovering. An example is during a <a href="../api_cxx/db_get.html">Db::get</a> or <a href="../api_cxx/dbc_get.html">Dbc::get</a> operation with the <a href="../api_cxx/dbt_class.html">Dbt</a> flags set to <a href="../api_cxx/dbt_class.html#DB_DBT_USERMEM">DB_DBT_USERMEM</a>.</p> <a name="2"><!--meow--></a> <p>The <a href="../api_cxx/except_class.html">DbException</a> errno value is set to <a href="../api_cxx/dbt_class.html#DB_BUFFER_SMALL">DB_BUFFER_SMALL</a> or ENOMEM.</p> <p>The <b>get_dbt</b> method returns the <a href="../api_cxx/dbt_class.html">Dbt</a> with insufficient memory to complete the operation, causing the DbMemoryException to be thrown. The <a href="../api_cxx/dbt_class.html">Dbt</a> pointer may or may not refer to valid memory, depending on whether the <a href="../api_cxx/dbt_class.html">Dbt</a> used in the call to the failed Berkeley DB method is still in scope and has not been deleted.</p> </tt> <table width="100%"><tr><td><br></td><td align=right> <a href="../api_cxx/api_core.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>