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<!--Id: mem_class.so,v 10.6 2001/04/26 13:31:24 dda Exp -->
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<title>Berkeley DB: DbMemoryException</title>
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<h1>DbMemoryException</h1>
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<h3><pre>
#include <db_cxx.h>
<p>
class DbMemoryException : public DbException {
DbMemoryException(Dbt *dbt);
DbMemoryException(const char *description);
DbMemoryException(const char *prefix, Dbt *dbt);
DbMemoryException(const char *prefix1, const char *prefix2, Dbt *dbt);
Dbt *get_dbt() const;
};
</pre></h3>
<h1>Description</h1>
<p>This manual page describes the DbMemoryException class and how
it is used by the various Db* classes.
<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>. In this case, the
<a href="../api_cxx/get_dbt.html">DbMemoryException::get_dbt</a> method returns the problematic <a href="../api_cxx/dbt_class.html">Dbt</a>, and the
operation can be retried with a larger buffer.
<h1>Class</h1>
<a href="../api_cxx/except_class.html">DbException</a>
<h1>See Also</h1>
<a href="../api_cxx/get_errno.html">DbException::get_errno</a>,
<a href="../api_cxx/what.html">DbException::what</a>,
and
<a href="../api_cxx/mem_class.html">DbMemoryException</a>
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