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<!--$Id: env_fileid_reset.so,v 1.3 2005/12/13 16:48:01 bostic Exp $-->
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<b>DbEnv::fileid_reset</b>
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<tt>
<b><pre>
#include <db_cxx.h>
<p>
int
DbEnv::fileid_reset(const char *file, u_int32_t flags);
</pre></b>
<hr size=1 noshade>
<b>Description: DbEnv::fileid_reset</b>
<p>The DbEnv::fileid_reset method allows database files to be copied, and
then the copy used in the same database environment as the original.</p>
<p>All databases contain an ID string used to identify the database in the
database environment cache. If a physical database file is copied, and
used in the same environment as another file with the same ID strings,
corruption can occur. The DbEnv::fileid_reset method creates new ID
strings for all of the databases in the physical file.</p>
<p>The DbEnv::fileid_reset method modifies the physical file, in-place.
Applications should not reset IDs in files that are currently in use.</p>
<p>The DbEnv::fileid_reset method may be called at any time during the life of the
application.</p>
<p>The DbEnv::fileid_reset method
either returns a non-zero error value
or throws an exception that encapsulates a non-zero error value on
failure, and returns 0 on success.
</p>
<b>Parameters</b> <br>
<b>file</b><ul compact><li>The name of the physical file in which new file IDs are to be created.</ul>
<b>flags</b><ul compact><li>The <b>flags</b> parameter must be set to 0 or
the following value:
<br>
<b>DB_ENCRYPT</b><ul compact><li>The file contains encrypted databases.</ul>
<br></ul>
<br>
<br><b>Errors</b>
<p>The DbEnv::fileid_reset method
may fail and throw
<a href="../api_cxx/except_class.html">DbException</a>,
encapsulating one of the following non-zero errors, or return one of
the following non-zero errors:</p>
<br>
<b>EINVAL</b><ul compact><li>An
invalid flag value or parameter was specified.</ul>
<br>
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<br><b>Class</b>
<a href="../api_cxx/env_class.html">DbEnv</a>
<br><b>See Also</b>
<a href="../api_cxx/env_list.html">Database Environments and Related Methods</a>
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