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<h2 class="title" style="clear: both"><a id="envfileid_reset"></a>DB_ENV->fileid_reset()</h2>
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<pre class="programlisting">#include <db.h>
int
DB_ENV->fileid_reset(DB_ENV *dbenv, const char *file, u_int32_t flags); </pre>
<p>
The <code class="methodname">DB_ENV->fileid_reset()</code> 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 <code class="methodname">DB_ENV->fileid_reset()</code> method
creates new ID strings for all of the databases in the physical file.
</p>
<p>
The <code class="methodname">DB_ENV->fileid_reset()</code> method modifies the physical file,
in-place. Applications should not reset IDs in files that are
currently in use.
</p>
<p>
The <code class="methodname">DB_ENV->fileid_reset()</code> method may be called at any time during
the life of the application.
</p>
<p>
The <code class="methodname">DB_ENV->fileid_reset()</code> <span>
<span>
method returns a non-zero error value on failure and 0 on success.
</span>
</span>
</p>
<div class="sect2" lang="en" xml:lang="en">
<div class="titlepage">
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<div>
<h3 class="title"><a id="id1662507"></a>Parameters</h3>
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<div class="sect3" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h4 class="title"><a id="id1662520"></a>file</h4>
</div>
</div>
</div>
<p>
The name of the physical file in which new file IDs are to be created.
</p>
</div>
<div class="sect3" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h4 class="title"><a id="id1662392"></a>flags</h4>
</div>
</div>
</div>
<p>
The <span class="bold"><strong>flags</strong></span> parameter must be set to 0
or the following value:
</p>
<div class="itemizedlist">
<ul type="disc">
<li>
<p>
<code class="literal">DB_ENCRYPT</code>
</p>
<p>
The file contains encrypted databases.
</p>
</li>
</ul>
</div>
</div>
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<h3 class="title"><a id="id1662508"></a>Errors</h3>
</div>
</div>
</div>
<p>
The <code class="methodname">DB_ENV->fileid_reset()</code> <span>
<span>
method may fail and return one of the following non-zero errors:
</span>
</span>
</p>
<div class="sect3" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h4 class="title"><a id="id1662711"></a>EINVAL</h4>
</div>
</div>
</div>
<p>
An invalid flag value or parameter was specified.
</p>
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<div class="sect2" lang="en" xml:lang="en">
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<h3 class="title"><a id="id1662705"></a>Class</h3>
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<a class="link" href="env.html" title="Chapter 5. The DB_ENV Handle">DB_ENV</a>
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<h3 class="title"><a id="id1662637"></a>See Also</h3>
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<a class="xref" href="env.html#envlist" title="Database Environments and Related Methods">Database Environments and Related Methods</a>
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2010.1
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x86_64
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main-release
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