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Release 5.2.28 on 6/10/2011
2011-09-13 17:44:24 +00:00
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<title>DB_ENV-&gt;set_msgfile()</title>
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<p>Library Version 11.2.5.2</p>
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<table width="100%" summary="Navigation header">
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<th colspan="3" align="center">DB_ENV-&gt;set_msgfile()</th>
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<tr>
<td width="20%" align="left"><a accesskey="p" href="envset_msgcall.html">Prev</a> </td>
<th width="60%" align="center">Chapter 5. 
The DB_ENV Handle
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<td width="20%" align="right"> <a accesskey="n" href="envset_shm_key.html">Next</a></td>
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<div class="sect1" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h2 class="title" style="clear: both"><a id="envset_msgfile"></a>DB_ENV-&gt;set_msgfile()</h2>
</div>
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<pre class="programlisting">#include &lt;db.h&gt;
void
DB_ENV-&gt;set_msgfile(DB_ENV *dbenv, FILE *msgfile); </pre>
<p>
There are interfaces in the Berkeley DB library which either directly
output informational messages or statistical information, or configure
the library to output such messages when performing other operations,
for example, <a class="xref" href="envset_verbose.html" title="DB_ENV-&gt;set_verbose()">DB_ENV-&gt;set_verbose()</a> and
<a class="xref" href="envstat.html" title="DB_ENV-&gt;stat_print()">DB_ENV-&gt;stat_print()</a>.
</p>
<p>
The <code class="methodname">DB_ENV-&gt;set_msgfile()</code> and
<a class="xref" href="dbset_msgfile.html" title="DB-&gt;set_msgfile()">DB-&gt;set_msgfile()</a> methods
are used to display these messages for the application. In this case
the message will include a trailing &lt;newline&gt; character.
</p>
<p>
Setting <span class="bold"><strong>msgfile</strong></span> to NULL unconfigures
the interface.
</p>
<p>
Alternatively, you can use the
<a class="xref" href="envset_msgcall.html" title="DB_ENV-&gt;set_msgcall()">DB_ENV-&gt;set_msgcall()</a> or
<a class="xref" href="dbset_msgcall.html" title="DB-&gt;set_msgcall()">DB-&gt;set_msgcall()</a>
methods to capture the additional error information in a way that does
not use C library FILE *'s.
</p>
<p>
The <code class="methodname">DB_ENV-&gt;set_msgfile()</code> method configures operations performed
using the specified <a class="link" href="env.html" title="Chapter 5.  The DB_ENV Handle">DB_ENV</a> handle, not all
operations performed on the underlying database environment.
</p>
<p>
The <code class="methodname">DB_ENV-&gt;set_msgfile()</code> method may be called at any time during the
life of the application.
</p>
<div class="sect2" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
Release 5.2.36 on 9/14/2022
2011-12-20 00:07:10 +00:00
<h3 class="title"><a id="id3715871"></a>Parameters</h3>
Release 5.2.28 on 6/10/2011
2011-09-13 17:44:24 +00:00
</div>
</div>
</div>
<div class="sect3" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
Release 5.2.36 on 9/14/2022
2011-12-20 00:07:10 +00:00
<h4 class="title"><a id="id3716673"></a>msgfile</h4>
Release 5.2.28 on 6/10/2011
2011-09-13 17:44:24 +00:00
</div>
</div>
</div>
<p>
The <span class="bold"><strong>msgfile</strong></span> parameter is a C library
FILE * to be used for displaying messages.
</p>
</div>
</div>
<div class="sect2" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
Release 5.2.36 on 9/14/2022
2011-12-20 00:07:10 +00:00
<h3 class="title"><a id="id3716793"></a>Class</h3>
Release 5.2.28 on 6/10/2011
2011-09-13 17:44:24 +00:00
</div>
</div>
</div>
<p>
<a class="link" href="env.html" title="Chapter 5.  The DB_ENV Handle">DB_ENV</a>
</p>
</div>
<div class="sect2" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
Release 5.2.36 on 9/14/2022
2011-12-20 00:07:10 +00:00
<h3 class="title"><a id="id3716660"></a>See Also</h3>
Release 5.2.28 on 6/10/2011
2011-09-13 17:44:24 +00:00
</div>
</div>
</div>
<p>
<a class="xref" href="env.html#envlist" title="Database Environments and Related Methods">Database Environments and Related Methods</a>
</p>
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