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<span>DbEnv::set_msgpfx()</span>
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<pre class="programlisting">#include <db_cxx.h>
void
DbEnv::set_msgpfx(const char *msgpfx); </pre>
<p>
Set the prefix string that appears before informational messages issued by
Berkeley DB. The length of this string can be no longer than 200.
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The <a class="xref" href="dbset_msgpfx.html" title="Db::set_msgpfx()">
<span>Db::set_msgpfx()</span>
</a>
and <code class="methodname">DbEnv::set_msgpfx()</code> methods do not copy the memory to which the
<span class="bold"><strong>msgpfx</strong></span> parameter refers; rather, they
maintain a reference to it. Although this allows applications to
modify the informational message prefix at any time (without repeatedly
calling the interfaces), it means the memory must be maintained until
the handle is closed.
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The <code class="methodname">DbEnv::set_msgpfx()</code> method configures operations performed using
the specified <a class="link" href="env.html" title="Chapter 5. The DbEnv Handle">DbEnv</a>
handle, not all operations performed on the underlying database
environment.
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The <code class="methodname">DbEnv::set_msgpfx()</code> method may be called at any time during the
life of the application.
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<h4 class="title"><a id="idm139755614558608"></a>msgpfx</h4>
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The <span class="bold"><strong>msgpfx</strong></span>
parameter is the application-specified
informational prefix for additional informational
messages.
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