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<title>Berkeley DB: Db::set_message_stream</title>
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Db::set_message_stream
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#include &lt;db_cxx.h&gt;

void Db::set_message_stream(class ostream*);
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Description: Db::set_message_stream
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 href="../../db4-devel-4.7.25/api_cxx/env_set_verbose.html">DbEnv::set_verbose</a> and <a href="../../db4-devel-4.7.25/api_cxx/env_stat.html">DbEnv::stat_print</a>.
The <a href="../../db4-devel-4.7.25/api_cxx/env_set_msg_stream.html">DbEnv::set_message_stream</a> and
Db::set_message_stream methods are used to display these messages for
the application. In this case, the message will include a trailing
&lt;newline&gt; character.
Setting stream to NULL unconfigures the interface.
Alternatively, you can use the <a href="../../db4-devel-4.7.25/api_cxx/env_set_msgfile.html">DbEnv::set_msgfile</a> and
<a href="../../db4-devel-4.7.25/api_cxx/db_set_msgfile.html">Db::set_msgfile</a> methods to display the messages via a C library FILE *,
or the <a href="../../db4-devel-4.7.25/api_cxx/env_set_msgcall.html">DbEnv::set_msgcall</a> and <a href="../../db4-devel-4.7.25/api_cxx/db_set_msgcall.html">Db::set_msgcall</a> methods to
capture the additional error information in a way that does not use
either output streams or C library FILE *'s. You should not mix these
approaches.
For <a href="../../db4-devel-4.7.25/api_cxx/db_class.html">Db</a> handles opened inside of Berkeley DB environments, calling the
Db::set_message_stream method affects the entire environment and is equivalent to calling
the <a href="../../db4-devel-4.7.25/api_cxx/env_set_msg_stream.html">DbEnv::set_message_stream</a> method.
The Db::set_message_stream method configures operations performed using the specified
<a href="../../db4-devel-4.7.25/api_cxx/db_class.html">Db</a> handle, not all operations performed on the underlying
database.
The Db::set_message_stream method may be called at any time during the life of the
application.
Parameters 
 stream<ul compact><li>The stream parameter is the application-specified output stream to
be used for additional message information.</ul>
 
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<a href="../../db4-devel-4.7.25/api_cxx/db_list.html">Databases and Related Methods</a>
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