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Replication Methods
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<h2 class="title" style="clear: both"><a id="repset_limit"></a>DbEnv::rep_set_limit()</h2>
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<pre class="programlisting">#include <db_cxx.h>
int
DbEnv::rep_set_limit(u_int32_t gbytes, u_int32_t bytes); </pre>
<p>
The <code class="methodname">DbEnv::rep_set_limit()</code> method sets
record transmission throttling. This is a byte-count limit on the
amount of data that will be transmitted from a site in response to
a single message processed by the
<a class="xref" href="repmessage.html" title="DbEnv::rep_process_message()">DbEnv::rep_process_message()</a> method.
The limit is not a hard limit, and the record that exceeds the limit
is the last record to be sent.
</p>
<p>
Record transmission throttling is turned on by default with a limit of
10MB.
</p>
<p>
If the values passed to the <code class="methodname">DbEnv::rep_set_limit()</code>
method are both zero, then the transmission limit is turned off.
</p>
<p>
The database environment's replication subsystem may also be
configured using the environment's <a href="../../programmer_reference/env_db_config.html#env_db_config.DB_CONFIG" class="olink">DB_CONFIG</a> file. The syntax
of the entry in that file is a single line with the string
"rep_set_limit", one or more whitespace characters, and the limit
specified in two parts: the gigabytes and the bytes values. For
example, "rep_set_limit 0 1048576" sets a 1 megabyte limit.
Because the <a href="../../programmer_reference/env_db_config.html#env_db_config.DB_CONFIG" class="olink">DB_CONFIG</a> file is read when the database environment
is opened, it will silently overrule configuration done before
that time.
</p>
<p>
The <code class="methodname">DbEnv::rep_set_limit()</code> method
configures a database environment, not only operations performed
using the specified <a class="link" href="env.html" title="Chapter 5. The DbEnv Handle">DbEnv</a>
handle.
</p>
<p>
The <code class="methodname">DbEnv::rep_set_limit()</code> method may be
called at any time during the life of the application.
</p>
<p>
The <code class="methodname">DbEnv::rep_set_limit()</code> <span>
<span>
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.
</span>
</span>
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<div class="sect2" lang="en" xml:lang="en">
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<h3 class="title"><a id="idp9596544"></a>Parameters</h3>
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<div class="sect3" lang="en" xml:lang="en">
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<div>
<h4 class="title"><a id="idp9611552"></a>gbytes</h4>
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</div>
<p>
The <span class="bold"><strong>gbytes</strong></span> parameter specifies the number of
gigabytes which, when added to the <span class="bold"><strong>bytes</strong></span>
parameter, specifies the maximum number of bytes that will be sent in a
single call to the <a class="xref" href="repmessage.html" title="DbEnv::rep_process_message()">DbEnv::rep_process_message()</a>
method.
</p>
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<div class="sect3" lang="en" xml:lang="en">
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<h4 class="title"><a id="idp9613816"></a>bytes</h4>
</div>
</div>
</div>
<p>
The <span class="bold"><strong>bytes</strong></span> parameter specifies the number of
bytes which, when added to the <span class="bold"><strong>gbytes</strong></span>
parameter, specifies the maximum number of bytes that will be sent in a
single call to the <a class="xref" href="repmessage.html" title="DbEnv::rep_process_message()">DbEnv::rep_process_message()</a>
method.
</p>
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<h3 class="title"><a id="idp9578392"></a>Class</h3>
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<a class="link" href="env.html" title="Chapter 5. The DbEnv Handle">DbEnv</a>
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<h3 class="title"><a id="idp9571760"></a>See Also</h3>
</div>
</div>
</div>
<p>
<a class="xref" href="rep.html#replist" title="Replication and Related Methods">Replication and Related Methods</a>
</p>
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