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<h2 class="title" style="clear: both"><a id="repset_timeout"></a>DbEnv::rep_set_timeout()</h2>
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<pre class="programlisting">#include <db_cxx.h>
int
DbEnv::rep_set_timeout(int which, u_int32_t timeout); </pre>
<p>
The <code class="methodname">DbEnv::rep_set_timeout()</code> method specifies a variety of
replication timeout values.
</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_timeout", one or
more whitespace characters, and the <span class="bold"><strong>which</strong></span> parameter
specified as a string and the timeout specified as two parts. For example, "rep_set_timeout
DB_REP_CONNECTION_RETRY 15000000" specifies the connection retry timeout for 15 seconds.
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_timeout()</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_timeout()</code> method may not be
called to set the master lease timeout after the
<a class="xref" href="repmgrstart.html" title="DbEnv::repmgr_start()">DbEnv::repmgr_start()</a> method or the
<a class="xref" href="repstart.html" title="DbEnv::rep_start()">DbEnv::rep_start()</a>
method is called. For all other timeouts, the
<code class="methodname">DbEnv::rep_set_timeout()</code>
method may be called at any time during the life of the application.
</p>
<p>
The <code class="methodname">DbEnv::rep_set_timeout()</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>
</p>
<div class="sect2" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h3 class="title"><a id="id1704548"></a>Parameters</h3>
</div>
</div>
</div>
<div class="sect3" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h4 class="title"><a id="id1704529"></a>timeout</h4>
</div>
</div>
</div>
<p>
The <span class="bold"><strong>timeout</strong></span> parameter is the timeout value. It
must be specified as an unsigned 32-bit number of microseconds, limiting the
maximum timeout to roughly 71 minutes.
</p>
</div>
<div class="sect3" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h4 class="title"><a id="id1704753"></a>which</h4>
</div>
</div>
</div>
<p>
The <span class="bold"><strong>which</strong></span> parameter must be set to
one of the following values:
</p>
<div class="itemizedlist">
<ul type="disc">
<li>
<p><a id="set_timeout_DB_REP_ACK_TIMEOUT"></a>
<code class="literal">DB_REP_ACK_TIMEOUT</code>
</p>
<p>
Configure the amount of time the Replication Manager's transport
function waits to collect enough acknowledgments from replication
group clients, before giving up and returning a failure indication.
The default wait time is 1 second.
</p>
</li>
<li>
<p>
<code class="literal">DB_REP_CHECKPOINT_DELAY</code>
</p>
<p>
Configure the amount of time a master site will delay between
completing a checkpoint and writing a checkpoint record into the log.
This delay allows clients to complete their own checkpoints before the
master requires completion of them. The default is 30 seconds. If all
databases in the environment, and the environment's transaction log,
are configured to reside in memory (never preserved to disk), then,
although checkpoints are still necessary, the delay is not useful and
should be set to 0.
</p>
</li>
<li>
<p>
<code class="literal">DB_REP_CONNECTION_RETRY</code>
</p>
<p>
Configure the amount of time the Replication Manager will wait before
trying to re-establish a connection to another site after a
communication failure. The default wait time is 30 seconds.
</p>
</li>
<li>
<p>
<code class="literal">DB_REP_ELECTION_TIMEOUT</code>
</p>
<p>
The timeout period for an election. The default timeout is 2 seconds.
</p>
</li>
<li>
<p>
<code class="literal">DB_REP_ELECTION_RETRY</code>
</p>
<p>
Configure the amount of time the Replication Manager will wait before
retrying a failed election. The default wait time is 10 seconds.
</p>
</li>
<li>
<p><a id="set_timeout_DB_REP_FULL_ELECTION_TIMEOUT"></a>
<code class="literal">DB_REP_FULL_ELECTION_TIMEOUT</code>
</p>
<p>
An optional configuration timeout period to wait for full election
participation the first time the replication group finds a master. By
default this option is turned off and normal election timeouts are
used. (See the <a href="../../programmer_reference/rep_elect.html" class="olink">Elections</a>
section in the <em class="citetitle">Berkeley DB Programmer's Reference Guide</em> for more information.)
</p>
</li>
<li>
<p>
<code class="literal">DB_REP_HEARTBEAT_MONITOR</code>
</p>
<p>
The amount of time the Replication Manager, running at a client site,
waits for some message activity on the connection from the master
(heartbeats or other messages) before concluding that the connection
has been lost.
This timeout should be of longer duration than the
<code class="literal">DB_REP_HEARTBEAT_SEND</code> timeout to ensure that heartbeats
are not missed.
When 0 (the default), no monitoring is performed.
</p>
</li>
<li>
<p>
<code class="literal">DB_REP_HEARTBEAT_SEND</code>
</p>
<p>
The frequency at which the Replication Manager, running at a master
site, broadcasts a heartbeat message in an otherwise idle system.
When 0 (the default), no heartbeat messages will be sent.
</p>
</li>
<li>
<p>
<code class="literal">DB_REP_LEASE_TIMEOUT</code>
</p>
<p>
Configure the amount of time a client grants its master lease to a
master. When using master leases all sites in a replication group
must use the same lease timeout value. There is no default value. If
leases are desired, this method must be called prior to calling
<a class="xref" href="repstart.html" title="DbEnv::rep_start()">DbEnv::rep_start()</a> method.
See also <a class="xref" href="repclockskew.html" title="DbEnv::rep_set_clockskew()">DbEnv::rep_set_clockskew()</a>
method, <a class="xref" href="repconfig.html" title="DbEnv::rep_set_config()">DbEnv::rep_set_config()</a>
method or <a href="../../programmer_reference/rep_lease.html" class="olink">Master leases</a>.
</p>
</li>
</ul>
</div>
</div>
</div>
<div class="sect2" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h3 class="title"><a id="id1704626"></a>Errors</h3>
</div>
</div>
</div>
<p>
The <code class="methodname">DbEnv::rep_set_timeout()</code> <span>
<span>
method may fail and throw a <a class="link" href="dbexception.html" title="Chapter 6. The DbException Class">DbException</a>
exception, encapsulating one of the following non-zero errors, or 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="id1705031"></a>EINVAL</h4>
</div>
</div>
</div>
<p>
If setting the lease timeout and replication has already been started; if
setting a Replication Manager timeout for a Base API application;
or if an invalid flag value or parameter was specified.
</p>
</div>
</div>
<div class="sect2" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h3 class="title"><a id="id1704918"></a>Class</h3>
</div>
</div>
</div>
<p>
<a class="link" href="env.html" title="Chapter 5. The DbEnv Handle">DbEnv</a>
</p>
</div>
<div class="sect2" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h3 class="title"><a id="id1704660"></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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