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<pre>public class <span class="typeNameLabel">ReplicaConsistencyException</span>
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extends <a href="../../../../com/sleepycat/je/OperationFailureException.html" title="class in com.sleepycat.je">OperationFailureException</a></pre>
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<div class="block">This exception is thrown by a Replica to indicate it could not meet the
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consistency requirements as defined by the
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<code>ReplicaConsistencyPolicy</code> in effect for the transaction, within
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the allowed timeout period.
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<p>
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A Replica will typically keep current with its Master. However, network
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problems, excessive load on the Master, or Replica, may prevent the Replica
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from keeping up and the Replica may fall further behind than is permitted by
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its consistency policy. If the Replica cannot catch up in the time defined
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by its <code>ReplicaConsistencyPolicy</code>, it will throw this exception
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from the <a href="../../../../com/sleepycat/je/Environment.html#beginTransaction-com.sleepycat.je.Transaction-com.sleepycat.je.TransactionConfig-"><code>Environment.beginTransaction</code></a> method, thus preventing the transaction from
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accessing data that does not meet its consistency requirements.
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<p>
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If this exception is encountered frequently, it indicates that the
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consistency policy requirements are too strict and cannot be met routinely
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given the load being placed on the system and the hardware resources that
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are available to service the load. The exception may also indicate that
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there is a network related issue that is preventing the Replica from
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communicating with the master and keeping up with the replication stream.
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<p>
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The application can choose to retry the transaction, until the underlying
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system problem has been resolved. Or it can try relaxing the consistency
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constraints, or choose the <a href="../../../../com/sleepycat/je/rep/NoConsistencyRequiredPolicy.html" title="class in com.sleepycat.je.rep"><code>NoConsistencyRequiredPolicy</code></a> so that the
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constraints can be satisfied more easily.
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For example, in a <a href=
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"../../../../../ReplicationGuide/lifecycle.html#twonode"> two node
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replication group</a>, if the primary goes down, the application may want
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the secondary node to continue to service read requests, and will lower the
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consistency requirement on that node in order to maintain read availability.</div>
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<dt><span class="seeLabel">See Also:</span></dt>
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<dd><a href="../../../../com/sleepycat/je/ReplicaConsistencyPolicy.html" title="interface in com.sleepycat.je"><code>ReplicaConsistencyPolicy</code></a>,
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<a href="../../../../../ReplicationGuide/consistency.html"
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target="_top">Managing Consistency</a>,
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<a href="../../../../serialized-form.html#com.sleepycat.je.rep.ReplicaConsistencyException">Serialized Form</a></dd>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../com/sleepycat/je/rep/ReplicaConsistencyException.html#ReplicaConsistencyException-java.lang.String-com.sleepycat.je.ReplicaConsistencyPolicy-">ReplicaConsistencyException</a></span>(java.lang.String message,
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<a href="../../../../com/sleepycat/je/ReplicaConsistencyPolicy.html" title="interface in com.sleepycat.je">ReplicaConsistencyPolicy</a> consistencyPolicy)</code> </td>
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<td class="colFirst"><code><a href="../../../../com/sleepycat/je/ReplicaConsistencyPolicy.html" title="interface in com.sleepycat.je">ReplicaConsistencyPolicy</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/sleepycat/je/rep/ReplicaConsistencyException.html#getConsistencyPolicy--">getConsistencyPolicy</a></span>()</code>
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<div class="block">Returns the Replica consistency policy that could not be satisfied.</div>
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<h4>ReplicaConsistencyException</h4>
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<pre>public ReplicaConsistencyException(java.lang.String message,
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<a href="../../../../com/sleepycat/je/ReplicaConsistencyPolicy.html" title="interface in com.sleepycat.je">ReplicaConsistencyPolicy</a> consistencyPolicy)</pre>
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<h4>getConsistencyPolicy</h4>
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<pre>public <a href="../../../../com/sleepycat/je/ReplicaConsistencyPolicy.html" title="interface in com.sleepycat.je">ReplicaConsistencyPolicy</a> getConsistencyPolicy()</pre>
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<div class="block">Returns the Replica consistency policy that could not be satisfied.</div>
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<dl>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the Replica consistency policy</dd>
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<div class="aboutLanguage"><b>Berkeley DB Java Edition</b><br><font size=\"-1\"> version 7.5.11</font>
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