dbatools

0.9.380

bin/XEtemplates/Count Query Locks.xml

                                <event_sessions xmlns="http://schemas.microsoft.com/sqlserver/2008/07/extendedeventconfig">

  <event_session name="Count Query Locks" maxMemory="4" eventRetentionMode="allowSingleEventLoss" trackCausality="true" dispatchLatency="30" maxEventSize="0" memoryPartitionMode="none">

    <templateCategory>

      <!-- _locID_text="templateCategory" _locComment = "" -->Locks and Blocks</templateCategory>

    <templateName>

      <!-- _locID_text = "templateName" _locComment = "" -->Count Query Locks</templateName>

    <templateDescription>

      <!-- _locID_text = "templateDescription" _locComment = "" -->Counts the number of locks acquired by each query based on the query_hash value. You can use this template to identify the most lock intensive queries for investigation and tuning.</templateDescription>

    <event package="sqlserver" name="lock_acquired">

      <action package="sqlserver" name="query_hash" />

      <predicate>

        <and>

          <leaf>

            <comparator name="greater_than_uint64" package="package0"></comparator>

            <event name="lock_acquired" package="sqlserver" field="database_id"></event>

            <value>4</value>

          </leaf>

          <leaf>

            <comparator name="equal_boolean" package="package0"></comparator>

            <global name="is_system" package="sqlserver"></global>

            <value>false</value>

          </leaf>

        </and>

      </predicate>

    </event>

    <target package="package0" name="histogram">

      <parameter name="filtering_event_name" value="sqlserver.lock_acquired" />

      <parameter name="source" value="sqlserver.query_hash" />

    </target>

  </event_session>

</event_sessions>