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Running multiple query tasks improves throughput by allowing more than one query task (APPLTASK) to run in parallel. One query task is the default and normal setting. Up to eight are allowed. With high message volumes or with volumes that peak at certain times, you may want to run multiple query tasks.To determine if you can benefit from running multiple query tasks, you can do either of the following:
• View a profile of the number of messages waiting to be processed by the Query Task. To do this, use the Profile Display option of the Administration menu and select QUERY ECB WAIT PROFILE.
• Use the S6BSMFQT (Query Task CPU Usage Analysis) utility, which examines your SMF 26 records and reports its findings. To produce these records, you give a value greater than zero to the SMF26INTERVAL Data Object Broker parameter.We recommend running multiple query tasks if your queue shows more than one transaction waiting for the query task for a significant amount of time. The number of query tasks is set using the MAXQUERY Data Object Broker parameter. If you need advice, contact TIBCO Support through our web site at http://support.tibco.com.Chapter 5, Interpreting Data Object Broker SMF Records for a description of the SMF 26 records.TIBCO Object Service Broker for z/OS Installing and Operating for information on the Administration menu.TIBCO Object Service Broker for z/OS Utilities for a description of the S6BSMFQT (Query Task CPU Usage Analysis) utility.TIBCO Object Service Broker Parameters for a description of the Data Object Broker parameters.
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Copyright © TIBCO Software Inc. All Rights Reserved |