9.21.2 Errors occurred in a performance screen
This point describes an analysis procedure when a performance related failure occurs. For example, certain processes require time. The performance related problem might occur when starting an application or when executing the application.
When you start an application, if any performance related problem occurs, contact maintenance personnel. When you execute the application, and if any performance related problem occurs, specify the location of the problem as per the following procedure:
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Checking PRF trace.
Specify the location where the process takes time from the contents of a PRF trace. Specify whether the cause of a failure is in the user-implemented location or in the Cosminexus JPA Provider. Modify the application if there is any problem in the user-implemented location. When the processes in the internal process of Cosminexus JPA provider take time, contact maintenance personnel.
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Checking operation logs
For checking the issued SQL, check operation logs.
For example, you can reference the issued SQL and confirm whether it is relevant to the following case or not:
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JOIN operation is executed repeatedly by reading the entity because JOINED is used in inheritance strategy.
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The entity managed by collection is operated, and therefore, SELECT is generated for each element with extension.
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For details on the operation log output to Cosminexus JPA provider, see 16.1.1 Cosminexus JPA Provider operation log.