The point IDs for the SJ domain are of the form SJxxxx. The SJ domain includes trace points relating to the creation and management of JVMs, and to the process of setting JVM trace options. There is also a level 2 trace point SJ 0224, which shows you a history of the programs that have used each JVM. The corresponding trace levels are SJ 1, SJ 2 and Exc. For more information about the trace points for the SJ domain, see the CICS® Trace Entries.
The SJ domain also uses trace levels 29-32 to control JVM trace, that is, the trace produced by JVMs in the CICS region, rather than by the SJ domain itself. These levels correspond to trace levels 0, 1, and 2, plus a user-definable trace level, for JVMs. The JVM trace options are defined using a "free-form" 240-character field. "Controlling tracing for JVMs" in Java™ Applications in CICS tells you about the different ways to activate JVM trace and change the JVM trace options, and there is information about the meaning of the JVM trace options in the IBM® Developer Kit and Runtime Environment, Java 2 Technology Edition, Version 1.4.2 Diagnostics Guide, SC34-6358, which is available to download from www.ibm.com/developerworks/java/jdk/diagnosis/.
When you set trace levels 29-32 for the SJ component and activate JVM trace, the JVM trace appears as CICS trace point SJ 4D01. If the JVM trace facility fails, CICS issues the trace point SJ 4D00. Note that JVM trace can produce a large amount of output, so you should normally activate JVM trace for special transactions, rather than turning it on globally for all transactions.
For more information about using traces in problem determination, see the CICS Problem Determination Guide.
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