15.3. IMS and the MVS system trace table
While this was discussed previously, it is a good idea to remind ourselves of the benefits of allocating a larger System Trace table than the MVS default of 64K.
The MVS System Trace table size can be set by issuing the MVS TRACE ST,999K command or by including this command in the COMMNDxx member is SYS1.PARMLIB. The benefit of setting this is SYS1.PARMLIB(COMMNDxx) ensures that the trace table is correctly sized at IPL time.
The system trace table will be included in the SVC dump provided the SDATA TRT option is specified.
15.3.1. IMS and the MVS master trace table
The master trace table is an instorage copy of the MVS SYSLOG (system log). The default size is 24K, which will hold approximately 336 messages. ...
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