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COMM CLRnnn (Reset Alternate Output Data Sets)

In z/OS, when running MUF with a SYSOUT MUF startup option specified, you can use CLRML, CLRCBS, CLRSQL, CLRDD, and CLRDST (DBUTLTY COMM functions or console commands) to reset a PXXML, PXXCBS, PXXSQL, PXXDD, or PXXDST data set that has become full during processing.

Note: If you do not want diagnostic and tracing information routed to the Statistics and Diagnostics Area (PXX), you can use the SYSOUT MUF startup option to specify alternate output processing. The SYSOUT parameters define output for Master List snaps, CBS traces, SQL traces, CA Datacom/DB CA Datacom Datadictionary traces, and DST traces. See the CA Datacom/DB Database and System Administration Guide for details.

In response to a CLRML, CLRCBS, CLRSQL, CLRDD, or CLRDST, the specified SYSOUT data set is reset, that is, closed, deallocated, and reallocated (in processing the reset function, the current PXX data set is deallocated and assigned to the class specified in the SYSOUT MUF startup option). Each of the five can generate a report.