Changing the default extended minidump (XDUMP) data set name pattern (XDUMPDSN)

An XDUMP is a data set that is tightly coupled with a fault entry, containing pages of storage in addition to those in the minidump.

The default XDUMP data set name pattern is:

IDIXDPHQ.XDUMP.&SYSNAME..D&YYMMDD..T&HHMMSS..S&SEQ.

Use the XDUMPDSN setting in the IDIOPTLM configuration-options module to change the pattern for naming extended minidump data sets.

The data set name pattern should include symbolic values to ensure that each allocated data set is unique. For example:

CL100'IDIHLQ.XDUMP.&&SYSNAME..D&&YYMMDD..T&&HHMMSS..S&&SEQ.'

For additional information about the use of symbols, see IDIOPTLM data set name symbol substitution.

One or more data set qualifiers must be used with the IDIXDUMP_HLQ XFACILIT profile to grant access to users who need to create the data sets. For additional information, see Using the XFACILIT resource class for XDUMP data sets.

If the high-level qualifier specified in the XDUMPDSN option is NULLFILE, then Fault Analyzer will not allocate an extended dump data set. The result of this is that user storage areas not directly involved in the event-related source line or statement might be missing from reanalysis of the fault entry, the DeferredReport option might be overridden if the MaxMinidumpPages option value is exceeded (potentially causing severe performance issues, especially under CICS), or additional space might be required in the TSO region for interactive reanalysis.