Serviceability Aids › Enhanced System Tracing › Trace Tables and Entry Types

Trace Tables and Entry Types

Starting with Version 18.0 you can allocate two types of system-wide trace tables: a system trace table and an adjunct trace table. The two types of tables are used as follows:

• The system trace table records the standard system trace (SYSTRACE) entries. As in prior releases, standard system tracing is enabled using either the SYSGEN SYSTEM statement SYSTRACE parameter or the DCMT VARY SYSTRACE command. If system tracing is enabled dynamically and no system trace table exists, one is allocated automatically.
• Extended trace entries are variable in length and are generated only if certain CSA flags are turned on using either SYSIDMS parameters or the DCMT VARY CSAFLAGS command. Extended trace entries are recorded in the adjunct trace table if one exists; otherwise, they are recorded in the system trace table. If neither table exists, extended trace entries are not generated even if the CSA flags are on.