In Ring mode, all systems always have all of the ENQ information for all of the other systems. In Star mode, each system has only its own ENQ information.
The XSYS parameter of GQSCAN was introduced with Star mode so that a GQSCAN user could optionally avoid the cost of signalling other systems if their information was not needed by that user. XSYS=YES would have been chosen as the default to avoid an incompatibility in GQSCAN operation. The ISGQUERY service was introduced after Star mode, and since the GATHERFROM option was their from the beginning, compatibility with prior ISGQUERY behavior was not a factor in choosing the default. Jim Mulder z/OS Diagnosis, Design, Development, Test IBM Corp. Poughkeepsie NY > Curiously, although there are performance warnings for both macros > about searching the cross system scope, XSYS=YES is the defaul for > GQSCAN, but GATHERFROM=SYSTEM (i.e. not SYSPLEX) is the default for > ISGQUERY. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
