I’m curious about using CA MIM Resource Sharing within a sysplex. Historically I used it in the days before sysplex, before PDS/E, before other newfangled contraptions that depend on XCF for serialization. We still use MIA for tape allocation across sysplexes and across data centers. What does MIM offer for ENQ within a sysplex?
. . J.O.Skip Robinson Southern California Edison Company Electric Dragon Team Paddler SHARE MVS Program Co-Manager 323-715-0595 Mobile 626-543-6132 Office ⇐=== NEW [email protected] -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Joe Owens Sent: Wednesday, April 05, 2017 9:44 AM To: [email protected] Subject: (External):RLS for catalogs We are experiencing general issues with catalog contention, seeing a lot of SYSIGGV2 enqueue waits. We have shared DASD between multiple LPARS in a sysplex I was wondering if anyone had experience of using RLS for catalogs, as introduced with with Z/OS 2.1? In particular, anyone using this with MIM. MIM has to be initialised before RLS can start (several references to this in APARS). We use RLS with endevor VSAM datasets, and this is not an issue, but as catalog access is so basic to the system, I am thinking we might have to initialise MIM before JES (and have it's parmlib in the master catalog), to avoid a chicken and egg situation. Just wondering if anyone else has considered this. Regards, Joe Owens ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
