Paul,
IMHO, your Test system should fully participate in your GRS star and MIM -
configuration, since you said that you are sharing all DASD (and tape
drives, I suspect). This should prevent those ENQ issues that you are
seeing.
And I do hope, that MIM is only used for allocation control of shared tape
drives (and not also processing ENQs).
I've been running a Prod. + Test environment like this for years and had no
issues. Of course, one _must_ take care when IPLing the Test system, to
correctly connect it to the GRS and MIM-plex and to issue the proper
commands to disconnect when shutting down the Test system. Not doing this
right will make the phones ring!
Regards,
Ulrich Krueger
-Original Message-
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf
Of Beesley, Paul
Sent: Thursday, May 08, 2008 10:02
To: IBM-MAIN@BAMA.UA.EDU
Subject: GRS/MIM contention problem
Good day
I am struggling with a problem and would appreciate suggestions.
Customer has 3 systems, 2 production in a sysplex ( with several other
customer systems ) - GRS STAR and MIM, shared JES.
Other system is a test system in its own monoplex, in the same MIMPLEX
as the other two systems; GRS=NONE, GRSRNL=EXCLUDE, GRSCNF=00, in its
own JES MAS.
All DASD is shared between the 3 systems.
When I first IPL the test system its ok then I start seeing this :
- Logger offload delays
- Enqueues on SYSIGGV2/catalog.name
- Enqueues on ARCENQG/ARCMCDS
- Enqueues on SYSZRAC2/racf.database
Also had a job needing a tape issue IECTMS9 then wait for an hour before
recognising the tape ( Virtual tape in 3592 silo ) - only sprang into
life when test system was shut.
Tired after a long day of looking and finding nothing so any help
welcome. Its IPL'ed OK before ... only change now is a bit of
maintenance to CA-View...
Thanks
Paul Beesley
Mainframe and AS400 support
Managed Operations
Atos Origin
Direct: +44 (0)1202 542489
Mobile: +44 (0)7890 723369
Victoria House
Bournemouth
BH1 2NF
[EMAIL PROTECTED]
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