I believe JES2 uses physical reserves on entire volume when accessing
HASPCKPT datasets and depending on your JES PARMLIB member may hold it
for a significant time -- not a good dataset type to put on a SYSRES
shared with other systems. Others may be able to suggest JES PARMLIB
changes to shorten the hold time, but I would move all HASPCKPT datasets
to volumes that have minimal shared access with another system, or at
very least off volumes like SYSRES that contain many
performance-critical datasets needed by all systems sharing that SYSRES.
I suspect the usual z/OS manual recommendations are to put HASPCKPT on a
volume by itself, but a sufficiently quiet volume is good enough.
JC Ewing
On 01/03/2012 02:13 AM, jagadishan perumal wrote:
Hi Lizette,
Apology for not being precise.
Datasets found in SYSRES are :
are some BCP related datasets , assembler datasets,language environment
datasets,IBM book manager datasets First failure Support technology(FFST)
datasets are found.
During This Situation when I do : /D GRS,C It does really produces any
information about Volume or Dataset Contention. As per Mark advise I did
TSO RMFMON and Found some SYS1.HASCKPT datasets used by JES2, some User Job
using their Assigned volumes.
Jags
On Tue, Jan 3, 2012 at 1:21 PM, Lizette Koehler<stars...@mindspring.com>wrote:
Hi All,
One thing I have noticed from the report is that most of the user ID are
the reason for
volume contentions.
Name Reason Critical val. Possible cause or
action
DOV0053 DEV -Z18RS1 93.0 % delay May be reserved by another
system.
DOV0061 DEV -Z18RS1 92.0 % delay May be reserved by another
system.
DOV0065 DEV -Z18RS1 91.0 % delay May be reserved by another
system.
Is it something I need to look into user's Proc ? Could anyone please
throw some light
on this.
Jags
Jags,
Have you tried to see what datasets are open and enq'd during this time?
What research have you done? What datasets are on your SYSRES volume? You
have not answered these qestions.
Have you issued a D GRS,C to see if anything is obvious?
Lizette
....
--
Joel C. Ewing, Bentonville, AR jcew...@acm.org
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