Thompson, Steve wrote:
-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On
Behalf Of Patrick O'Keefe
Sent: Wednesday, March 26, 2008 3:23 PM
To: IBM-MAIN@bama.ua.edu
Subject: SVCDUMP processing question
I need remedial training in MVS disagnostic techniques. :-(
I seem to have combined the concepts of QUIESCE yes/no and SYNCH /
ASYNCH. I sort of understand that QUIESCE=YES protects common storage
during dump capture by limiting the dispatching of other address spaces
(and probably have the details horribly
wrong). What does SYNCSVCD do? Something similar with multiple
taks within a single address space?
I know QUIESCE=YES has caused us all kinds of performance problems in
the past so we gone to NO everywhere we could find the option. However,
we still are getting synchronous SVC dumps taken. I'm not sure we even
have the option of setting that except for SLIP dumps. Is that a
problem?
<SNIP>
At least two places to look: MVS Authorized Services Guide and MVS
System Commands discusses the SYNC aspects.
QUIESCE is a new one on me, and I can't find anything for such an option
with a dump.
Under SDUMP[X]...
,QUIESCE=YES
,QUIESCE=NO
Specifies that the system is to be set nondispatchable until the contents of the
SQA and the CSA are dumped (YES), or that the system is to be left dispatchable
(NO). If the SDATA parameter does not specify SQA or CSA, the QUIESCE=YES
request is ignored.
Bob
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