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mchanapa
New User
Joined: 17 Nov 2011
Posts: 36
Location: India
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Hi . .
Can you please tell me what will happen if we bounce the CICS region to CICS memory area for load modules, CICS tables.
Please tell mw what exactly will happen in CICS bounce and what is the secnario will go for it?
Regards,
Kishore. |
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expat
Global Moderator
Joined: 14 Mar 2007
Posts: 8797
Location: Welsh Wales
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Explain exactly what you mean by a CICS bounce.
My version of thoughts is that perhaps you mean stopping CICS and then starting CICS. If this is what you also mean, what do you think will happen ? |
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Garry Carroll
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Joined: 08 May 2006
Posts: 1193
Location: Dublin, Ireland
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| mchanapa wrote: |
Hi . .
Can you please tell me what will happen if we bounce the CICS region to CICS memory area for load modules, CICS tables.
Please tell mw what exactly will happen in CICS bounce and what is the secnario will go for it?
Regards,
Kishore. |
This looks like a follow-on to your earlier thread about refreshing load modules. I've come across the term 'bounce' as referring to bringing the (sub)system 'down-then-up' and presume this is what you mean.
Restarting the CICS region will rebuild the PPT with the disk address of the programs. Programs will then be loaded into memory a tstartup if
RESident or as referenced.
Ga RR y |
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Bill O'Boyle
CICS Moderator
Joined: 14 Jan 2008
Posts: 2501
Location: Atlanta, Georgia, USA
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Bounce (Vernacular) is synonymous with Recycle, but has its subtilties -
A) If the region is restarted as EMER, all the resources will be restored to the way they were before the region was brought down.
B) If the region is brought down via a CEMT PERFORM SHUT (can be abbreviated), then the PLT-SD programs are executed and the region should come down clean. A subsequent restart as AUTO will renew (initialize) all the resources.
C) If the region is brought down via a CEMT PERFORM SHUT IMMEDIATE (can also be abbreviated), then the execution of the PLT-SD programs is bypassed and the region comes down without their execution, which may or may not be a good thing. Because of this, it's wise to restart the region as COLD.
D) If the region is brought down via an MVS CANCEL, it needs to be restarted as COLD. An MVS CANCEL is your last choice and recommended ONLY when all other methods have failed.
Read about START=WARM and/or START=INITIAL and see if they make additional sense to you....
HTH....
Mr. Bill |
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Garry Carroll
Senior Member
Joined: 08 May 2006
Posts: 1193
Location: Dublin, Ireland
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| Bill O'Boyle wrote: |
Bounce (Vernacular) is synonymous with Recycle, but has its subtilties -
A) If the region is restarted as EMER, all the resources will be restored to the way they were before the region was brought down.
B) If the region is brought down via a CEMT PERFORM SHUT (can be abbreviated), then the PLT-SD programs are executed and the region should come down clean. A subsequent restart as AUTO will renew (initialize) all the resources.
C) If the region is brought down via a CEMT PERFORM SHUT IMMEDIATE (can also be abbreviated), then the execution of the PLT-SD programs is bypassed and the region comes down without their execution, which may or may not be a good thing. Because of this, it's wise to restart the region as COLD.
D) If the region is brought down via an MVS CANCEL, it needs to be restarted as COLD. An MVS CANCEL is your last choice and recommended ONLY when all other methods have failed.
Read about START=WARM and/or START=INITIAL and see if they make additional sense to you....
HTH....
Mr. Bill |
Bill,
I disagree with points C and D. In both of these cases, there may be uncommitted UOWs which need to be resolved by performing an EMER start.
Garry. |
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