> -----Original Message-----
> From: IBM Mainframe Discussion List 
> [mailto:[email protected]] On Behalf Of Bob Shannon
> Sent: Wednesday, December 02, 2009 10:25 AM
> To: [email protected]
> Subject: Re: question on STORAGE function - TCB may become 
> non-dispatchable?
> 
> As far as I know, Storage just uses a different mechanism 
> (PC) to invoke the same code that Getmain/Freemain uses. 
> Since the PC runs under the TCB that invokes it, I don't 
> understand why anyone thinks there will be a wait of any 
> type. Since Storage doesn't suffer an SVC interrupt, it's 
> probably better for the CICS transaction than Getmain/Freemain.
> 
> Bob Shannon
> Rocket Software

I think the "problem" is my orientation of being a z/OS type programmer rather 
than a CICS programmer. "wait" in my mind implies making the TCB 
non-dispatchable by the z/OS dispatcher. "wait" to a CICS person may mean 
something like "cause other tasks to not be dispatched because an EXEC CICS 
type function is not done in a timely manner". This latter can cause an AICA, 
but could make the users consider the system to be "down" due to poor response 
time. I.e. other CICS tasks are waiting to be dispatched due to the CPU greed 
of the currently dispatched CICS task.

--
John McKown 
Systems Engineer IV
IT

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