The IBM default for MIDAW is enabled. Did you updated PARMLIB?
For IECIOSxx.
MIDAW:
Use the MIDAW statement to enable or disable the MIDAW facility on a
system. If no MIDAW statement is specified, the MIDAW facility will be
enabled on the system by default.
Subtopics
Parameters for MIDAW
Parameters for MIDAW:
MIDAW=YES|NO
Specifies whether the MIDAW facility is enabled or disabled on a
system.
Default: YES
I feel this is reasonable now. I objected when MIDAW support was
introduced and it defaulted to YES as we were a site that hit some
APARable problems related to MIDAW.
If you want MIDAW turned off at IPL updated IECIOS00 to reflect MIDAW=NO
I am currently using MIDAW and HYPERPAV without any problems.
BROWSE SYS1.PARMLIB(IECIOS00)
Command ===>
MIDAW=YES
HYPERPAV=YES
I believe that SyncSort constructs it's channel programs according to
what IOS dictates is the currently allowed road rules and handles MIDAW
enablement being changed dynamically. I don't know how they could do
otherwise. IOS and the hardware are in charge here they just submit a
channel program and if MIDAW is disabled it won't work.
We are also running SyncSort 1.3 with good results.
We have primarily IBM DASD 2107 and 2105.
Best Regards,
Sam Knutson, GEICO
System z Performance and Availability Management
mailto:[EMAIL PROTECTED]
(office) 301.986.3574
"Think big, act bold, start simple, grow fast..."
-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On
Behalf Of Mark Jacobs
Sent: Tuesday, July 29, 2008 7:06 AM
To: IBM-MAIN@BAMA.UA.EDU
Subject: Re: MIDAW and Dynamic Activation
Lizette Koehler wrote:
> I have a strange problem going on right now.
>
> We are in the process of upgrading our EMC dasd from DMX3000 to
DMX4500. We
> have just recently got the DMX4500 connect but not setup to be used.
>
> For some reason we are having MIDAW activated on our systems that can
> support MIDAW. I did not issue a SETIOS MIDAW=YES so I am not sure
how it
> is getting turned on.
>
> So I issue the SETIOS MIDAW=NO, it says it is disabled.
>
> However when one specific Syncsort Job runs, the Output shows that
MIDAW was
> used even though the D IOS,MIDAW shows disabled
>
> Has anyone seen that?
>
> Lizette
>
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>
>
It wouldn't surprise me if Syncsort turns on MIDAW for its I/Oif the
processor supports it regardless of the IOS setting.
--
Mark Jacobs
Time Customer Service
Tampa, FL
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