//STEP010.RESTART DD VOL=REF=

meenakshi_forum · Active User Joined: 27 May 2008 Posts: 65 Location: India

What does this step mean in overide
//STEP010.RESTART DD VOL=REF=

where all do we use it ?

Thanks.

dick scherrer · Posted: Mon Jul 21, 2008 9:50 pm Post subject:

Hello,

If you post output file 2 from a run that has this override, we can clarify using your "real" process.

Specifying no value for a parameter "unsets" that parameter, so where the jcl specifies a referback, the override removes it.

meenakshi_forum · Active User Joined: 27 May 2008 Posts: 65 Location: India

//STEP010 EXEC PGM=IEFBR14
//RESTART DD DISP=(NEW,CATLG,DELETE),
// UNIT=SYSDA,SPACE=(TRK,(1)),
// VOL=REF=PROD.RSTART,
// DSN=&PROD1..AGH.PROTECT.RESTART.SNDD9097K

dick scherrer · Posted: Tue Jul 22, 2008 12:03 am Post subject:

Hello,

The jcl step you posted allocates the named dataset on the same volume the RSTART DD is allocated to in the PROD step.

The override removes the referback to the specific volume, so any eligible SYSDA volume might be used for the allocation.

meenakshi_forum · Active User Joined: 27 May 2008 Posts: 65 Location: India

Thanks, trying to understand.

Do you mean in the Test JCL when we give overide then it is not using the SYSDA volume specified in the Production Proc rather it is using the volume whichever is available then..

Please correct if i am wrong.

gcicchet · Senior Member Joined: 28 Jul 2006 Posts: 438

Hi,

actually if your volumes are SMS managed, the refer back is superflous as it will not make any difference, SMS will place the dataset on whichever volume it decides to place the dataset on.

Gerry