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DYNAMNBR

 
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die7nadal

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Joined: 23 Mar 2005
Posts: 156

PostPosted: Sat Jul 02, 2005 1:16 am    Post subject: DYNAMNBR
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Can any one gimme any practical reason when we need DYNAMNBR parm in the EXEC statement. I did refer the JCL reference, but cud not get the reason why they use this parm.
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YOGENDRA SHINDE

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Joined: 02 Jul 2005
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PostPosted: Sat Jul 02, 2005 1:21 pm    Post subject:
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icon_smile.gif Hi , This is Yogendra.
You normally specify all the data sets you need with the DD statements in your JCL for a step, if you write programs that dynamically allocate data sets, you should code the DYNAMNBR parameter on the EXEC statement so the system can acquire the resources just before their use and release themm immediately after use.
You code //stepname EXEC DYNAMNBR=n
The n tells the system how many data set allocations to hold in aniticipation of reuse.( The system actually holds n plus the total number of the DD statements used by the step.
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die7nadal

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PostPosted: Sat Jul 02, 2005 8:32 pm    Post subject: Re: DYNAMNBR
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Thanks a lot Yogendra.
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