Mainframe - On a IBM mainframe running the z/OS operating system, how do you create a temporary dataset and why

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On a IBM mainframe running the z/OS operating system, how do you create a temporary dataset and why would you use one?

Total Answers and Comments: 4

Last Update: December 12, 2008 Asked by: katzzz63

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Submitted by: Sushil Nayak

I hope the question is for JCL. Nyhow in JCL you just have to write DSN=&&TEMP instead of DSN=XXXX.X.XXXX.XXX. to create a temporary dataset. To use this temporary dataset just use &TEMP wherever you want the use the temporary data. I hope this answers a part of your question.

As far as usage part is concerned. I believe the temporary datasets are generally used to save space allocation and deallocation time. I mean just take a case where a Procedure generates an ouput now you jus need to send the output via some Mailing Procedure you have, right. So just mail that temp. dataset using &TEMP. At the end of the execution the temporary dataset get removed but if i would have used a permanent dataset then i had to use IEFBR14 to delete the file at the end of JCL so as to deallocate the dataset.

Hope you've got wht i'm trying to say

Above answer was rated as good by the following members:
i_virus

November 15, 2007 08:48:31

Sushil Nayak

RE: On a IBM mainframe running the z/OS operating syst...

I hope the question is for JCL. Nyhow in JCL you just have to write DSN &&TEMP instead of DSN XXXX.X.XXXX.XXX. to create a temporary dataset. To use this temporary dataset just use &TEMP wherever you want the use the temporary data. I hope this answers a part of your question.

As far as usage part is concerned. I believe the temporary datasets are generally used to save space allocation and deallocation time. I mean just take a case where a Procedure generates an ouput now you jus need to send the output via some Mailing Procedure you have right. So just mail that temp. dataset using &TEMP. At the end of the execution the temporary dataset get removed but if i would have used a permanent dataset then i had to use IEFBR14 to delete the file at the end of JCL so as to deallocate the dataset.

Hope you've got wht i'm trying to say

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August 20, 2008 01:59:27

kashi2005

Member Since: March 2006 Contribution: 3

RE: On a IBM mainframe running the z/OS operating system, how do you create a temporary dataset and why would you use one?

&&temp
or
if we remove dsn name u can create tempary data sets

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October 10, 2008 02:35:15

prab99

Member Since: October 2008 Contribution: 2

RE: On a IBM mainframe running the z/OS operating system, how do you create a temporary dataset and why would you use one?

Just to elaborate on what others have said - Small temporary datasets can be directed to VIOs (Virtual I/O using memory) to elminate most of the delays associated with DASDs.

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December 12, 2008 06:10:44

maya007

Member Since: April 2008 Contribution: 6

RE: On a IBM mainframe running the z/OS operating system, how do you create a temporary dataset and why would you use one?

The temporary datasets are created by using the option >

//DD1 DD DSN &&TEMP DISP (NEW PASS DELETE).

The PASS is used instead of CATLG because we need the dataset only for the temporary purpose. The CATLG makes the dataset to get cataloged & creates a vol serial number. The TEMP dataset output can be sent to PDS dataset.

Cheers

Vishwanath.

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