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Z_Ubavelski
New User
Joined: 05 Oct 2014
Posts: 2
Location: Switzerland
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Hi mainframe community,
I have a problem in PL/I. I want to use the same dataset as both input and output.
At first I want to write to the dataset as output. In case of abend I want to read the same file and use the input.
Thanks in advance.
Regards,
Zoran |
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prino
Senior Member
Joined: 07 Feb 2009
Posts: 1323
Location: Vilnius, Lithuania
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| Code: |
| open file(whatever) input; |
and
| Code: |
| open file(whatever) output; |
Or use dynamic allocation available in Enterprise PL/I.
The far bigger problem is that your dataset may suffer from integrity problems after an abend. There is no way of knowing if the last record in the dataset is actually the last record that you processed.
BAD DESIGN! BAD, BAD, BAD! |
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expat
Global Moderator
Joined: 14 Mar 2007
Posts: 8797
Location: Welsh Wales
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Totally agree with Prino. That is one of the worst ideas ever to hit the IT industry over 40 years ago, and yet people still think about doing it.
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Z_Ubavelski
New User
Joined: 05 Oct 2014
Posts: 2
Location: Switzerland
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Hi all,
thank you for your help. I was able to solve the problem.
Regards,
Zoran |
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