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Open Flat File status using REXX

 
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Sridhar R

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Joined: 11 Dec 2010
Posts: 20
Location: India

PostPosted: Fri Sep 07, 2012 1:24 pm    Post subject: Open Flat File status using REXX
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I have a flat file which i'm reading in my REXX code. Here before opening that file I want to check whether that the same file is using by some other resource(user). Could anyone help me??

For Eample :

I have file name called 'TEST.SMS.FILE'

user_list = 'TEST.SMS.FILE'

"ALLOC DA('"user_list"') F(ulist) OLD"
queue 'xxxxxxxxxxx'
queue 'yyyyyyyyyyy'

"EXECIO "QUEUED()" DISKW ulist (FINIS"

But before I'm into this file I want to check whether the same file is using by any user/resource.
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enrico-sorichetti

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Joined: 14 Mar 2007
Posts: 10210
Location: italy

PostPosted: Fri Sep 07, 2012 1:45 pm    Post subject: Reply to: Open Flat File status using REXX
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in IT terminology and consistency are essential for effective communication

You describe Your <requirement> as READ,
but then Your code shows a write.

review Your understanding of dataset disposition both for JCL-DD and ALLOC

using OLD will automatically let You have the dataset under exclusive control
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Pedro

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Joined: 01 Sep 2006
Posts: 2025
Location: Silicon Valley

PostPosted: Fri Sep 07, 2012 9:15 pm    Post subject: Reply to: Open Flat File status using REXX
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Quote:
I want to check whether that the same file is using by some other resource(user)


Depending on your skill, use either
1. the QUERYENQ service of ISPF. The QNAME is SYSDSN and the RNAME is your fully qualified dataset name.

or
2. use the GQSCAN macro. See "MVS Assembler Services Guide"
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