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How to debug svc 56


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Jimy Carol

New User


Joined: 31 Aug 2012
Posts: 25
Location: Australia

PostPosted: Fri Apr 26, 2013 1:57 pm
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Hello All ,

My assembler program is stuck in SVC 56 , the program basically tries to open a PDS and is trying to do below :
Validate the allocation of the catalog PDS
Serializes the I/O

In serialize section there is SVC 56 which upon called is stuck forever .

I dont know how to debug it and possible cause of this problem .

Any pointers will be highly appreciated .

Regards ,

Carol
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enrico-sorichetti

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Joined: 14 Mar 2007
Posts: 10873
Location: italy

PostPosted: Fri Apr 26, 2013 2:06 pm
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open another TSO session and investigate about the outstanding ENQs
for example using TSO ISRDDN ENQ
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