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How to use VSAM files in assmbler

PostPosted: Tue Feb 22, 2011 4:43 pm
by vikram G
Hi All,

Can anyone please give me a idea about how to use VSAM files in assmbler? I have some aidea how to use flat files?
Its urgent?

Re: vsam files.

PostPosted: Tue Feb 22, 2011 4:48 pm
by enrico-sorichetti
we do not do urgent,
and accessing vsam thru assembler is not for the faint of hart or inexperienced people and itself cannot be done urgently!
z/OS V1R10.0 DFSMS Macro Instructions for Data Sets
at http://publibz.boulder.ibm.com/cgi-bin/ ... 0122165044
will tell all You might want to know,

Re: vsam files.

PostPosted: Tue Feb 22, 2011 4:57 pm
by vikram G
Thanks for your reply. I think I may get all info in that link. Thanks for your timely help. Sorry to make you urgent. :)

Re: How to use VSAM files in assmbler

PostPosted: Fri Nov 11, 2011 1:08 am
by BillW
You use the ACB to generate access control block. Then you use RPL to generate specific requests. I have done this in VM a long time ago(92). Not really all that hard. Like anything else, it helps to have the manuals. My objective was to speed up the load of a KSDS file containing 40 million records. I chained a bunsh of RPLs and sent it off all at once. It did speed up the process and cut the cpu times.