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Harvey

I'm writing a tcp/ip application to upload weekly files from Windows to MVS VSAM RRDS files. I want to dynamically delete/create the VSAM RRDS file in my MVS client. According to the documentation, SVC99 can only be used to dynamically allocate an existing VSAM dataset. Is it possible to dynamically delete/create a VSAM file? If so how?

kolusu · Posted: Wed Nov 10, 2004 1:18 pm Post subject:

harvey,

Can't you just generate the IDCAMS control cards dynamically which will delete and re-create the vsam clusters?

If you let us know the requirement , may be we can suggest an alternative approach

Kolusu
_________________
Kolusu
www.linkedin.com/in/kolusu

Harvey · Posted: Wed Nov 10, 2004 2:01 pm Post subject:

I need to upload a large number of big files each week to MVS. The current method is to FTP the files to sequential files and then run IDCAMS to delete and deifne the VSAM RRDS files and then REPRO the sequential files to VSAM RRDS. Due to the large number and size of these files I don't want to have both a sequential and VSAM version of the same file. The time required for this is also significant. The size of the files can also very from week to week. So I'd like to simplify the creation of the VSAM RRDS files in a tcp/ip client that I have. I already have the client/server code for uploading my files, I now need to know how to create the VSAM RRDS file dynamically. After that I just have to load the VSAM file which is simple.

kolusu · Posted: Wed Nov 10, 2004 2:11 pm Post subject:

Harvey,

I am confused with the usage "dynamically create VSAM Clusters". Do you want to create the vsam clusters with a different name every week? or is the vsam cluster name the same every week?

Harvey · Posted: Wed Nov 10, 2004 2:21 pm Post subject:

The dataset names will not change from week to week. The size of the files may change so the VSAM RRDS file must be deleted and redefinesd. There can be up to 300 files, so I don't want to have to define these through JCL. Also I might only be uploading a subset of files so I need to automate which ones to delete and redefine. I want to do this through code, not JCl so I have full control.

kolusu · Posted: Wed Nov 10, 2004 2:29 pm Post subject:

harvey,

Generate the JCL for deleting and loading the selective VSAM clusters on client side and just FTP the JCL with Filetype=jes. check this link for an example.

http://www.mvsforums.com/helpboards/viewtopic.php?t=931&highlight=filetype+jes

Hope this helps...

Cheers

Kolusu
_________________
Kolusu
www.linkedin.com/in/kolusu