How to know Vsam is initialized or not

satya12 · New User Joined: 25 Apr 2006 Posts: 32 Location: India

Hi

I want to know whether a VSAM file is initialized or not?Is there any way to know this by looking at its characteristics.

Thanks

DavidatK · Posted: Tue Apr 25, 2006 5:54 am

satya12,

The way we initialize VSAM files (only way I know) is to INSERT/DELETE a record.

satya12 · New User Joined: 25 Apr 2006 Posts: 32 Location: India

Hi Dave

Thanks for the reply.One observation from my side is,for some of the VSAM files the statistics are showing some no. for no. of records but records updated,inserted and deleted are zeros.I think these are initialized as im not having any problems in accessing them in input mode.

Thanks
Satya

DavidatK · Posted: Tue Apr 25, 2006 7:41 pm

Satya,

Yes, this is an initialized file. The file was defined, repro'd into and has been in an unchanged state.

Dave

BruceC · Posted: Wed Apr 26, 2006 2:55 am

One definition of an initialized VSAM file is that the HI Uesd Relative Byte Address will read zero in a LISTCAT.

Here is the HI Used RB from a very active VSAM KSDS dataset.
HI-U-RBA--------54743040

A LISTCAT of a newly created VSAM dataset will show 0.

satya12 · New User Joined: 25 Apr 2006 Posts: 32 Location: India

I knew abt that HI-U-RBA concept but i was not sure whether its correct or not.Now ur reply made me feel that it is roght.

Thank you very much guys for your replies.

Satya