How to increase the VSAM file space ?

dhandath · New User Joined: 07 Sep 2006 Posts: 3

Hi All,

Can anyone tell me how to increase the VSAM file space that allocated already ? I created the files with less space CYL(10,10) now i have increase the cylinders to (100,100) to accomodate more data and for future additions.[/b]

CICS Guy · Posted: Tue May 27, 2008 7:55 pm

Without a delete/define, I don't think it is possible.
The ALTER command modifies the attributes of previously defined catalog entries.
But the allocation doesn't seem to be alterable......

dhandath · New User Joined: 07 Sep 2006 Posts: 3

Yes, I decided to do delete/re-define if i don't find any other option. I am searching for some options to do it single command as my file count is bit large (more than 200 files).

dick scherrer · Posted: Wed May 28, 2008 3:56 am

Hello,

Unless all of the existing data is "practice" and can be discarded, make sure to take a backup first. . .

expat · Posted: Wed May 28, 2008 9:56 am

Why not look at ALTER ADDVOL to increase the number of volumes that the cluster can use

dhandath · New User Joined: 07 Sep 2006 Posts: 3

I beleive ADDVOL will not work if we define the files with TRK(10,10) and we try to extend the file by loading huge amt of records into it. I guess, if all the space specified for that dataset in DEFINE statment is allocated, we can't further extend the dataset even by adding volumes to that dataset.

expat · Posted: Wed May 28, 2008 4:02 pm

By adding another volume you get the same, 123 extents I believe, allocated onto a second or third or .............. volume.

However, TRK(10 10) for huge data volumes does seem a little careless to me

Przemyslaw Krekora · New User Joined: 20 Feb 2008 Posts: 9 Location: Poland

Maybe you shuould use IDCAMS- REPRO command to copy the contents of smaller file to new larger