Joined: 14 Mar 2007 Posts: 8657 Location: Back in jolly old England
Did this program work before the change ?
You say that the record length has increased, yet the example DEFINE CLUSTER RECSZ bears no semblence at all to the record length stated. So you need to post the real cluster definition, not what you think that we should see.
Were there any standard IDC or IAM messages issued (This looks like a IDP IAM owned file) so did IAM issue any messages.
How big did the file get, how many extents, how many volumes, how many records were added / changed ?
Also, User abends are usually coded into a program and are site specific, have you read any documentation regarding the product / program to see if this is the case.