IST496E
function_name FUNCTION INOPERATIVE DUE TO ABEND

Explanation

VTAM® issues this message when several consecutive abnormal terminations have caused the VTAM function function_name to become inoperative.

function_name can be one of the following:
  • DYNAMIC CDRSC DELETION
  • I/O RESPONSE MONITOR
  • I/O RESPONSE TIMEOUT

System action

Processing continues. The cause of the repeated abends might also result in the failure of other VTAM operations.

Operator response

Save the system log for problem determination.
  • If function_name is DYNAMIC CDRSC DELETION, monitor the usage of dynamic cross-domain resources (CDRSCs) with the DISPLAY ID=ISTCDRDY,SCOPE=ALL command. Issue a VARY INACT command to delete CDRSCs that have no active sessions.
  • If function_name is I/O RESPONSE MONITOR, monitor I/O response activity with the DISPLAY PENDING command.
  • If function_name is I/O RESPONSE TIMEOUT, assess the importance of the pending I/O that is not receiving a response to determine whether VTAM should be restarted.

System programmer response

You can correct any resulting failures of VTAM operations individually, but you might have to halt and restart VTAM if there are too many failures.

Routing code

8

Descriptor code

3