Assembly / HLASM · Message ID
What does IEC161I VSAM OPEN Failure Message mean in Assembly / HLASM?
Issued when OPEN processing fails for a VSAM dataset, with the specific return code identifying the cause — a frequent variant is a SHAREOPTIONS conflict, where a batch job and an online region such as CICS both try to open the same cluster for update at the same time under sharing options that don't permit it.
Issued when OPEN processing fails for a VSAM dataset, with the specific return code identifying the cause — a frequent variant is a SHAREOPTIONS conflict, where a batch job and an online region such as CICS both try to open the same cluster for update at the same time under sharing options that don't permit it.
Look up the specific return code shown in the message to identify the failure category, and for share-conflict cases, either serialize the batch and online access or widen the cluster's SHAREOPTIONS if concurrent update access is genuinely required.