Interpreting z/OS WLM Change State PB service codes
The WLM Change State Performance Block (PB) service is used to show the current state of the transaction.
The PB service codes are interpreted as follows for IMS:
- State
- Description
- Active
- The transaction is executing an application program.
- Free
- This is not reported by WLM.
- Idle
- The transaction is waiting for work.
- Waiting - I/O
- IMS waiting on I/O (IMS initialed I/O).
- Waiting - Lock
- IMS waiting on a lock request.