VTMA - dual mode control transaction
The dual mode facility (DMF) causes calls to be processed against a VSAM data set and the migrated data in DB2®. The VTMA transaction controls the DMF. You must specify one of the following parameters with VTMA:
- STAT
- This shows the status of DMF.
- START
- This starts DMF.
- STOP
- This stops DMF.
- RESTART
- This restarts DMF and is only required when applying software maintenance.
The DMF is explained in full in The dual mode facility (DMF).