RDF System Management Manual for H-Series and J-Series RVUs (RDF 1.9)

~DISABLE DATAVOLS *
~START TMF
Notice that these commands prevent any disk volumes on the local system from being
enabled for TMF operations before starting the subsystem.
3. Reenable all pertinent disk volumes for TMF operations by entering the following command
through TMFCOM:
~ENABLE DATAVOLS *
When this command is executed, TMF performs its volume recovery operation on the audited
volumes, and RDF reads the audit during this operation.
4. Restart RDF through RDFCOM by entering:
]START RDF
NOTE: Normally you start RDF before starting your applications. If the TMF subsystem
has crashed on the primary system, however, characteristics of the TMF audit trail after the
TMF subsystem is restarted require that you restart your applications before restarting RDF.
This allows audit records to be generated in the MAT and any auxiliary audit trails involved
in your RDF environment. At that point you restart RDF.
If you started RDF before starting your applications, you might notice that the auxiliary
extractor continues to read the same data over and over again without moving forward. To
correct that situation, you merely stop and then restart the RDF subsystem.
5. Restart your applications.
TMF Subsystem Failure on the Backup System
RDF can recover from a TMF failure on the backup system if the TMF volume recovery operation
is successful after the failure. To perform this recovery:
1. From the primary system, stop updating of the backup database by entering this command
through RDFCOM:
]STOP UPDATE
2. Correct the problem on the backup system and recover the volume.
3. From the backup system, restart TMF on the backup system by entering this command
through TMFCOM:
~START TMF
4. From the primary system, resume updating of the backup database by entering this command
through RDFCOM:
]START UPDATE
Volume Recovery Processing
RDF handles volume recovery automatically.
Volume Recovery Failure
RDF cannot recover from a TMF subsystem failure if TMF cannot successfully perform volume
recovery. After the TMF failure has been resolved, you must perform the following tasks:
1. Resynchronize the primary and backup databases, following procedures explained in
Chapter 6 (page 157) and Chapter 7 (page 167).
2. Reinitialize RDF.
Responding to Operational Failures 129