Using Rdf Status Data To Control Tmf Audit Dumping; Changing Configuration Attributes - HP NonStop RDF J-series RVUs Management Manual

column for any RDF process, you should examine the messages in the RDF log file or on
the RDF log device to determine what is happening and what corrective action to take.
Except for updaters, asterisks in the Error column continue to appear in every STATUS
RDF display until the error condition has been corrected.
For updaters, the asterisks disappear when the error is corrected and updating is restarted
after execution of any of the following commands:
STOP UPDATE
STOP RDF
STOP TMF
Although the occurrence of a critical error might mean that the primary and backup databases
are no longer synchronized with one another, that is not always the case. If, for example, the
primary CPU of the disk process goes down, all updater processes affected by that error condition
report a file-system error and then attempt to restart. If the error does not occur again when the
affected updater processes restart, the databases are probably still synchronized with one another.
In that case, the asterisks are cleared from subsequent STATUS RDF displays.
For more information on critical errors, you can scan the EMS collectors on the primary and
backup systems:
• The EMS collector on the primary system contains log messages for the extractor and monitor
processes.
• The EMS collector on the backup system contains log messages for the receiver, purger, and
all updater processes.
When RDF is not running, the STATUS RDF report indicates why. For example, the report might
indicate that the subsystem has never been started, or that it has crashed. The report also indicates
where processing resumes in the TMF audit trail when RDF is restarted.
When the BREAK key is pressed while the STATUS RDF command is executing with the PERIOD
option (which requests repeated displays at a specified interval), the break takes effect within
one second rather than waiting until the end of the current interval.

Using RDF Status Data to Control TMF Audit Dumping

You can use the STATUS RDF command to determine when the RDF extractor has finished
processing the audit file that TMF wants to dump. The TMF/RDF trail listed for the extractor in
the STATUS RDF display indicates the TMF audit trail file that the RDF extractor is currently
processing.
Approximately 30 seconds after the STATUS RDF display shows that the extractor's sequence
value is greater than the number of the audit trail that TMF wants to dump, it is safe to mount
the tape and let TMF dump the audit trail if one is dumping to tape and not to disk.

Changing Configuration Attributes

After RDF starts, you can change the following configuration attributes online as the need arises:
• The priority at which each RDF process runs
• The EMS log
• RETAINCOUNT
• PURGETIME (altering this attribute causes the purger to perform a purge pass immediately)
• UPDATERDELAY
• UPDATEROPEN
These are the only configuration attributes that can be altered while RDF is running. To change
any other configuration attributes, you must first stop RDF or UPDATING as directed in
"Restarting RDF" (page
116 Operating and Monitoring RDF
136).