HP NonStop RDF J-series RVUs Management Manual page 216

• If you include the TIMESTAMP, INITTIME, or SYNCHDBTIME options in the INITIALIZE
RDF command, the initialization will complete much quicker if all the files from the current
down to the one in which the timestamp being sought is located are all on disk. If, however,
some of these audit files have been dumped to tape, RDFCOM triggers TMF to prompt you
to restore needed audit trail files. Therefore, not every file in the MAT must be present in
the audit trail at the time you issue the INITIALIZE command. For example, if the current
file is AA000010, files AA000010 and A000009 are in the MAT, and A000008 contains the
point where RDF is actually initialized but it has already been dumped to tape, then RDFCOM
triggers TMF to prompt you to restore AA000008. When you have restored that file, RDFCOM
continues its search in A000008 for the correct initialization location.
• If you include the TIMESTAMP option in the INITIALIZE RDF command, then the specified
timestamp must correspond exactly to a TMF shutdown point. Whenever TMF stops in
response to a STOP TMF command, it writes a timestamp in the Event Management Service
(EMS) log. That is the timestamp you use with the TIMESTAMP option of the INITIALIZE
RDF command.
• If you do not include the TIMESTAMP, INITTIME, or SYNCHDBTIME options in the
INITIALIZE RDF command, you must delete and reconfigure TMF before you initialize
RDF. In this case, the extractor will transmit audit from the beginning of the first Master
Audit Trail (MAT) file (AA000001).
• If you include the TIMESTAMP option in the INITIALIZE RDF command, RDFCOM searches
backwards in the MAT for a TMF shutdown record with the specified timestamp. If you
include the INITTIME or SYNCHDBTIME option, RDFCOM searches backwards in the
MAT for the first commit or abort record whose timestamp is less than the specified
timestamp. When it finds the shutdown record or commit/abort record, RDFCOM sets the
context of the extractor to the record following that record.
• When RDF is initialized, the contexts of the receiver and all updaters are initialized to the
beginning of the first image file (AA000001). When RDF is started for the first time after it
has been initialized, any previously existing image files are purged.
• If you plan to include the TIMESTAMP option in the INITIALIZE RDF command, make
sure that the primary system database is backed up after the TMF shutdown so that the
backup database can be restored at this point in the audit trail. Consider the following
example:
1. TMF and RDF subsystems are running.
2. TMF subsystem is stopped, and RDF subsystem subsequently stops.
3. TMF subsystem is started and application processing resumed.
4. TMF subsystem is stopped.
If you initialize RDF at the shutdown point at
system a copy of the primary system database taken at
synchronized if the database at
If you initialize RDF to the timestamp corresponding to
backup system a copy of the primary system database taken at
• If you are using the TIMESTAMP option, it is a good idea to initialize RDF to the latest TMF
shutdown point. In the example immediately above, if you were to initialize RDF to Point
2, then, after you have initialized and started RDF, it will shutdown when it reaches the
audit trail location of the next TMF shutdown at Point 4. In this case, you must initialize
RDF at the most recent TMF shutdown point. If you initialize RDF at an earlier shutdown
point, RDF operations will start at that point but will shut down when the next TMF
shutdown point is reached. In this case, you must restart RDF quickly so that operations on
the backup system do not fall too far behind those on the primary system. If you choose to
initialize RDF at a TMF shutdown point that is not the most recent, watch the RDF event
messages for the RDF shutdown message and then restart RDF immediately.
216 Entering RDFCOM Commands
Step 1, you should restore on the backup
Step 2 was restored to the backup system.
Step 1. The databases would not be
Step 2, you should restore on the
Step 2.