RDF/IMP and IMPX System Management Manual (RDF 1.4+)

Entering RDFCOM Commands
HP NonStop RDF/IMP and IMPX System Management Manual—524388-001
8-42
Command Overview
ADD commands or by executing a command file containing those commands. Only
then can you issue the START RDF command to start RDF.
The INITIALIZE RDF command also establishes the name of the RDF control
subvolume, which you subsequently specify when initiating RDFCOM sessions or
in OPEN commands.
If you include the SUFFIX parameter, the specified character becomes a permanent
part of the RDF control subvolume name and you can only alter that character by
issuing another INITIALIZE RDF command.
When using the INITIALIZE RDF command, follow these guidelines:
•
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 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:
a. TMF and RDF subsystems are running.
b. TMF subsystem is stopped, and RDF subsystem subsequently stops.
c. TMF subsystem is started and application processing resumed.
d. TMF subsystem is stopped.
If you initialize RDF at the shutdown point at Step d, you should restore on the
backup system a copy of the primary system database taken at Step d. The
databases would not be synchronized if the database at Step b was restored to the
backup system.