RDF/IMP and IMPX System Management Manual (RDF 1.3+)

Entering RDFCOM Commands
Compaq NonStop™ RDF/IMP and IMPX System Management Manual—522204-001
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Command Overview
Transaction processing need not be enabled on the primary system, however, when you
enter the START RDF command; it is enough that TMF has been started before you
issue this command.
When RDF starts, it automatically executes an implicit VALIDATE CONFIGURATION
command with the following results:
•
If any parameter value in the RDF configuration file is incorrect, RDFCOM displays
an error message, and the START RDF operation fails.
•
If all of the parameters in the RDF configuration file are correct, RDF copies the
configuration file from the primary system to the backup system, displays any
warning messages, and starts the RDF processes.
•
If only one CPU is configured for any process, RDF displays the following warning
message:
WARNING: No backup CPU has been configured for the process.
If the affected process is an updater process, RDF includes the name of the volume
associated with that updater process in the warning message.
After all RDF processes start, RDFCOM prompts you for your next command.
The extractor, receiver, and updater processes are restartable. Thus, if the extractor or
receiver process pair, or any updater process pair, terminates unexpectedly, you can
restart the pair simply by issuing a START RDF command. You need not resynchronize
your database nor reinitialize RDF before issuing this command. For more information
about how these processes support restartability, see RDF Operations in section 1 and
Processor Failures in section 5.
Examples
To start RDF with updating enabled, enter:
]START RDF
To start RDF with updating disabled, enter:
]START RDF, UPDATE OFF
Note. RDF always starts with updating enabled unless you explicitly specify UPDATE OFF.
This scenario is true even if updating was disabled when RDF was last stopped.