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

Introducing RDF
HP NonStop RDF/IMP and IMPX System Management Manual—524388-001
1-10
User Interfaces
User Interfaces
To use RDF, you run two online utilities: RDFCOM and RDFSCAN. Both are interactive
command interpreters through which you begin a session and enter requests to the
subsystem.
RDFCOM for Subsystem Management and Operations
To manage, operate, and control RDF, use the RDFCOM utility. You can issue
commands to:
•
Configure RDF
•
Control RDF operation
•
Obtain status information about RDF regarding database activity on the primary
system and processing on the backup system
Tasks and examples using RDFCOM commands appear throughout the manual.
Reference information for all commands appears in Section 8, Entering RDFCOM
Commands.
Scanning the EMS Event Log
RDF writes messages to the EMS event log when any of the following occurs:
•
RDF is initialized
•
RDF is started or stopped
•
Updating is started or stopped
•
RDF issues an informational, warning, or error message (including RTD warning
messages)
•
An RDF process takeover occurs
•
Control switches from the primary to the backup database
•
A NonStop SQL DDL operation using the WITH SHARED ACCESS option is
detected
•
An exception record is written
You can peruse messages in the EMS log on your terminal screen by using Viewpoint
or whatever other tool you normally use for monitoring $0. Note that when doing that,
however, you are dealing with the entire EMS log (not just RDF messages).
To isolate RDF messages from the rest of the EMS log, you can use the supplied EMS
filter RDFFLTO with an EMS printing distributor to produce an intermediate entry-
sequenced file which you then can scan using the RDFSCAN utility.