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

Operating and Monitoring RDF
Compaq NonStop™ RDF/IMP and IMPX System Management Manual—522204-001
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Reading Log Messages
The specified log must reside on the local system. For example, if you are in an
RDFCOM session on the system \SANFRAN, you cannot specify something like
\CHICAGO.$SYSTEM.CHICAGO.NEWLOG as the log.
For more information about the EMS log, see sections 1, 3, 8, and 9.
Reading Log Messages
RDF messages are sent to the EMS log (collector) specified during RDF configuration.
If RDF encounters an error while attempting to open or send a message to the
configured log, RDF takes the following actions:
1. RDF writes either of the following messages to the local $0 process:
"705 File Open Error error# filename"
"700 File System Error error# filename"
2. RDF then closes the log (if it is open). The log remains as configured.
The next time RDF needs to write a message to the log, RDF attempts to reopen the
configured log. If the error condition persists, RDF repeats the steps just described.
Examining RDF Messages
Previous RDF products directed their messages to a log device and a log file. RDF/IMP
and IMPX, however, direct their command, event, warning, and error messages to an
EMS collector in the form of fully-tokenized messages.
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 standard EMS
filter RDFFLTO to produce an intermediate entry-sequenced file which you then can
scan using the RDFSCAN utility.
As noted earlier in this section, when you access RDFSCAN, this utility displays current
information about the RDF message file, including the number of the last record. This
number, presented in the following format, indicates the size of the message file so you
can estimate where to begin your scanning:
File: $SYSTEM.RDF.RDFLOG, current record: 9454, last record: 9466
With RDFSCAN you can specify:
•
A starting point within the message file
•
The number of records to retrieve
•
Text to search for in the message file
Note. The record numbers reflected by RDFSCAN are approximate and might not exactly
match the record numbers that would be displayed by a FUP INFO RDFLOG, STAT command.