SNA NRJE Node Managers Guide (30292-90007)

62 Chapter5
SNA NRJE Troubleshooting
The Logging Facility
The Logging Facility
Logging records subsystem events — significant normal events, as well
as error events — for use in problem determination. SNA NRJE logging
is configured through NMMGR (see the SNA Link Services Reference
Manual [for MPE V] or the SNA Link/XL Node Manager’s Guide [for
MPE XL]), and it is controlled through the MPE commands SHOWNMLOG,
SWITCHNMLOG, and RESUMENMLOG. These commands enable the node
manager to determine the name of the current log file and the amount
of available space in it, close the current log file and open a new one,
and activate logging after a recoverable error. The MPE commands are
described in the SNA Link Services Reference Manual and in the SNA
Link/XL Node Manager’s Guide. SNA NRJE logging records NRJE
events, errors, and host job entry subsystem messages.
When you configure logging, you indicate the level you want logging
configured for by specifying the level’s subsystem number. Then, within
each subsystem, you can indicate which events you want logged, by
specifying event class numbers.
The subsystem number for SNA NRJE is SUB0002, and the class
numbers are as follows:
• CLAS0010 — workstation events.
— Job transmission.
— Job output reception (including Peripheral Device Information
Records [PDIRs]).
— Noncritical errors.
• CLAS0012 — critical events and errors.
— Critical errors.
— LU startup.
— LU shutdown.
• CLAS0013 — JES2, JES3, and VSE/POWER console commands and
messages.
CLAS0012 logging (at least to disk) should always be on.