Owners Manual

Application Server Statistics | Performance Monitoring
370 OMNM 6.5.2 User Guide
Logging Categories
The Application Server Statistics portlet also displays a table that catalogs servers’ Partition Name,
Server Type
and Node Name. This includes a button the upper right corner where you can access
Log Categories — log4j.xml items—without having to text edit that file. See Defining a Debug
File on page 141
for more about log4j.xml .
The log4j.xml items appear listed with their default log levels. Altering log levels for the listed
items can provide more information for troubleshooting. Log levels determine the detail of server
log output.
Notice that you can sort these by clicking the table headings, and can look for items with the
Search link below the checkboxes. You can check or uncheck categories at the top of this screen to
confine the display to only desired categories.
These self-monitoring capabilities let you tune Application Server logs to produce meaningful
output. Clicking the Edit icon to the right of an item lets you change its log level.
Changing log levels in this screen alters log reporting levels for all Application servers, if you have
more than one, without restarting them. This simplifies setting log levels, and does not require
editing the log4j.xml file.
CAUTION:
More, and more detailed logging can have a performance impact. See also Understanding Performance
Monitoring on page 361.