By default, SAS OLAP
Servers collect log information in a SAS system log and an ARM log.
The system log is displayed in the
Log tab
of the Server Manager when you select a SAS OLAP Server. The system
log is also stored in a file that is refreshed daily. The ARM log
is stored in a file that is created at server start. To change the
default logging behavior, see
Initial Logging Configuration for SAS Servers.The ARM log receives
no messages under normal operation, because the logger (Perf.ARM.OLAP_Server)
is set to the WARN level.
During the testing and
tuning of cubes, you change the logging level from WARN to INFO so
that the ARM log begins to receive messages.
The Aggregation Tuning
plug-in in SAS OLAP Cube Studio reads ARM logs to generate aggregations
for common queries, as described in the SAS OLAP Cube Studio: User's
Guide.
Be sure to truncate
or delete large log files as necessary to maintain free space on disk.
CAUTION:
To ensure
that you capture accurate log information, configure load-balancing
clusters of SAS OLAP Servers so that each server writes to a separate
ARM log file.
For information about
configuring ARM logs in load-balancing clusters, see the “Understanding
Load Balancing” chapter of the
SAS Intelligence Platform: Application Server Administration Guide.