The System and Performance Monitoring is managed through metrics that span over all the OBI layers:
Below is a list of tools to collect and/or to visualize this metrics.
The big difference between 10g and 11g is that:
See (Operating) System Metrics
In 10g, the System Management Console allows to get the OBI Performances Metrics through the JMX technology.
The definition of the perfCounters for OBIEE 10g are located in the directory OracleBI_Home\systemsmanagement\resources\performance and describe in two xml files:
You can see it when OC4J start.
Starting OC4J from E:\OracleBI\oc4j_bi\j2ee\home ...
.......
2010-06-01 01:41:29.843 NOTIFICATION PERFORMANCE MONITOR Directory Location =
E:\OracleBI\systemsmanagement\resources\performance
2010-06-01 01:41:29.843 NOTIFICATION Found performance file :
E:\OracleBI\systemsmanagement\resources\performance\perf_OracleBIPresentationServer.xml
2010-06-01 01:41:29.843 NOTIFICATION Found performance file :
E:\OracleBI\systemsmanagement\resources\performance\perf_OracleBIServer.xml
1-jun-2010 1:41:30 oracle.bi.analytics.management.monitoring.PerfDllJNI <init>
........
In 11g, the performance metrics aren't any-more provide through this technology but through DMS. See dms metrics console. To have additional features like auto monitoring and generate alerts when thresholds have been reached etc you will need the BI Management pack