Performance (CPU / Memory utilization):
Solaris:
http://javaeesupportpatterns.blogspot.in/2011/12/prstat-solaris-pinpoint-high-cpu-java.html
http://javaeesupportpatterns.blogspot.in/2011/10/outofmemoryerror-oracle-service-bus.html
http://www.softpanorama.org/Admin/Monitoring/Sar/solaris_implementation_of_sar.shtml
Linux:
http://www.tecmint.com/12-top-command-examples-in-linux/
