Memory usage for Oracle components

Dear All,

One of my database server is with memory utilization 100%. I want to find out what is the memory usage of each of the oracle components in that server. Is there any script(s) out there that can help me find out the memory usage of the following components:

1. database instance (background process + sga)
2. database server processes (eg. user connections)
3. ASM instance
4. clusterware
5. EM Agent.

Regards,

-- Chris

Which O/S... is it Linux?

The OS is AIX. If you have suggestions on Linux, I would like to know too because I have some database servers that are running on Linux.

Thanks a lot,

-- Chris