Troubleshooting High CPU Utilization and Performance Tuning Metalink ID's

1. Troubleshooting: High CPU Utilization [ID 164768.1]
2. How to Diagnose High CPU Usage Problems to the Module Level [ID 352648.1]
3. Master Note: Database Performance Overview [ID 402983.1]
4.How to Analyze High CPU Utilization In Solaris [ID 1008930.1]

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Block Change tracking causing more CPU (CTWR)
CTWR consuming lots of CPU cycles with block tracking (Doc ID 10170431.8)
CTWR Consuming Lots Of Cpu Cycles With Block Tracking (Doc ID 1310304.1)
RMAN Fast Incremental Backups using BCT = Block Change Tracking file [ID 262853.1]