Database Tuning (MOSC)

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DB_cache_size values

edited Jan 22, 2013 5:53AM in Database Tuning (MOSC) 7 commentsAnswered
Hi Gurus,

I have a 11.2.0.3 RAC set up on RHEL5 with its primary on 3 nodes and its physical standby database on 2 nodes. I have set only the parameter 'memory_target= 10304M' at the database end which is the same for all these three instances. Database instances have tuned the below values automatically for the Db_cache_size. And I have noticed more disk reads for the LT3 and LT1 and so my SQL is taking longer time to get it executed when it is hit on LT3 and LT1 compared to LT2. Why there is a huge difference in the tuned values ? What we can do

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