Question
What tuning indicators can one use?
Answers
The following high-level tuning indicators can be used to establish if a database is performing optimally or not:

Buffer Cache Hit Ratio.
Formula: Hit Ratio = (Logical Reads - Physical Reads) / Logical Reads.
Action: Increase DB_CACHE_SIZE (DB_BLOCK_BUFFERS prior to 9i) to increase hit ratio.
Library Cache Hit Ratio.
Action: Increase the SHARED_POOL_SIZE to increase hit ratio.   Your Comment




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