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You have run the UTLBSTAT/UTLESTAT utilities and the report.txt shows a latch hit ratio of 0.99. What does this value indicate about latch activity for the database?

April 26, 2017hit Latch ratio run shows utilities utlbstat utlestat value

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You have run the UTLBSTAT/UTLESTAT utilities and the report.txt shows a latch hit ratio of 0.99. What does this value indicate about latch activity for the database?

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A latch hit ratio of 99% is optimal. Latch contention should be always be 1% or less. To resolve redo latch contention, increase LOG_SIMULTANEOUS_COPIES and decrease LOG_SMALL_ENTRY_MAX_SIZE.