Does anyone have any advice on reducing cache buffer chains latch
contention?
>From v$latch_children, I found the children with the highest sleeps and
narrowed that to two tables. A method of reducing the contention is probably
to reduce the number of records per block but that would also mean that now
there will be more blocks to read. Is there any other ways of reducing the
contention? I've tried increasing/reducing _db_block_hash_buckets but that
did not help.
db_block_buffers=40960
_db_block_hash_buckets=db_block_buffers/4
db_block_size=8K
tables' pctfree=30, pctused=40
thanks.
elain
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