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2#
发表于 2015-1-31 18:59:41
Event Waits %Time -outs Total Wait Time (s) Avg wait (ms) Waits /txn % bg time
log file parallel write 28,948 0 997 34 0.86 46.30
Event Waits Total Wait Time (sec) Wait Avg(ms) % DB time Wait Class
db file sequential read 3,732,212 43.4K 12 56.0 User I/O
DB CPU 27.8K 35.8
log file sync 32,562 3844 118 5.0 Commit
gc current block busy 6,671 961.7 144 1.2 Cluster
gc buffer busy acquire 9,011 488.2 54 .6 Cluster
gc buffer busy release 2,445 486.9 199 .6 Cluster
gc cr block busy 3,580 335.7 94 .4 Cluster
gc current block 2-way 264,055 69.4 0 .1 Cluster
SQL*Net message to client 43,244,308 37.3 0 .0 Network
enq: TX - index contention 1,188 17.5 15 .0 Concurrency
如果无法调整 logfile的IO的话 可以考虑 commit_write 和配合一些”特殊的处理“
其他一些参数 也有少量的 调优空间 |
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