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5#
发表于 2012-8-14 19:39:18
Hard parses: 129.18 1.13
每秒硬解析129次,还是比较高的
Event Waits Time(s) Avg Wait(ms) % Total Call Time Wait Class
latch: library cache 693,519 156,502 226 48.5 Concurrency
latch free 429,848 94,889 221 29.4 Other
latch: shared pool 246,081 52,749 214 16.3 Concurrency
latch: session allocation 105,731 29,898 283 9.3 Other
主要等待都是解析等待
library cache latch主要体现在:
library cache kgldti: 2child 0 141,831 19,299
library cache kglpin 0 110,135 20,900
library cache kgldte: child 0 0 47,770 193,300
shared pool发生过抖动:
shared CCursor 404.43 362.37 -10.40
shared KGH: NO ACCESS 2,694.92 2,121.10 -21.29
shared PCursor 279.84 239.92 -14.27
shared db_block_hash_buckets 180.00 180.00 0.00
shared free memory 1,688.18 1,762.80 4.42
shared gcs resources 530.49 530.49 0.00
shared gcs shadows 334.16 334.16 0.00
shared kglsim object batch 96.18
shared library cache 271.80 256.20 -5.74
shared sql area 2,616.62 2,613.60 -0.12
_ksb_disable_diagpid TRUE
_ksb_disable_diagpid禁止了diag进程做systemstate dump,结果如4楼 |
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