标签：
| Snap Id | Snap Time | Sessions | Cursors/Session | |
| Begin Snap: | 35669 | 2012-11-8 13:00 | 1246 | 11.3 |
| End Snap: | 35679 | 2012-11-8 18:00 | 834 | 16 |
| Elapsed: | 300.14 | |||
| DB Time: | 2,841.67 | |||
| Operating System Statistics | Time Model Statistics | |||
| Statistic | Total | Statistic Name | Time (s) | % of DB Time |
| NUM_LCPUS | 0 | sql execute elapsed time | 87,551.84 | 99.97 |
| NUM_VCPUS | 0 | DB CPU | 248.77 | 0.28 |
| AVG_BUSY_TIME | 126,487 | parse time elapsed | 2.76 | 0 |
| AVG_IDLE_TIME | 1,675,188 | hard parse elapsed time | 1.47 | 0 |
| AVG_IOWAIT_TIME | 2,687 | failed parse elapsed time | 0.45 | 0 |
| AVG_SYS_TIME | 11,000 | PL/SQL execution elapsed time | 0.84 | 0 |
| AVG_USER_TIME | 114,879 | hard parse (sharing criteria) elapsed time | 0.32 | 0 |
| BUSY_TIME | 48,496 | hard parse (bind mismatch) elapsed time | 14.16 | 0.01 |
| IDLE_TIME | 8,623,372 | sequence load elapsed time | 9.8 | 0.01 |
| IOWAIT_TIME | 7,728 | repeated bind elapsed time | 0.01 | 0 |
| SYS_TIME | 5,691 | PL/SQL compilation elapsed time | 2.03 | 0 |
| USER_TIME | 42,512 | connection management call elapsed time | 1.7 | 0 |
| LOAD | 0 | inbound PL/SQL rpc elapsed time | 0.02 | 0 |
| OS_CPU_WAIT_TIME | 7,404,200 | DB time | 87577.44 | |
| RSRC_MGR_CPU_WAIT_TIME | 0 | background elapsed time | 1585.54 | |
| PHYSICAL_MEMORY_BYTES | 135,319,207,936 | background cpu time | 206.8 | |
| NUM_CPUS | 48 | |||
| NUM_CPU_CORES | 24 | |||
| 每个CPU耗时:= | DB Time/逻辑cpu个数 | 59.20 | min | |
| DB利用率:= | DB Time/(NUM_CPUS*Elapsed)*100% | 19.72% | NUM_CPUS是逻辑cpu个数 | |
| CPU利用率:= | (DB CPU + background cpu time )/(NUM_CPUS*Elapsed )*100% | 0.08% | NUM_CPUS是实际cpu个数 | |
| %User = | USER_TIME/(BUSY_TIME+IDLE_TIME)*100% | 0.49% | ||
| %Sys = | SYS_TIME/(BUSY_TIME+IDLE_TIME)*100% | 0.07% | ||
| %Idle = | IDLE_TIME/(BUSY_TIME+IDLE_TIME)*100% | 99.44% | ||
| ELAPSED_TIME= | (BUSY_TIME+IDLE_TIME)/1000 | Elapsed*60*60 | ||
| 8671.868 | 1080504.00 | |||
| Service Statistics | ||||
| ordered by DB Time | ||||
| Service Name | DB Time (s) | DB CPU (s) | Physical Reads | Logical Reads |
| SYS$USERS | 87,476.00 | 146.00 | 3,262 | 51,625 |
| oradb11 | 101.00 | 102.00 | 0 | 545 |
| SYS$BACKGROUND | 0 | 0 | 1 | 26 |
| Total DB Time | 87577.0 | |||
| Total DB Cpu | 248.0 | |||
| % DB Time | 0.28% | |||
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原文地址：http://www.cnblogs.com/HondaHsu/p/4194015.html
