WARNING: Heavy swapping observed on system in last 5 mins.
2016-01-12 12:49
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Fri Dec 18 19:46:49 2015
WARNING: Heavy swapping observed on system in last 5 mins.
pct of memory swapped in [2.14%] pct of memory swapped out [0.08%].
Please make sure there is no memory pressure and the SGA and PGA
are configured correctly. Look at DBRM trace file for more details.
Fri Dec 18 19:46:58 2015
百分之1,2的swap应该属于正常范围,该告警只是一个提醒。可以忽略。
Warning: Heavy Swapping Observed on System after
Upgrade to 11.2.0.3 ( Doc
ID 1452790.1 )
The reason you may now see these informational messages in the alert is due to the fact that in 11.2.0.3 an enhancement fix was included for unpublished Bug
10220118.
Please refer to
Note
10220118.8 - Bug
10220118 - Print warning to alert log when system is swapping
Description
This fix is really an enhancement.
With this fix a warning is printed to the alert log (and DBRM trace)
if excessive swapping is observed on the system.
The warning will not be printed more than once per hour.
WARNING: Heavy swapping observed on system in last 5 mins.
pct of memory swapped in [2.14%] pct of memory swapped out [0.08%].
Please make sure there is no memory pressure and the SGA and PGA
are configured correctly. Look at DBRM trace file for more details.
Fri Dec 18 19:46:58 2015
百分之1,2的swap应该属于正常范围,该告警只是一个提醒。可以忽略。
Warning: Heavy Swapping Observed on System after
Upgrade to 11.2.0.3 ( Doc
ID 1452790.1 )
The reason you may now see these informational messages in the alert is due to the fact that in 11.2.0.3 an enhancement fix was included for unpublished Bug
10220118.
Please refer to
Note
10220118.8 - Bug
10220118 - Print warning to alert log when system is swapping
Description
This fix is really an enhancement.
With this fix a warning is printed to the alert log (and DBRM trace)
if excessive swapping is observed on the system.
The warning will not be printed more than once per hour.
1)AWR显示数据库正常,无明显性能问题,IO 接近1ms,也不存在IO问题。 direct path write temp 119,463 117.4 1 1.3 User I/O db file sequential read 864,039 65.9 0 .8 User I/O 2)因为 Bug 10220118 的增强,11.2.0.3之后的版本会对于swap out+swap in >总内存的2%时,在alert log中打印告警信息。 但是不代表数据库存在问题。只是提醒用户注意OS层面的swap in/out行为。 swap in/out代表着物理内存和swap区域发生交换,一般是因为物理内存不够,但是也有的操作系统会定时将一部分不常用的内存交换到swap空间上去。 swap发生是一种纯OS行为,不由oracle控制。 可以看到,您的告警时swap in/out都只发生了1,2%,属于正常的范围,可以忽略。 3)从数据库的角度讲,当前SGA+PGA占主机内存的62.15%,不存在SGA/PGA配置过大的问题,不需要调整。 具体请参考: Warning: Heavy Swapping Observed on System after Upgrade to 11.2.0.3 ( Doc ID 1452790.1 )
Warning: Heavy Swapping Observed on System after Upgrade to 11.2.0.3 (文档 ID 1452790.1) | 转到底部 |
Oracle Database - Enterprise Edition - Version 11.2.0.3 and later |
Warning: Heavy Swapping Observed on System after Upgrade to 11.2.0.3 (文档 ID 1452790.1) | 转到底部 |
Oracle Database - Enterprise Edition - Version 11.2.0.3 and later |
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