OEM 13C禁用"Global Cache Blocks Lost Metric"報警信息

 

前言

最近OEM剛剛部署好，配置好郵件報警功能后，會比較頻繁的報警如下信息：

EM Event: Critical:szceb_szceb1 - Metrics Global Cache Blocks Lost is at 264

Host=xxxxx1 
Target type=Database Instance 
Target name=xxxxx_xxxxx1 
Categories=Error 
Message=Metrics Global Cache Blocks Lost is at 264 
Severity=Critical 
Event reported time=Aug 6, 2020 5:17:56 PM CST 
Operating System=Linux
Platform=x86_64
Associated Incident Id=86 
Associated Incident Status=New 
Associated Incident Owner= 
Associated Incident Acknowledged By Owner=No 
Associated Incident Priority=None 
Associated Incident Escalation Level=0 
Event Type=Metric Alert 
Event name=rac_global_cache:lost 
Metric Group=Global Cache Statistics
Metric=Global Cache Blocks Lost
Metric value=264
Key Value= 
Rule Name=Incident management rule set for all targets,Create incident for critical metric alerts 
Rule Owner=System Generated 
Update Details:
Metrics Global Cache Blocks Lost is at 264

對於該問題，可能網絡會存在問題，簡單的搜索並診斷后，發現網絡目前看不出啥問題。

集群日志也正常，但是郵件確是報了很多次，想着先把這類信息禁用掉，待查明看是否真的存在問題在決定是否啟用。

 

如何禁用

參考如下mos文檔：

EM 13c: How to disable "Global Cache Blocks Lost Metric" Using EMCLI (Doc ID 2543134.1)

EM 13c, 12c: 'emcli modify_collection_schedule' Command Shows Collection Name Is Not Valid (Doc ID 2521116.1)

在OEM服務器，

[oracle@oem13c ~]$ cd $OMS_HOME/bin
[oracle@oem13c bin]$ ./emcli login -username=sysman
Enter password : 

Login successful
[oracle@oem13c bin]$ ./emcli sync
Synchronized successfully
[oracle@oem13c bin]$ $OMS_HOME/bin/emcli modify_collection_schedule -targetType="oracle_database" -targetNames="xxxxx1" -collectionName="rac_global_cache_10i" -collectionStatus=Disabled -preview="N"
oracle_database : Collection Name not valid.

 

哦豁，直接報錯oracle_database : Collection Name not valid了。

網上搜不到啥信息，搞了半個多鍾發現郵件內容中有包含有Target name的名字，可能是命令中的-targetNames="xxxxx1"是有問題的？

由於Doc ID 2543134.1中給的示例為

 

因此我是直接將<DBInstanceName>換成實例名了，結果貌似不對。用郵件中Target name對應的名字再試試看，

[oracle@oem13c bin]$ ./emcli modify_collection_schedule -targetType="oracle_database" -targetNames="xxxxx_xxxxx1" -collectionName="rac_global_cache_10i" -collectionStatus=Disabled -preview="N"       
Collection Name : rac_global_cache_10i
szceb_szceb1 : Collection Schedule updated successfully.
The collection schedule of the following metrics might be affected :
rac_global_cache

 

em......

有時候覺得mos的內容也挺坑的......

由於不止target name報出來，那么先只禁用這個，看看還會不會報，在禁用其他的。