RAC中的EM切换节点

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环境：RAC 11.2.0.4

RAC环境中，应该是不能在多个节点同时运行EM，但是可以切换运行的节点：

步骤：

1。关闭正在运行的EM

[oracle@rac1 ~]$ emctl stop dbconsole

Oracle Enterprise Manager 11g Database Control Release 11.2.0.4.0

https://rac1:1158/em/console/aboutApplication

Stopping Oracle Enterprise Manager 11g Database Control ...

... Stopped.

2。

[oracle@rac1 ~]$ emca -reconfig dbcontrol -cluster -EM_NODE rac1 -EM_SID_LIST orcl1,orcl2

STARTED EMCA at Nov 30, 2017 5:04:15 PM

EM Configuration Assistant, Version 11.2.0.3.0 Production

Enter the following information:

Database unique name: orcl

Service name: orcl

Agent Node list [comma separated] (optional): rac1 <<<<<<<<这里只能填一个目标节点，不能rac1,rac2

Do you wish to continue? [yes(Y)/no(N)]: y

Nov 30, 2017 5:04:24 PM oracle.sysman.emcp.EMConfig perform

INFO: This operation is being logged at /u02/app/oracle/cfgtoollogs/emca/orcl/emca_2017_11_30_17_04_15.log.

Nov 30, 2017 5:04:28 PM oracle.sysman.emcp.ParamsManager getInaccessibleNodeList

WARNING: The following cluster nodes are unavailable: [rac2].

Nov 30, 2017 5:04:28 PM oracle.sysman.emcp.ParamsManager getInaccessibleSidList

WARNING: The requested operation will not be performed for the following instances: [orcl2].

Nov 30, 2017 5:04:29 PM oracle.sysman.emcp.util.DBControlUtil stopOMS

INFO: Stopping Database Control (this may take a while) ...

Nov 30, 2017 5:04:54 PM oracle.sysman.emcp.EMAgentConfig performDbcReconfiguration

INFO: Propagating /u02/app/oracle/product/11.2.0/db_home/rac1_orcl/sysman/config/emd.properties to remote nodes ...

Nov 30, 2017 5:04:54 PM oracle.sysman.emcp.util.DBControlUtil startOMS

INFO: Starting Database Control (this may take a while) ...

Nov 30, 2017 5:06:05 PM oracle.sysman.emcp.EMDBPostConfig performDbcReconfiguration

INFO: Database Control started successfully

Nov 30, 2017 5:06:05 PM oracle.sysman.emcp.EMDBPostConfig showClusterDBCAgentMessage

INFO:

**************** Current Configuration ****************

INSTANCE NODE DBCONTROL_UPLOAD_HOST

---------- ---------- ---------------------

orcl rac1 rac1

Enterprise Manager configuration completed successfully

FINISHED EMCA at Nov 30, 2017 5:06:05 PM

此时EM会自动打开

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