Friday, October 2, 2015

Configuring the Management Agent to New (OMS) Management Service



Configuring the Management Agent to
Use a New Management Service


In today's demonstration I am showing how to reconfigure Management Agent when I have migrated/move our OMS to New Server.  In this case after movement OMS, agent repository URL is still trying to access existing OMS server which is down as I have migrated to new one.


When you install the Management Agent on a managed host, you associate the Management Agent with a particular Management Service. The Management Agent uses the Management Service URL address and port to identify and communicate with the Management Service.
After you install the Management Agent, you can later reconfigure the Management Agent so it is associated with a different Management Service. Reconfiguring the Management Agent requires no changes to the Management Service. The reconfigured Management Agent will begin communicating with the new Management Service after the Management Agent is restarted.

To associate the Management Agent with a new Management Service after you have installed the Management Agent:


  1. Stop the Management Agent.

Locate the emd.properties file in the Management Agent home directory:

AGENT_HOME/sysman/config/emd.properties

Editor AGENT_HOME/sysman/config/emd.properties and locate the REPOSITORY_URL property.

Modify the value for the REPOSITORY_URL property so it references the new Management Service.

For example:


REPOSITORY_URL=https://oem250:4889/em/upload




  1. Also modify the value for the emdWalletSrcUrl and emdWalletDest properties so they reference the new Management Service and the new Oracle home path, respectively:

For example, if the new Management Service is on a host called oem250 and the new is oem251, Oracle home is, modify the properties as follows:



emdWalletSrcUrl=http://oem251:4889/em/wallets/emd
emdWalletDest= /u01/app/oracle/Agent12cR5/agent_inst/sysman/config/server



Save your changes and close the emd.properties file.


  1. Delete all the files in the following directories:


AGENT_HOME/sysman/emd/upload/
AGENT_HOME/sysman/emd/state/


  1. Restart the Management Agent.


dns100:> emctl start agent
Oracle Enterprise Manager Cloud Control 12c Release 5
Copyright (c) 1996, 2015 Oracle Corporation.  All rights reserved.
Starting agent ........... started.
dns100:>
dns100:>
dns100:>
dns100:> emctl status agent
Oracle Enterprise Manager Cloud Control 12c Release 5
Copyright (c) 1996, 2015 Oracle Corporation.  All rights reserved.
---------------------------------------------------------------
Agent Version          : 12.1.0.5.0
OMS Version            : 12.1.0.5.0
Protocol Version       : 12.1.0.1.0
Agent Home             : /u01/app/oracle/Agent12cR5/agent_inst
Agent Log Directory    : /u01/app/oracle/Agent12cR5/agent_inst/sysman/log
Agent Binaries         : /u01/app/oracle/Agent12cR5/core/12.1.0.5.0
Agent Process ID       : 6608
Parent Process ID      : 6565
Agent URL              : https://dns100.ora.com:3872/emd/main/
Local Agent URL in NAT : https://dns100.ora.com:3872/emd/main/
Repository URL         : https://oem251.ora.com:4903/empbs/upload
Started at             : 2015-10-03 05:52:05
Started by user        : oracle
Operating System       : Linux version 2.6.39-400.209.1.el5uek (amd64)
Last Reload            : (none)
Last successful upload                       : 2015-10-03 05:52:14
Last attempted upload                        : 2015-10-03 05:52:14
Total Megabytes of XML files uploaded so far : 0.01
Number of XML files pending upload           : 0
Size of XML files pending upload(MB)         : 0
Available disk space on upload filesystem    : 87.64%
Collection Status                            : Collections enabled
Heartbeat Status                             : Ok
Last attempted heartbeat to OMS              : 2015-10-03 05:52:10
Last successful heartbeat to OMS             : 2015-10-03 05:52:10
Next scheduled heartbeat to OMS              : 2015-10-03 05:53:10

---------------------------------------------------------------
Agent is Running and Ready


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