Relocating base directory Enterprise Manager’s central agent


After the upgrade of the 12c central agent to 13c, I noticed the new central agent’s home located under the wrong – old agent – directory: /u01/app/oracle/agent12c/agent_13. Must have done something wrong. How to correct this? Want to move the directory to /u01/app/oracle/agent13c/. A very short blog to describe the two steps.

It’s a bit hidden away in the documentation (in the appendixes) but there’s a special procedure to do this, and it worked like a charm for me.

So, /u01/app/oracle/agent12c/agent_13.  should be /u01/app/oracle/agent13c/agent_13.

Step 1:  Create a list of plugins by using this command:

/u01/app/oracle/agent12c/agent_13.      /u01/app/oracle/agent12c/agent_13. -instancehome /u01/app/oracle/agent12c/agent_inst/

A file /u01/app/oracle/agent12c/plugins.txt is created, used by the next command.


Step 2: Creating a new base directory for agent13c – where I didn’t need to stop the agent by the way, that’s all included in the script:

/u01/app/oracle/agent12c/agent_13. /u01/app/oracle/agent12c/agent_13. -instanceHome /u01/app/oracle/agent12c/agent_inst -newAgentBaseDir /u01/app/oracle/agent13c

Post actions to be done:

  • Run from /u01/app/oracle/agent13c/agent_13. manually
  • Deinstall (rm -R) agent home /u01/app/oracle/agent12c/agent_13. manually

And that’s it! Sometimes life is easy.




Moving the central agent base directory :

About Author

Job is a solution architect at AMIS Services with a special interest in Oracle licensing, High Availability architectures and managing complex (Oracle) environments, which includes Cloud environments. With a background as Oracle developer, DBA, team-manager and license-consultant he is able to utilize the Oracle technologies to a cost-efficient architecture for his customers. He is regularly involved in consultancy regarding: - Unlimited License Agreements (ULA). - License compliancy-checks and advice regarding optimizing the environment. - Second opinions. - Education / presentations about licensing and managing your infrastructure in the most cost-efficient manner. Twitter: @jobaclenl

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