In 12c it just won;t find other targets by installing an agent. You can try "Add targets manually" in Setup-> Add targets and then choose
Do you mean you don’t see any targets other than the agent and host targets after deploying the agent on the host (this is expected as indicated in TSharma's reply) or encountered a problem when trying to discover some targets? If you encountered a problem, please provide details on the steps taken and any error message.
If necessary, see the following doc:
Yes, I see just the agent and the host.
when I'm using the process to discover database instance no instance is detected !!
For the "Add targets manually" and Add Non-host targets I used them but no result!
Check this below metalink note
Understanding Database Discovery in Enterprise Manager 12cCloud Control [ID 1400463.1]
I created /etc/oratab and /var/opt/oracle/oratab files even if I didn't find them.
I have a Oracle R12 with Oracle Database 126.96.36.199.0 on AIX 7.1
And the agent is till not able to discover the database !
Any other suggestion thank you.
Check whether DB plugins are preset on Agent home.
Provide output of
<AGENT_HOME>/bin/emctl listplugins agent -type all
run this command to discover internal targets
./emctl config agent addinternaltargets