DanBrother的部落格

When facing the following Alert message:
The Listener is down: LSNRCTL for Linux: Version 11.2.0.3.0 .... TNS12560  ... TNS00511

It could be that the agent XML file  in the target node was not setup correctly.

The correct setting is as follows:
1. vi $AGENT_HOME/sysman/emd/config/target.xml

2. Change the value of ListenerOraDir from "undefined/network/admin" to the correct value.
     e.g.  /grid/grid110203/network/admin

3. Stop the agent by:
    emctl stop agent
4. Start the agent and reload by:
     emctl start agent
     emctl reload agent