Troubleshooting the RCU
If the RCU fails to connect to the Oracle database, follow the steps below.
-
Stop the listener.
/app/oracle/product/11.2.0/db_home1/bin/lsnrctl stop LISTENER
-
As root, edit the /etc/hosts file and remove your
<server name>
in the127.0.0.1
and::1
line.127.0.0.1 localhost.localdomain localhost.localdomain localhost4 localhost4.localdomain4 localhost centosTemplate <server_name> ::1 localhost.localdomain localhost.localdomain localhost6 localhost6.localdomain6 localhost centosTemplate <server_name>
-
Restart the listener.
/app/oracle/product/11.2.0/db_home1/bin/lsnrctl start LISTENER
-
Double check the status.
/app/oracle/product/11.2.0/db_home1/bin/lsnrctl status LISTENER
Look for the server name after the HOST parameter.Listening Endpoints Summary... (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521))) (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=<server_name>)(PORT=1521)))
- Try to connect to the Oracle database again.