Oracle_Home
\Network\Admin directory for Oracle Fail Safe. The tnsnames.ora backup files are named tnsnames.00n, where n is an integer.Another running Oracle Net listener is already listening for a database. The Oracle Net listener checks that no two listeners on the system listen for the same address or database SID. When this problem is encountered, the listener.ora and tnsnames.ora files that contain the definition of the updated listeners and service names are saved as rollback files. The file names of the rollback files are name
_rlb.ora, where name
is listener or tnsnames.
The virtual address used by the listener is not active on the node where Oracle Services for MSCS is trying to start the listener.
These files are no longer valid due to an improper update or corruption.
The service name, database SID, or network name of the group is incorrect.
The database SID is included in more than one listener (in a multiple Oracle homes environment).
If these files are valid, check that the service name, database SID, and the network name of the group used in the operation are correct. Incorrect information may cause this step to fail.
If you are using a system with a multiple Oracle homes environment, make sure that the database SID is not included in more than one listener. Check all listener.ora files on the system.