Multiple Oracle Homes and Multiple Listeners

Question

I have two existing oracle homes on the same server and would like to change the configuration so that they have their own listener listening on different ports. How do I do this? What are the critical files that need to be changed?

Answer 1

user445507 wrote:
Thanks Hans but we may have a need to take down a listener and oracle_home for one and leave the other running. Are you suggesting adding a listener declaration in the listener.ora on both oracle_homes for both listeners and change the ports while leaving the port in the tnsnames.ora for both homes at 1521?
We are on Solaris 10 and using 10.2.0.4Databases these days register themselves to the listener. You do absolutely nothing in the listener.ora file.
Simply
- shut down the listener in ORACLE_HOME #1;
- start up the listener in ORACLE_HOME #2 with the defaults;
- access each database as a DBA and run 'Alter System Register;' on each database;
- verify the listner knows about the all using 'lsnrctl status'
One common misconception is that the listener must be up. Only true to accept NEW connections - existing connections will not be affected if the listener is taken down.
Precondition is that all databases are installed under the same UID/GID