Cannot Start Listener in 10g, But Can in 9i

I upgraded a Win2000 (SP4) server from Oracle 9i to 10.2.0.4. (It is a SAP system, not
supported for Ora11).

The upgrade went well. I used DBUA. I can start the database in 10g.

However, when I try to start the listener, the response is a set of TNS errors:
(TNS-12542: TNS:address already in use, TNS-12560: TNS:protocol
adapter error,
 TNS-00512: Address already in use).

I checked "netstat -a" , the port is free and few connections are being used. I
tried changing ports, etc..., but the problem persists.

The interesting thing is that the listener works when I "switch it" to the 9i
version.

That is, I change the env. variables ORACLE_HOME and the registry settings ORACLE_HOME, ORACLE_HOME_NAME, ORACLE_GROUP_NAME to point to 9i.

I log off and on, and start the listener from <Oracle_9i home>\bin.
(Because

the 10g version is on the path).

Then, the listener start and stops without any problems, using the same port
as in 10g. I make sure that the listener is stopped.

However, when I switch the env. variable and the regsitry settings back to 10g,
in 10g I can start the database, but the listener has the 'TNS" errors, previously
mentioned.

Also, I copied the listener.ora and tnsnames.ora to the <10g Home> \network\admin,
and adapted them for the new Oracle Home.

Any ideas will be greatly appreciated.

Thanks,
QZ Received on Mon Mar 15 2010 - 11:06:36 CDT