Hello,

I have installed 8.1.6 onto a machine that already has 8.0.4 installed on it .

The 8.0.4 version accesses about 20 db's through the listener.

I have added the tns entries to the 8.1.6 version but get the following error when trying to connect. I have checked these over and they seem OK
ORA-12154: TNS:could not resolve service name

How do i go about setting up the 8.1.6 listener to listen to the 8.0.4 dbs?

Thanks

RJ