Actually, I ran into issues using a 9.2.0.5.0 listener for an 8.1.7.4 DB. I think it had to do with auto-registration or some such. It would be even more helpful if I had actually documented this back in May '04 when I discovered it. Rich ________________________________ From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Sam Chakkanat Sent: Wednesday, November 29, 2006 9:45 AM To: smishra_97@xxxxxxxxx; oracle-l@xxxxxxxxxxxxx Subject: RE: Multiple Listener You could have the same listener to configure all three. But that is not the best practice. If you need to maintenance on one Oracle Home that requires a listener bounce then, the other's will be effected. Also, please verify the listener version support between 10.2.0.2 and 8.0.6. Sam ________________________________ From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Sanjay Mishra Sent: Wednesday, November 29, 2006 7:23 AM To: oracle-l@xxxxxxxxxxxxx Subject: Multiple Listener I have three Oracle software in one server 8.06, 817 and 10.2.0.2 and each one is having one instance running on the server. Do I need to run three listener for all three Database separately on 3 different Port or there is any way that I can use one Listener to take care of all Client request. TIA Sanjay ________________________________ Access over 1 million songs - Yahoo! Music Unlimited. <http://pa.yahoo.com/*http://us.rd.yahoo.com/evt=36035/*http://music.yah oo.com/unlimited/>