It's backward compatible but not without problems some times. I ran into a problem using 9i listener for a 8.1.7.4 <http://8.1.7.4> DB where it start to run out of file descriptors. Revert back to 8i listener solved the problem. So I had to run two listeners. Regards Richard On 9/21/05, Goulet, Dick <DGoulet@xxxxxxxx> wrote: > > The advice I got from OTS some years ago, like with the release of 8.0, > was to use one listener for all databases on a single server, just use the > latest listener installed as they were backwards compatible. That advice has > been working extremely well ever since. So my question would be why do you > want a separate listener, unless you've got two or more IP addresses, and > consequently NIC's, for one server? > > ------------------------------ > *From:* oracle-l-bounce@xxxxxxxxxxxxx [mailto: > oracle-l-bounce@xxxxxxxxxxxxx] *On Behalf Of *Gogala, Mladen > *Sent:* Wednesday, September 21, 2005 11:20 AM > *To:* 'JayMiller@xxxxxxxxxxxxxxxx'; oracle-l@xxxxxxxxxxxxx > *Subject:* RE: 10.2 listener won't start on same port as 9.2 listener > > Oracle is, quite obviously, listening to my advice, even if some listers > are not. > > -- > > Mladen Gogala > > Ext. 121 > ------------------------------ > > *From:* JayMiller@xxxxxxxxxxxxxxxx [mailto:JayMiller@xxxxxxxxxxxxxxxx] > *Sent:* Tuesday, September 20, 2005 6:07 PM > *To:* oracle-l@xxxxxxxxxxxxx > *Subject:* RE: 10.2 listener won't start on same port as 9.2 listener > > Well, I just got the answer from Oracle and apparently 10.2 is purposely > not allowing you to do this any more. It was done as a fix for another bug > and this behavior will be backported to earlier versions in future releases. > > Looks like we're going to have to go with a single listener, like it or > not. > > Sigh. > >