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

From: John Hurley <>
Date: Mon, 15 Mar 2010 09:43:13 -0700 (PDT)
Message-ID: <>

On Mar 15, 12:06 pm, "" <> wrote:


> I upgraded a Win2000 (SP4) server from Oracle 9i to (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
> 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.

Windows uses services right? Maybe you need to disable or do something to the 9 version of the listener service before using the 10 version?

Sorry we don't run oracle on windows around here ... just guessing! Received on Mon Mar 15 2010 - 11:43:13 CDT

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