Home » Infrastructure » Windows » Cannot access Oracle 9 Database after Oracle 10 Client is installed (Oracle 10g)
Cannot access Oracle 9 Database after Oracle 10 Client is installed [message #334933] Fri, 18 July 2008 13:53 Go to next message
deng
Messages: 3
Registered: July 2008
Junior Member
We get the following popup message, after the Oracle 10g client was installed on our computer.

"This application has failed to start because oracore9.dll was not found. Re-installing the application may fix the problem."

It seems appears that the Oracle 10g installation broke an application that uses Oracle 9.

Does anyone know how to fix this and is there a way to access both Oracle versions?

Thanks for your help.
Re: Cannot access Oracle 9 Database after Oracle 10 Client is installed [message #334934 is a reply to message #334933] Fri, 18 July 2008 14:15 Go to previous messageGo to next message
Michel Cadot
Messages: 64151
Registered: March 2007
Location: Nanterre, France, http://...
Senior Member
Account Moderator
Check if PATH still contains the directory of 9i DLL.

Regards
Michel
Re: Cannot access Oracle 9 Database after Oracle 10 Client is installed [message #334935 is a reply to message #334934] Fri, 18 July 2008 14:20 Go to previous messageGo to next message
deng
Messages: 3
Registered: July 2008
Junior Member
The path does not contain the directory for the 9i DLL. The only paths I see are for the oracle\product\10.1.0\Client\bin (and others under this level)

Regards,
David
Re: Cannot access Oracle 9 Database after Oracle 10 Client is installed [message #334938 is a reply to message #334935] Fri, 18 July 2008 14:49 Go to previous messageGo to next message
Michel Cadot
Messages: 64151
Registered: March 2007
Location: Nanterre, France, http://...
Senior Member
Account Moderator
So add it.

Regards
Michel
Re: Cannot access Oracle 9 Database after Oracle 10 Client is installed [message #334942 is a reply to message #334938] Fri, 18 July 2008 15:02 Go to previous messageGo to next message
deng
Messages: 3
Registered: July 2008
Junior Member
The folder for Oracle 9 client does not exist. I'm assuming that the Oracle 10 client installation removed it since the application use to connect to the Oracle 9 database.

I suppose that I could try to install the Oracle 9 client, but can it co-exist with the Oracle 10 client?

Regards,
David
Re: Cannot access Oracle 9 Database after Oracle 10 Client is installed [message #334980 is a reply to message #334942] Sat, 19 July 2008 01:20 Go to previous message
Michel Cadot
Messages: 64151
Registered: March 2007
Location: Nanterre, France, http://...
Senior Member
Account Moderator
Oracle installation does not remove anything unless you install the new version in the same home than the last one but in this case OUI poped up a warning box saying that it will remove the content of the directories and you said you're OK with this.

Now you have to reinstall 9i client.
I advice you to deinstall 10g and reinstall both 9i and 10g.

Regards
Michel
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