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Dealing With Listener Problems On A Dual 9i/10g Database Installation
May 6, 2004
Mark Rittman

Useful tip from Sonia Brown:

"If you need to install Oracle 10g on a Windows server which already has Oracle 9i or lower installed you may find this of use.

I ran into problems with the listener for the 10g database. Whilst everything installed o.k I was unable to connect to the Oracle 10g database. The problem stems from the fact that the default listener used is the Oracle 9i listener which does not support Oracle 10g. To resolve the issue I did the following:

  • Renamed every listener.ora file other than Oracle 10g's to listener_orig.ora
  • Changed the Oracle 9i listener to manual in the Services Control Panel.
  • Ensure the 10g listener is set to Automatic in the Services Control Panel.
  • Rebooted

This forces the server to use the 10g listener which supports Oracle 10g databases as well as 9i and 8i."



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