Persistent "Service_died * 1183" Listener errors after Listener upgraded to 12c but Database still on 9i (Doc ID 2268317.1)

Last updated on MAY 19, 2017

Applies to:

Oracle Net Services - Version 12.1.0.2 and later
Information in this document applies to any platform.

Symptoms

After upgrading the TNSListener to 12.1.x the Listener log is filling up very quickly with the following errors:


On the same machine, there is a 9.2 Database in a separate ORACLE_HOME that has been started.

Changes

 There was an upgrade of the Listener to 12c or an installation of a very old Database such as 9i

Cause

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