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During Upgrade, DBUA Changes LOCAL_LISTENER Parameter Setting (Doc ID 737339.1)

Last updated on MARCH 31, 2022

Applies to:

Oracle Net Services - Version to [Release 10.1 to 12.2]
Oracle Database - Enterprise Edition - Version and later
Information in this document applies to any platform.
This document describes a problem that can occur during a database upgrade where the DBUA can change the LOCAL_LISTENER.
It has been reported that it can also set LOCAL_LISTENER to null.


After upgrading the  Oracle database using DBUA, you find that the value for LOCAL_LISTENER has been changed in the pfile:  

For example, the parameter might have been changed from:

 DBUA is designed to use the tnsnames alias reference using the nomenclature "LISTENER_<sid>" rather than a full connect string for the LOCAL_LISTENER parameter. 

The goal of this Note is to answer the following questions:

1. What are the advantages of tnsnames.ora, over inline specification?
2. How to revert the changes done by DBUA to tnsnames.ora file?


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