12c DBUA picks the wrong oracle home and SID while upgrade

(Doc ID 2239688.1)

Last updated on MARCH 07, 2017

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.0 to 12.1.0.2 [Release 11.2 to 12.1]
Information in this document applies to any platform.

Symptoms

After invoking DBUA from the target ( 12.1.0.2 Home ) , it does not show the right Oracle Home for Source database
It does not show the SID of the database to be upgraded


Checking the /etc/oratab file shows that the database to be upgraded is rightly mentioned

For this case :

 

 

Though the TEST11 database is rightly mentioned in the oratab file , the dbua was always picking wrong Oracle Home of “/app/oracle/product/test20/12.1.0.2” .
Also , it was not listing the SID TEST11 to upgrade

Cause

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