A very strange error.
No information on metalink about it.
The reason was :
one of views had the columns as 'UNDEFINED' , when we try to see in toad ( no varchar, date or other type of data).
Recreating the view was the solution.
Oracle Database Configurations using Docker and Vagrant - Oracle now makes available configurations for the Database (and other products) on both Docker and Vagrant via GitHub. Good time to familiarize oneself wit...
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