19.x :upgrade failed with ORA-00600: internal error code, arguments: [kqd-objerror$], [U], , , [DBA_TAB_COLS_V$], 
(Doc ID 2688041.1)
Last updated on JULY 07, 2020
Applies to:Oracle Database - Enterprise Edition - Version 220.127.116.11 and later
Information in this document applies to any platform.
On : 18.104.22.168 version,
When attempting to upgrade to 19.6
the following error occurs.
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