ORA-00600  after APEX upgraded from 4.2 to 5.1
(Doc ID 2237109.1)
Last updated on AUGUST 04, 2018
Applies to:Oracle Database - Enterprise Edition - Version 220.127.116.11 and later
Information in this document applies to any platform.
1. While submitting an apex page , ends with below internal error, also logged in the database alert.log:
ORA-00600: internal error code, arguments: 
2. Current SQL may contain the table APEX_COLLECTIONS
3. Failing function stack similar to:
kksfbc [cursor]<-- Signaling
An upgrade of Oracle Application Express ( APEX ) from version 4.2 to 5.1.
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