ORA-00600 [QCTCTE1] When Running A Select With A Subquery
(Doc ID 2224786.1)
Last updated on FEBRUARY 14, 2019
Applies to:Oracle Database - Enterprise Edition - Version 220.127.116.11 to 18.104.22.168 [Release 11.2 to 12.1]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Information in this document applies to any platform.
All of the following symptoms will be observed:
a/ Alert log will report :
ORA-00600: internal error code, arguments: [qctcte1], , , , , 
b/ The current SQL in the trace will be a query in the format of:
from (select ...
from (...) v3
where not exists
from (...) <view_name>'
where v3.c1 = <view_name>'.c1
group by v3.c2
group by ...;
c/ The error will have a stack trace similar to :-
...qctcte qctoreo qctcopn qctclog qctcpqb qctcpqbl xtydrv kkqcttcalo kkqctdrvJPPD kkqjpdctr...
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