Unable To Startup Database due to ORA-00600 [ksulnf : SSTDNNLANG init failed], 
(Doc ID 1500646.1)
Last updated on AUGUST 04, 2018
Applies to:Oracle Server - Standard Edition - Version 22.214.171.124 to 126.96.36.199 [Release 11.2]
Information in this document applies to any platform.
On : 188.8.131.52 version, Internals Errors (ORA-600 & ORA-7445)
When attempting to STARTUP the database, and when Oracle is trying to create the SGA,
the following error occurs.
The call stack as shown in the trace file at the time of the error includes:
ksulnf kscnfy ksmcsg opistr_real opistr opiodr ttcpip opitsk opiino opiodr opidrv sou2o opimai_real ssthrdmain main libc_start_main start
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