ORA-600 ,  Experienced After Enabling Dataguard
(Doc ID 747051.1)
Last updated on AUGUST 04, 2018
Applies to:Oracle Server - Enterprise Edition - Version: 10.2.0.2 to 10.2.0.4
This problem can occur on any platform.
After enabling Dataguard, the following errors are encountered:
ORA-12571: TNS:packet writer failure
ORA-00600: internal error code, arguments: , , , , , , , 
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