Database Connection Fails With ORA-00600: , [sga mismatch], [need relink]
(Doc ID 1391251.1)
Last updated on MARCH 13, 2019
Applies to:Oracle Database - Enterprise Edition - Version 126.96.36.199 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
Oracle Database Cloud Exadata Service - Version N/A and later
Information in this document applies to any platform.
Connecting to the instance with "/ AS SYSDBA" fails with the following error, and as a result the instance cannot be started:
SQL> connect /as sysdba;
ORA-12547: TNS:lost contact
In the instance alert file the following error is shown at the same time (there may not be any additional error raised in the alert file as well):
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