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Database Connection Fails With ORA-00600: [728], [sga mismatch], [need relink] (Doc ID 1391251.1)

Last updated on AUGUST 04, 2018

Applies to:

Oracle Database - Enterprise Edition - Version 8.1.7.0 and later
Information in this document applies to any platform.

Symptoms

Connecting to the instance with "/ AS SYSDBA" fails with the following error, and as a result the instance cannot be started:
sqlplus /nolog
SQL> connect /as sysdba;
ERROR:
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):
ORA-00600: internal error code, arguments: [728], [sga mismatch], [need relink], [], [], [], [], []

Cause

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