My Oracle Support Banner

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 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:
sqlplus /nolog
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):
ORA-00600: internal error code, arguments: [728], [sga mismatch], [need relink], [], [], [], [], []


To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.