How to fix the Oracle error ORA-09986: wrong number of bytes read from SGA definition file?

In this post, you’ll learn more about the Oracle ErrorORA-09986: wrong number of bytes read from SGA definition file with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-09986: wrong number of bytes read from SGA definition file

Reason for the Error ORA-09986: wrong number of bytes read from SGA definition file

Struct skgmsdef size differs from no. of bytes read from SGA file

How to fix the Error ORA-09986: wrong number of bytes read from SGA definition file ?

You can fix this error in Oracle by following the below steps

Compare the two struct definitions and ensure that they are identical in size and structure.