How to fix the Oracle error ORA-15021: parameter “string” is not valid in string instance?

In this post, you’ll learn more about the Oracle ErrorORA-15021: parameter “string” is not valid in string instance with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-15021: parameter “string” is not valid in string instance

Reason for the Error ORA-15021: parameter “string” is not valid in string instance

The specified parameter was not supported when starting an instance of this type.

How to fix the Error ORA-15021: parameter “string” is not valid in string instance ?

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

Delete the specified parameter from the INIT.ORA file.