Oracle Solution for Error ora-32012

ORA-32012: SPFILE format is inconsistent with value of COMPATIBLE parameter

What triggered the Error:

The SPFILE was in H.A.R.D. (Hardware Assisted Resilient Data) compliant format but the value of the COMPATIBLE parameter was set to pre-11.0. This is not allowed since Oracle has a policy of irreversible compatibility advance.

What should we do to fix it:

Change the value of the COMPATIBLE parameter to be 11.0 or higher.