Oracle Solution for Error ora-01638

ORA-01638: parameter string does not allow ORACLE version string to mount cluster database

What triggered the Error:

The recovery compatible parameter is set too low to allow this software version to mount in cluster database mode.

What should we do to fix it:

Either use an earlier software release or advance the recovery_compatible parameter. If this happens when no recovery_compatible parameter has been specified then set it to the current software release.