ORA-01638

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

Causa: The value of the RECOVERY_COMPATIBLE parameter is set too low to allow this software version to mount in cluster database mode.

Acción: 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.