Oracle Solution for Error ora-10647

Solution for Oracle Error ORA-10647

ORA-10647: Tablespace other than SYSTEM, string, string not found in read only mode

What triggered the Error:

When SYSTEM tablespace is being migrated, tablespaces other than the three should be ALTERed to read only.

What should we do to fix it:

Alter the tablespace status to read only and retry migration.