the errors seen above are encountered because the NLS_LENGTH_SEMANTICS initialisation parameter has been set to CHAR. This is not a supported setting for this parameter in an Oracle Fusion Middle ware installation. This is documented in the Release Notes for each platform.
To remove the ORA-01450 errors when creating the MDS and SOAINFRA components ensure that the requirement for NLS_LENGTH_SEMANTICS=BYTE is met.
To check the current setting of NLS_LENGTH_SEMANTICS, login to the target database as SYSDBA and issue the following command:
SQL> show parameters nls_length_semantics
SQL> alter system set NLS_LENGTH_SEMANTICS=BYTE scope=both
After resetting the parameter you should restart your database for the change to take effect.