ORA-54056
        There is an unsupported operation on a sensitive column "column_name".
        - column_name: The column name being protected with an incorrect security policy.
        Cause
        An attempt was made to either alter the visibility of a sensitive column or change the sensitive column to vector encode.
        Action
        Specify the name of a non-sensitive column, or use DBMS_TSDP_MANAGE.DROP_SENSITIVE_COLUMN PL/SQL procedure to remove the sensitivity of the column before altering it.
        
     
    
    
        ORA-54056
        unsupported operation on sensitive column
        
        
        Cause
        An attempt was made to either alter the visibility of a sensitive column or change the sensitive column to vector encode.
        Action
        Specify the name of a non-sensitive column, or use the DROP_SENSITIVE_COLUMN PL/SQL procedure in the DBMS_TSDP_MANAGE package to remove the sensitivity of the column before altering it.
        
     
    
    
        ORA-54056
        unsupported operation on sensitive column
        
        
        Cause
        An attempt was made to either alter the visibility of a sensitive column or change the sensitive column to vector encode.
        Action
        Specify the name of a non-sensitive column, or use the DROP_SENSITIVE_COLUMN PL/SQL procedure in the DBMS_TSDP_MANAGE package to remove the sensitivity of the column before altering it.