ORA-01463
        cannot modify column datatype with current constraint(s)
        
        
        Cause
        An attempt was made to modify the datatype of column which has referential constraints; or has check constraints which only allows changing the datatype from CHAR to VARCHAR or vise versa.
        Action
        Remove the constraint(s) or do not perform the offending operation.
        
     
    
    
        ORA-01463
        cannot modify column datatype with current constraint(s)
        
        
        Cause
        An attempt was made to modify the datatype of column which has referential constraints; or has check constraints which only allows changing the datatype from CHAR to VARCHAR or vise versa.
        Action
        Remove the constraint(s) or do not perform the offending operation.
        
     
    
    
        ORA-01463
        cannot modify column datatype with current constraint(s)
        
        
        Cause
        An attempt was made to modify the datatype of column which has referential constraints; or has check constraints which only allows changing the datatype from CHAR to VARCHAR or vise versa.
        Action
        Remove the constraint(s) or do not perform the offending operation.