G-2310: Avoid using CHAR data type.

Major

Reliability

Reason

char is a fixed length data type, which should only be used when appropriate. char columns/variables are always filled to its specified lengths; this may lead to unwanted side effects and undesired results.

Example (bad)

create or replace package types_up
is
   subtype description_type is char(200);
end types_up;
/

Example (good)

create or replace package types_up
is
   subtype description_type is varchar2(200 char);
end types_up;
/