Example 2-12 Errors With Duplicate Identifiers in Same Scope

DECLARE
   valid_id BOOLEAN;
   valid_id VARCHAR2(5);  -- not allowed, duplicate identifier
BEGIN
-- The error occurs when the identifier is referenced,
-- not in the declaration part.
   valid_id := FALSE; -- raises an error here
END;
/

Example 2-12 Errors With Duplicate Identifiers in Same Scope

DECLARE
   valid_id BOOLEAN;
   valid_id VARCHAR2(5);  -- not allowed, duplicate identifier
BEGIN
-- The error occurs when the identifier is referenced,
-- not in the declaration part.
   valid_id := FALSE; -- raises an error here
END;
/