Why is the GETDATE() an invalid identifier

Question

Why is the GETDATE() an invalid identifier says Oracle Sql Developer tool when I debug this code:

CREATE OR REPLACE TRIGGER SPName
AFTER UPDATE
ON TableName 
FOR EACH ROW
BEGIN
    UPDATE TableName SET LastModifiedDate = GETDATE() WHERE TableName.DET_ID = :new.DET_ID;
END;

Answer 1

I think you want SYSDATE, not GETDATE(). Try it:

UPDATE TableName SET LastModifiedDate = (SELECT SYSDATE FROM DUAL);