PL/SQL trouble at create trigger - oracle

Question

CREATE TABLE INVENTORY(
INVENTORY_ID NUMBER(6) PRIMARY KEY,
ITEM_NAME VARCHAR2(255),
QUANTITY NUMBER,
PRICE NUMBER,
ITEM_SIZE VARCHAR(255),
INVENTORY_VALUE NUMBER);
===
CREATE TABLE INVENTORY_AUDIT(
DATE_CHANGED DATE,
USER_NAME VARCHAR2(30),
INV_ID NUMBER(6),
OLD_QUANTITY NUMBER,
NEW_QUANTITY NUMBER,
CONSTRAINT fk_INV_ID
FOREIGN KEY (INV_ID)
REFERENCES INVENTORY (INVENTORY_ID));
===
CREATE OR REPLACE TRIGGER INV_CHG
BEFORE UPDATE OF QUANTITY
ON INVENTORY
FOR EACH ROW
BEGIN
IF :NEW.QUANTITY <> :OLD.QUANTITY THEN
INSERT INTO INVENTORY_AUDIT
VALUES (GETDATE(), v('APP_USER'), :NEW.INVENTORY_ID, :OLD.QUANTITY, :NEW.QUANTITY)
END IF;
END;
===
ORA-24344: success with compilation error
ORA-06512: at "SYS.WWV_DBMS_SQL_APEX_190200", line 592
ORA-06512: at "SYS.DBMS_SYS_SQL", line 1658
ORA-06512: at "SYS.WWV_DBMS_SQL_APEX_190200", line 578
ORA-06512: at "APEX_190200.WWV_FLOW_DYNAMIC_EXEC", line 2057
3. ON INVENTORY
4. FOR EACH ROW
5. BEGIN
6. IF :NEW.QUANTITY <> :OLD.QUANTITY THEN
7. INSERT INTO INVENTORY_AUDIT
===
I tried to create trigger that triggered by inventory table's quantity change.
But it throws an error and syntax looks fine for me.
I tried without IF whole statement but still had same problem.
That means my create trigger statement has problem right?
But I cannot find it.

Answer 1

Two things:
missing semi-colon at the end of the INSERT statement
use sysdate instead of getdate
Here's how:
SQL> CREATE OR REPLACE TRIGGER INV_CHG
2 BEFORE UPDATE OF QUANTITY
3 ON INVENTORY
4 FOR EACH ROW
5 BEGIN
6 IF :NEW.QUANTITY <> :OLD.QUANTITY THEN
7 INSERT INTO INVENTORY_AUDIT
8 VALUES (sysdate, --> sysdate instead of getdate()
9 v('APP_USER'),
10 :NEW.INVENTORY_ID,
11 :OLD.QUANTITY,
12 :NEW.QUANTITY
13 ); --> missing semi-colon here
14 END IF;
15 END;
16 /
Trigger created.
SQL>