How can I fix Trigger errors? Oracle 19 Express - oracle

Question

I would like to track user activities for a certain table.
For this I have created a table in which I can insert the audit data:
CREATE TABLE "AUDIT_FINALPAPERS"
( "TBLID" NUMBER,
"NAME" VARCHAR2(10),
"REMARKS" VARCHAR2(255),
"AUDIT_USER" VARCHAR2(50),
"AUDIT_DATE" DATE,
"AUDIT_ACTION" VARCHAR2(30)
)
Then created a trigger to track user activities and insert data into the audit table:
CREATE OR REPLACE TRIGGER AUDIT_TBL1
2 -- starts on every update, insert or delete command
3 AFTER INSERT OR DELETE OR UPDATE
4 ON TBL1
5 FOR EACH ROW
6 DECLARE
7 -- variable which declares if update, delete or insert process
8 v_trg_action VARCHAR2 (30);
9 v_user VARCHAR2 (30);
10 BEGIN
11 v_user := SYS_CONTEXT ('APEX$SESSION', 'APP_USER');
12
13 IF UPDATING
14 THEN
15 -- when update
16 v_trg_action := 'UPDATED.';
17 ELSIF DELETING
18 THEN
19 -- when delete
20 v_trg_action := 'DELETED.';
21 ELSIF INSERTING
22 THEN
23 -- when insert
24 v_trg_action := 'SUBMITTED.'; -- aKtion
25 ELSE
26 -- if something else
27 v_trg_action := NULL;
28 END IF;
29
30 IF v_trg_action IN ('DELETED.', 'UPDATED.')
31 THEN
32 -- if v_trg_action is DELETE or UPDATE then insert old table values
33 INSERT INTO AUDIT_TBL1 (TBLID,
34 NAME,
35 REMARKS,
36 AUDIT_USER,
37 AUDIT_DATE,
38 AUDIT_ACTION)
39 VALUES (:OLD.TBLID,
40 :OLD.NAME,
41 :OLD.REMARKS,
42 v_user,
43 SYSDATE,
44 v_trg_action);
45 ELSE
46 INSERT INTO AUDIT_TBL1 (TBLID,
47 NAME,
48 REMARKS,
49 AUDIT_USER,
50 AUDIT_DATE,
51 AUDIT_ACTION)
52 VALUES (:NEW.TBLID,
53 :NEW.NAME,
54 :NEW.REMARKS,
55 v_user,
56 SYSDATE,
57 v_trg_action);
58 END IF;
59 -- about the insert command on the audit table
60 -- for current apex user:SYS_CONTEXT('APEX$SESSION','APP_USER');
61 -- for date: SYSDATE
62 -- for sql command: v_trg_action
63 END AUDIT_TBL1;
64 /
However I get error: PLS-00049: bad bind variable
What exactly does this mean and how can this be solved?

Answer 1

Looks like a wrongly reported error. When I ran your code, it went well except for this part as you named the variable v_trg_aKtion (instead of aCtion)
21 ELSIF INSERTING
22 THEN
23 -- when insert
24 v_trg_action := 'SUBMITTED.'; -- aKtion
Have a look; trigger created.
SQL> CREATE OR REPLACE TRIGGER AUDIT_TBL1
2 -- starts on every update, insert or delete command
3 AFTER INSERT OR DELETE OR UPDATE
4 ON TBL1
5 FOR EACH ROW
6 DECLARE
7 -- variable which declares if update, delete or insert process
8 v_trg_action VARCHAR2 (30);
9 v_user VARCHAR2 (30);
10 BEGIN
11 v_user := SYS_CONTEXT ('APEX$SESSION', 'APP_USER');
12
13 IF UPDATING
14 THEN
15 -- when update
16 v_trg_action := 'UPDATED.';
17 ELSIF DELETING
18 THEN
19 -- when delete
20 v_trg_action := 'DELETED.';
21 ELSIF INSERTING
22 THEN
23 -- when insert
24 v_trg_action := 'SUBMITTED.'; -- aKtion
25 ELSE
26 -- if something else
27 v_trg_action := NULL;
28 END IF;
29
30 IF v_trg_action IN ('DELETED.', 'UPDATED.')
31 THEN
32 -- if v_trg_action is DELETE or UPDATE then insert old table values
33 INSERT INTO AUDIT_TBL1 (TBLID,
34 NAME,
35 REMARKS,
36 AUDIT_USER,
37 AUDIT_DATE,
38 AUDIT_ACTION)
39 VALUES (:OLD.TBLID,
40 :OLD.NAME,
41 :OLD.REMARKS,
42 v_user,
43 SYSDATE,
44 v_trg_action);
45 ELSE
46 INSERT INTO AUDIT_TBL1 (TBLID,
47 NAME,
48 REMARKS,
49 AUDIT_USER,
50 AUDIT_DATE,
51 AUDIT_ACTION)
52 VALUES (:NEW.TBLID,
53 :NEW.NAME,
54 :NEW.REMARKS,
55 v_user,
56 SYSDATE,
57 v_trg_action);
58 END IF;
59 -- about the insert command on the audit table
60 -- for current apex user:SYS_CONTEXT('APEX$SESSION','APP_USER');
61 -- for date: SYSDATE
62 -- for sql command: v_trg_action
63 END AUDIT_TBL1;
64 /
Trigger created.
SQL>