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Do you know how to handle bulk exception in Oracle PLSQL?

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Question added by Bibin Kallunkal , Oracle PLSQL Developer,ERP administrator, Oracle Developer, Software Engineer, IT Administration , Intercare
Date Posted: 2013/07/08
Amer Al-Ashi
by Amer Al-Ashi , OBIEE & Technical Apps Consultant , Versos

use exception when others

Bibin Kallunkal
by Bibin Kallunkal , Oracle PLSQL Developer,ERP administrator, Oracle Developer, Software Engineer, IT Administration , Intercare

yes you are right but we can use save exceptions with error number -24381

We can use SAVE EXCEPTIONS to handle the bulk exceptions.The purpose of save exceptions is logging the error into error logging table and if you want to commit those inserted data you can commit itotherwise rollback it based on the count of error logging table.Here is an example of SAVE EXCEPTIONS in bulk operation

 

Create Sample Original Table:

-----------------------------

SQL> CREATE TABLE ann_tab(id1    NUMBER(10) NOT NULL,

                            2                        ename  VARCHAR2(20)

                             3                        );

Table created.

-----------------------------------------------------------------

Create Sample error logging table

--------------------------

SQL> CREATE TABLE err_log(record_no  NUMBER(10),

 2                       err_msg    VARCHAR2(200), 

3                       ename      VARCHAR2(20) 

4                       );

Table created.

------------------------------------------------------------------

Without Save Exceptions we cant able to get the error record information. We are getting the error message and everything got rollback.

SQL> DECLARE 

2   TYPE ann_nest IS TABLE OF ann_tab%ROWTYPE; 

3   v_annnest ann_nest := ann_nest(); 

4  BEGIN 

5     SELECT id1,ename 

6     BULK COLLECT INTO v_annnest

 7     FROM (SELECT1 id1,'ANN1' ename FROM dual 

8     UNION ALL 

9     SELECT2 id1,'ANN2' ename FROM dual

 10     UNION ALL

 11     SELECT NULL id1,'ANN3' ename FROM dual 

12     ); 

13    FORALL i IN1..v_annnest.COUNT

 14     INSERT INTO ann_tab(id1,ename) 

15                 VALUES(v_annnest(i).id1,v_annnest(i).ename); 

16  COMMIT; 

17  EXCEPTION 

18  WHEN OTHERS THEN 

19   RAISE; 

20  END;

 21  /

DECLARE*ERROR at line1:ORA-01400: cannot insert NULL into ("SCOTT"."ANN_TAB"."ID1")ORA-06512: at line19

---------------------------------------------------------------------------------------------

Check the table count everything rolledback

SQL> SELECT COUNT(1) FROM ann_tab;  COUNT(1)

---------- 

       0

----------------------------------------------------------------------------------------------

With Save exception option to save the error record information into err_log table and rolled back the original insert

SQL> DECLARE 

2   TYPE ann_nest IS TABLE OF ann_tab%ROWTYPE; 

3   v_annnest ann_nest := ann_nest();

 4   l_error_count NUMBER; 

5   l_error_idx   NUMBER; 

6   l_ename      VARCHAR2(20);

 7   l_error_msg VARCHAR2(1000); 

     ------ User defined exception name 

8   dml_errors EXCEPTION;     

----- Mapping predefined exception to user defined name

 9   PRAGMA EXCEPTION_INIT(dml_errors,-24381); 

10  BEGIN 

11     SELECT id1,ename 

12     BULK COLLECT INTO v_annnest 

13     FROM (SELECT1 id1,'ANN1' ename FROM dual

 14     UNION ALL 

15     SELECT2 id1,'ANN2' ename FROM dual

 16     UNION ALL 

17     SELECT NULL id1,'ANN3' ename FROM dual 

18     ); 

19  BEGIN      

------- Forall with save exceptions

 20    FORALL i IN1..v_annnest.COUNT SAVE EXCEPTIONS 

21     INSERT INTO ann_tab(id1,ename)

 22                 VALUES(v_annnest(i).id1,v_annnest(i).ename); 

23  EXCEPTION      ----- Raise user defined exception name if any dml errors occurred

 24    WHEN dml_errors THEN 

25        FOR j IN1..SQL%BULK_EXCEPTIONS.COUNT

 26         LOOP

 27         l_error_idx := SQL%BULK_EXCEPTIONS(j).error_index; ----- Collection position 

28         l_error_msg := SQLERRM(-SQL%BULK_EXCEPTIONS(j).ERROR_CODE); ---- Error message 

29         l_ename := v_annnest(SQL%BULK_EXCEPTIONS(j).error_index).ename; ---- Error data 

30          ---- Insert error information into error logging table             INSERT INTO err_log(record_no,

 31                              err_msg,

 32                              ename

 33                              )

 34                       VALUES(l_error_idx, 

35                              l_error_msg, 

36                              l_ename 

37                              ); 

38         END LOOP; 

39        COMMIT; 

40  END;    

---- Check the count of error logging table 

41   SELECT COUNT(1) INTO l_error_count 

42   FROM err_log;    

---- If error occurred rollback else commit 

43    IF (l_error_count >0) THEN 

44     ROLLBACK; 

45    ELSE 

46     COMMIT; 

47    END IF;

 48  EXCEPTION 

49  WHEN OTHERS THEN 

50   RAISE; 

51  END; 

52  /PL/SQL procedure successfully completed.---------------------------------------------------------------------------------------------------------

Check the error logging table data

SELECT * FROM err_log;

RECORD_NO   ERR_MSG                                ENAME

---------   -------------------------------------  -------

3            ORA-01400: cannot insert NULL into ()    ANN3

-----------------------------------------------------------------------------------------------------------

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