Help with a Before Delete Triggger

Question

Hello:
When I do a delete operation on a table that has the following trigger, it comes up with an error message,
":ORA-04091: table INNOBOX.SUGGEST is mutating, trigger/function may not see it
ORA-06512: at "INNOBOX.DELSUGGEST", line 44
ORA-04088: error during execution of trigger 'INNOBOX.DELSUGGEST'"
Can somebody tell me what I am doing wrong?
CREATE OR REPLACE TRIGGER INNOBOX.delSuggest
BEFORE DELETE
ON INNOBOX.SUGGEST
     FOR EACH ROW
          BEGIN
               INSERT INTO INNOBOX.SUGGEST_LOG
                    Sugg_Log_ID_N,
                    Sugg_No_N,
                    Cat_CD_C,
                    Liaison_CD_C,
                    S_Desc_C,
                    L_Desc_C,
                    S_Stat_CD_C,
                    S_Stat_DT,
                    Benefit_C,
                    Cost_Sav_C,
                    Resol_C,
                    D_Stat_CD_C,
                    D_Stat_DT,
                    ACD_CD_C,
                         Cr_By_ID_C,
                    Cr_DT,
                    Up_By_ID_C,
                    Up_DT     
               VALUES
                         INNOBOX.Suggest_Log_Seq.NEXTVAL,
                    :old.Sugg_No_N,
                    :old.Cat_CD_C,
                    :old.Liaison_CD_C,
                    :old.S_Desc_C,
                    :old.L_Desc_C,
                    :old.S_Stat_CD_C,
                    :old.S_Stat_DT,
                    :old.Benefit_C,
                    :old.Cost_Sav_C,
                    :old.Resol_C,
                    :old.D_Stat_CD_C,
                         :old.D_Stat_DT,
                         'D',
                         :old.Cr_By_ID_C,
                         :old.Cr_DT,
                         :old.Up_By_ID_C,
                         :old.Up_DT
               DELETE SUGGEST WHERE Sugg_No_N = :old.Sugg_No_N
          END;
Thanks.
Venki

Answer 1

Hi,
Try to remove the last line from your trigger :
DELETE SUGGEST WHERE Sugg_No_N = :old.Sugg_No_N, you delete a line from a table for which there is the same before delete trigger, also there is a muttating trigger.
HTH,
Nicolas.