ORA-04091 - Table mutating

Question

Hi,
I have a trigger which executes a stored procedure.
Trigger
=======
CREATE OR REPLACE TRIGGER mhubadmin.call_proc_ratesheet_new
after INSERT OR delete ON mhubadmin.pvt_br_ratesheet
FOR EACH ROW
declare
var_orgid number;
begin
if inserting then
select org_child_id into var_orgid from business_relationship where br_id=:new.br_id;
mhubadmin.proc_ratesheet_new(var_orgid);
else
select org_child_id into var_orgid from business_relationship where br_id=:old.br_id;
mhubadmin.proc_ratesheet_new(var_orgid);
end if;
end;
Stored Procedure
==============
CREATE OR REPLACE PROCEDURE proc_ratesheet_new(var_orgid in number)
IS
cursor c3 is select distinct(purs.user_id) from hubuser hu
inner join PVT_USER_RATESHEET purs on hu.USER_ID=purs.USER_ID
               where hu.ORG_ID=var_orgid;
cursor c1(varUser_id number) is select purs.user_id,purs.ratesheet_id from hubuser hu
inner join PVT_USER_RATESHEET purs on hu.USER_ID=purs.USER_ID
               where hu.ORG_ID=var_orgid and purs.USER_ID=varUser_id;
cursor c2(varUser_id number) is select hu.user_id,pbr.ratesheet_id from HUBUSER hu
                         inner join BUSINESS_RELATIONSHIP br on hu.ORG_ID=br.ORG_CHILD_ID
                         inner join PVT_BR_RATESHEET pbr on br.BR_ID=pbr.BR_ID
                              where hu.user_id in(select distinct(purs.USER_ID) from hubuser hu
                                   inner join PVT_USER_RATESHEET purs
                                                                 on hu.USER_ID=purs.USER_ID
                                             where hu.ORG_ID=var_orgid) and hu.user_id=varUser_id;
foundFlag boolean;
BEGIN
     for c3var in c3 loop
for c2var in c2(c3var.user_id) loop
          foundFlag:=false;
          for c1var in c1(c3var.user_id) loop
               if c2var.ratesheet_id=c1var.ratesheet_id then
                    foundFlag:=true;
                         exit;
                    end if;
               end loop;
               if foundFlag=False then
               insert into pvt_user_ratesheet (username_ratesheet_id,user_id,ratesheet_id) values (SEQ_USER_RATESHEET.nextval,c3var.user_id,c2var.ratesheet_id);
               end if;
          end loop;
end loop;
     for c3var in c3 loop
          for c1var in c1(c3var.user_id) loop
          foundFlag:=false;
          for c2var in c2(c3var.user_id) loop
                    if c1var.ratesheet_id=c2var.ratesheet_id then
                    foundFlag:=true;
                    exit;
                    end if;
               end loop;
               if foundFlag=False then
               delete from pvt_user_ratesheet where user_id=c3var.user_id and ratesheet_id=c1var.ratesheet_id;
               end if;
          end loop;
end loop;
--EXCEPTION
--- WHEN OTHERS THEN
--- DBMS_OUTPUT.put_line (SQLCODE||' '|| SQLERRM);
END;
But while firing this trigger I am getting an error like this,
ORA-04091: table MHUBADMIN.PVT_BR_RATESHEET is mutating, trigger/function may not see it
ORA-06512: at "MHUBADMIN.PROC_RATESHEET_NEW", line 14
ORA-06512: at "MHUBADMIN.PROC_RATESHEET_NEW", line 25
ORA-06512: at "MHUBADMIN.CALL_PROC_RATESHEET_NEW", line 6
ORA-04088: error during execution of trigger 'MHUBADMIN.CALL_PROC_RATESHEET_NEW'
Regards,
Mathew

Answer 1

Yes, and I'm reading this on a computer screen!
What functional requirement are you trying to achieve?
And have you googled? If so, you would have found this
http://asktom.oracle.com/tkyte/Mutate/index.html
Cheers,
Colin