Bind variables limit and overhead in single query

Question

HI,
I've got query with 348 bind variables used in a way like :
select * from table
where
col1 = :1 and col2 = :2
AND apl_id in (:3, :4 ... , :348)
is there any overhead related to such high bv number ?
The session with that query is using about 160MB of PGA (mostly UGA about 150MB).
Is that somehow related ?
I'm on 9.2.0.8 EE , AIX .
Regards
G

Answer 1

You can use an array instead of bind variables, it will give you flexibility and scalabilty,
Example
Note : replace sys.ODCIVarchar2List with desc sys.dbms_debug_vc2coll for 9i
Select emp.* from  emp,
table (sys.ODCIVarchar2List ('SCOTT','ALLEN','KING','KINGDOM'))
where column_value=ename
     EMPNO ENAME      JOB              MGR HIREDATE         SAL       COMM     DEPTNO
      7788 SCOTT      ANALYST         7566 09-DEC-82       3000                    20
      7499 ALLEN      SALESMAN        7698 20-FEB-81       1600        300         30
      7839 KING       PRESIDENT            17-NOV-81       5000                    10
desc sys.ODCIVarchar2List
sys.ODCIVarchar2List VARRAY(32767) OF VARCHAR2(4000)
on 9.2.0.8  USE
desc sys.dbms_debug_vc2coll
sys.dbms_debug_vc2coll TABLE OF VARCHAR2(1000)HTH
SS