Hi,
Did u check your cusror using the index on the column last_name or not.
(and a.last_name like p_in_lastname || '%';) . What kind of index
do you have on that column. Normal Btree or Function based index?
Is your parition and index got analyzed?
Thnks,
Ramsubb
On 2/20/13, Ninja Li <nickli2...@gmail.com> wrote:
> Hi,
>
> I would like to ask for some advice on the design of PL/SQL procedure. I am
>
> trying to improve the performance of a PL/SQL procedure which allows a user
>
> to do search by their last name and returns their account information. I
> will be joining two tables, customer_info (with last name as a column ) and
>
> account_details, with 8 million and 50 million rows respectively by user ID
>
> on each table. The procedure is already in place and very straight forward,
>
> which goes something like the following:
>
> procedure name_search ( p_in_user_id number, p_in_lastname varchar2 ,,,)
> {
> .......
> open cursor for
> select a.column1, a.column2, b.column1, b.column2, .....
> from customer_info a, account_details b
> where a.user_id = b.user_id
> and a.last_name like p_in_lastname || '%';
> }
>
> The execution time varies from 3 to 15 seconds.
>
> I would like to ask if there are other ways to write the procedure, such as
>
> using with clause or global temporary tables which can significantly
> improve performance in your experience.
>
> The tables already have partition and indexes on last_names, user_id in
> place.
>
> Thanks in advance.
>
> Nick
>
>
>
>
>
>
>
>
>
>
>
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