Re: changing session parameters after logon trigger

On 10/13/05, Milen Kulev <makulev_at_gmx.net> wrote: ...
> alter session set optimizer_mode = first_rows_10;
> alter session set hash_join_enabled = false;
> alter session set "_optimizer_sortmerge_join_enabled" = false;
> alter session set "_optimizer_join_sel_sanity_check" = true;
>

...
>
> When I set "_optimizer_sortmerge_join_enabled" to TRUE AND
> optimizer_dynamic_sampling to 0, then I am getting 0.1 seconds elapsed
> time!
>

Regardless of your testing results or advice you get from this list, you should probably discuss this with Sieble, er, Oracle?, support.

As these are underscore parameters, Oracle doesn't directly support them, Siebel *should* be able to offer some guidance.

--
Jared Still
Certifiable Oracle DBA and Part Time Perl Evangelist
--
http://www.freelists.org/webpage/oracle-l