Re: Parallel Query work on 1 CPU machine?

I will be interesting to know the answer as well, actually, is there a guideline /system specification especially in hardware-wide from Oracle for the platform Oracle support(NT/SUN/AIX..) to configure parallel execution?

Can somebody provide where to look for this kind of document/.pdf? I tried OTN but no luck!

Tom

"Maria Walski" <mwalski_at_classicplan.com> wrote in message news:331x6.313$tG2.97887_at_dfiatx1-snr1.gtei.net...
> Hello,
>
> I am trying to play on a test machine with the Parallel Query Option. I
> cannot seem to get a query to perform a parallel full table scan. I have
> searched on metalink and I believe I have all the proper init.ora
> parameters set:
> NT 4.0, Oracle 8.1.7 Enterprise Edition.
> parallel_threads_per_cpu = 2
> parallel_min_servers = 0
> parallel_max_servers = 5
>
> The test machine only has 1 CPU, does the parallel query even work if the
> machine only has 1 CPU? I realize you need more than 1 cpu for it to be
 very
> beneficial, however, I am not really concerned with the performance, but I
> would just like to see a query use the parallel option.
>
> To Test:
>
> I built a 1,000,000 row table and I am using the following query:
>
> SELECT /*+ FULL(TEST) PARALLEL */ COUNT(*)
> FROM TEST
>
> When I do an explain plan, I cannot seem to get any parallel execution.
>
> I also tried
> SELECT /*+ FULL(TEST) PARALLEL(3) */ COUNT(*)
> FROM TEST
>
> Is there something I am missing or must you have > 1 CPU? Is 1,000,000
 rows
> too small?
>
> Thanks, Jim
>
>
>
>
>
>
>
>
Received on Sat Mar 31 2001 - 00:03:32 CST