Verify Parallel Query is working?

From: Jim Walski <jwalski3_at_classicplan.com>
Date: Thu, 29 Mar 2001 17:53:09 -0800
Message-ID: <F001.002DC8F9.20010329175544@fatcity.com>

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.

Is there something I am missing or must you have > 1 CPU? Is 1,000,000 rows too small?

Thanks, Jim

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Author: Jim Walski
INET: jwalski3_at_classicplan.com

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