Oracle FAQ Your Portal to the Oracle Knowledge Grid
HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US
 

Home -> Community -> Usenet -> c.d.o.server -> Re: HELP! Parallel query problem

Re: HELP! Parallel query problem

From: Ross Mohan <postmaster_at_127.0.0.1>
Date: Sat, 29 May 1999 01:36:35 -0400
Message-ID: <7inuc6$600@sjx-ixn6.ix.netcom.com>


version of Oracle, please?

( don't think it's a problem, but might as well ask: "degree" on the table, please )

kal121_at_yahoo.com wrote in message <7ika29$86d$1_at_nnrp1.deja.com>...
>Hello all,
>
>Here is a very strange problem:
>
>I was running a query with the following hint:
>/*+ ORDERED PARALLEL (r, 16) */
>
>init.ora has:
>parallel_min_servers = 2
>parallel_max_servers = 8
>
>The query is running against a partitioned table.
>Using this hint and partitioning, it ran at 1.3 minutes (which is great,
>considering it used to run at 20 minutes!)
>
>So, just for fun, I set max_servers to 32 in both the hint and the
>init.ora file. Well, the query didn't do so hot - so I shut down Oracle
>and restarted it with parallel_max_servers set back to 16 and changed
>the hint to use 16 also.
>
>I fully expected the query to perform back at 1.3 minutes as it had
>previously. Well, it didn't! Now it's running at 4 minutes and it won't
>budge. I've restarted my machine (WinNT 4.0). Nothing. Still 4 minutes.
>I've dropped the partitioned table, rebuilt the partitions. Still 4
>minutes!
>
>So what happened here??? Please help. Desperate.
>
>Thanks.
>
>
>Sent via Deja.com http://www.deja.com/
>Share what you know. Learn what you don't.
Received on Sat May 29 1999 - 00:36:35 CDT

Original text of this message

HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US