Do you have CURSOR_SPACE_FOR_TIME set to true?
On 10/20/2003 12:39:25 PM, elain he wrote:
> Hi,
> I'm trying to troubleshoot ora-1000 (max cursors exceeded) for an
> application. When I ran the following query on the SID(192),
>
> select hash_value ,count(*)
> from v$open_cursor
> where sid=192
> group by hash_Value
> having count(*) >1;
>
> HASH_VALUE COUNT(*)
> ---------- ----------
> 670480087 5
> 563605149 3
> 1016653255 10
> 2005317811 3
>
> hash value: 1016653255 is a simple SQL statement- select sysdate from
> dual;
>
> the results returned hash_values with counts as high as 10. I
> understand that even if cursors are closed, they are still cached in
> server memory and will still show up in v$open_cursor. I do not
> understand why there are duplicate sql statements in v$open_cursor
> for the SID. Does that mean that Oracle is not reusing the cursor for
> whatever reasons and thus opens new ones? If that is true, what could
> be the reasons that 'select sysdate from dual' could not be reused?
>
> Thanks.
>
> elain
>
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> Please see the official ORACLE-L FAQ: http://www.orafaq.net
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> Author: elain he
> INET: elainhe_at_hotmail.com
>
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Mladen Gogala
Oracle DBA
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Received on Mon Oct 20 2003 - 12:34:25 CDT
