that's interesting... since the data dictionary is NOT analyzed, setting
optimizer_mode=choose would force the query against dba_extents to RULE which it
what it is supposed to be doing anyway, Hm. The question now is, what is the
optimizer_mode set to when the problem happens? Did any of the data dictionary
tables get accidentally analyzed? And -- how many extents are in use in the
database? Could it just be a symptom of missized tables and indexes so that the
number of extents is way high?
Although Oracle is *supposed* to allow unlimited extents, in practice anything
higher than 4096 extents in an object (at least in 8i) tends to slow things
down.
|--------+----------------------->
| | |
| | |
| | jack_silvey@y|
| | ahoo.com |
| | |
| | 05/09/2002 |
| | 02:18 PM |
| | Please |
| | respond to |
| | ORACLE-L |
| | |
|--------+----------------------->
>----------------------------------------------------|
| |
| To: [EMAIL PROTECTED] |
| cc: (bcc: Rachel Carmichael) |
| Subject: Re: DBA_EXTENTS problem |
>----------------------------------------------------|
Babu,
We had a similiar problem, and setting optimizer_mode
= choose in our session solved it. Something to do
with optimizer and DD access. Give that a try. I had
the same problem with DBA_INDEXES and that fixed it.
hth,
Jack
--- Janardhana Babu Donga <[EMAIL PROTECTED]> wrote:
> Dear List,
>
> When I query dba_extents , Iam getting response
> after half an hour to 40
> minutes, but when I query any other dictionary view
> it is spontaneous.
> Everything else is fine in the database and there
> are no problems, except
> the above problem. Iam not getting any clue how to
> fix this. Iam thinking of
> running catalog.sql and catproc.sql as a last
> resort. Iam not sure it would
> fix the problem. Please let me know if there is any
> other way to fix this
> problem.
>
> Thanks,
> Babu
>
>
> --
> Please see the official ORACLE-L FAQ:
> http://www.orafaq.com
> --
> Author: Janardhana Babu Donga
> INET: [EMAIL PROTECTED]
>
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