!! Please do not post Off Topic to this List !!
Connor,
For the most part I agree, but I have also seen circumstances where a
function (in my case) works very consistently for months and then goes totally
south right out of the clear blue. This gets especially nerve racking when
there are no indications of what the heck has happen, like no locks evident, no
alert log messages, the function is still valid, etc.... I'll finally get
everyone using the function to stop for a couple of moments, recompile it with
no errors, and it returns back to normal. It's just like the DB makes a odd
decision to do something crazy.
Dick Goulet
____________________Reply Separator____________________
Author: =?iso-8859-1?q?Connor=20McDonald?= <[EMAIL PROTECTED]>
Date: 9/13/2001 3:10 AM
!! Please do not post Off Topic to this List !!Are you regularly performing the
appropriate analysis
of optimiser stats?
Its not too uncommon for performance to suddenly go
"over the edge" rather than degrade in the nice linear
fashion. For example, sorts suddenly needing to go to
disk - "just" not fitting into memory etc
hth
connor
--- Csillag Zsolt <[EMAIL PROTECTED]> wrote: >
>
> Hi,
>
> We have a cgi that displays data from oracle tables.
> The program has been running for several months
> perfectly.
>
> Last week every time it started, it seemed to almost
> "freeze" the Oracle
> server ,
> it didn' t end the operation (many Select
> statements).
>
> After several hours of work we removed the /*+
> FIRST_ROWS */ hints from some of
> the selects and the problem went down to 50% ( It
> woult be a long story to
> tell all the details).
>
> At last we recreated _all_ the indexes and the
> problem dissapeared,
> everything was fine again.
>
> Question: Should a "bad" index cause a problem like
> this and why?
> If an index is "bad" how come Oracle doesn' t see
> it?
>
> It is important for me to know that for I don' t
> want to run in this
> problem again.
>
> Thank you
>
>
> Zsolt Csillag
> Hungary
>
> --
> Please see the official ORACLE-L FAQ:
> http://www.orafaq.com
> --
> Author: Csillag Zsolt
> INET: [EMAIL PROTECTED]
>
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=====
Connor McDonald
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