Hi,
do you work with ax 30 sp3?
there is a special hotfix, i think number 26??? for axapata with oracle db, because they had a lot of performance problems before.
best regards
sascha
| "hwimmer" <[EMAIL PROTECTED]>
Gesendet von: Axapta-Knowledge-Village@yahoogroups.com 06.05.2005 12:52
|
|
Hi
Having major performance problems with our Oracle DB, I played
around with the First Row Fix Parameter. The Configuration help says
(search for "setting oracle options" in help file):
"Special first Row fix should be checked if performance problems are
experienced while sorting rows within forms."
So I was thinking that this parameter only has the effect whether
a "FIRST ROWS" hint is added to the select generated by a form or
not.
BUT: it also confuses the optimizer with simple SQL statements.
I have a select statement like: (Attention: there is no
a "firstonly" here !!!!)
while select forupdate rc where rc.PackSlipHeader == _lsnr &&
rc.Calc ==
RMCalc::C1 &&
rc.Fil == _fil &&
rc.KalkType ==
KalkType::Item &&
!rc.BSNr &&
rc.CLDy ==
NoYes::Yes &&
rc.ItemQty > 0
When I have the First Row fix turned OFF (=default), the optimizer
chooses an index containing the fields: PackSlipHeader, Fil, ItemId,
ConfigId, ActivityId
and it will make the select in 20 seconds
When I have the First Row fix turned ON, the optimizer chooses an
index containing the field: BSNr
and it will take 15 minutes !!! for the select.
So, the First Row Fix does not only change the way how forms behave
but must also do something to the optimizer ?!?
Did anybody make a similar experience?
Who of you is using the first row fix parameter turned on?
Best regards
Helmut
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