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by: Felix |
last post by:
Dear Sql Server experts:
First off, I am no sql server expert :)
A few months ago I put a database into a production environment.
Recently, It was brought to my attention that a particular query that
executed quite quickly in our dev environment was painfully slow in
production. I analyzed the the plan on the production server (it
looked good), and then tried quite a few tips that I'd gleaned from
reading newsgroups. Nothing worked....
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by: Jesper Jensen |
last post by:
Hello group.
I have an issue, which has bothered me for a while now:
I'm wondering why the column statistics, which SQL Server wants me to
create, if I turn off auto-created statistics, are so important to the
optimizer?
Example: from Northwind (with auto create stats off), I do the following:
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by: Metal Dave |
last post by:
Hello,
A script we run against the database as part of the upgrade of our product
is failing with the following message:
ALTER TABLE ALTER COLUMN EncodedID failed because STATISTICS hind_61_3
accesses this column
The line that fails is:
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by: Lyn Duong |
last post by:
Hi,
I have a job that performs a runstats on tables in my database (db2 V8
on AIX) and the syntax is
db2 runstats on table schema.tabname with distribution and detailed
indexes all.
when I look at the statistics in syscat.indexes table, the values for
AVERAGE_SEQUENCE_FETCH_PAGES,AVERAGE_RANDOM_FETCH_PAGES etc (for
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by: Fan Ruo Xin |
last post by:
I ran the runstats and try to collect sub-element statistics, but for some
reason, the value of that two fields in syscat.columns is always -1.
Does anyone have any idea?
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by: Chris Weston |
last post by:
Hi. I have automatic statistic update turned on for all my databases. Is
this an overhead I can do without? Could I update them overnight when the
database is hardly in use?
Thanks
--
Chris Weston
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by: romixnews |
last post by:
Hi,
I'm facing the problem of analyzing a memory allocation dynamic and
object creation dynamics of a very big C++ application with a goal of
optimizing its performance and eventually also identifying memory
leaks. The application in question is the Mozilla Web Browser. I also
have had similar tasks before in the compiler construction area. And
it is easy to come up with many more examples, where such kind of
statistics can be very...
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by: Allan Ebdrup |
last post by:
Hi
We have a large class library of different classes, now we are going to
implement a lot of usage statistics that we need, stuff like how many times
a user has logged in, how many times a message has been read, how many times
a ad has been shown and so on.
Now I'm wondering what would be a good OO organization of this data, should
the statistics be part of the objects they are for, or should statistics be
seperate.
Perhaps each object...
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by: ADezii |
last post by:
In last week's Tip, I showed you how to use the ISAMStats Method of the DBEngine (DAO) to return vital statistics concerning Query executions such as: Disk Reads and Writes, Cache Reads and Writes, and Locks placed and released. As promised, in this week's Tip I'll demonstrate how to accomplish parallel functionality within the context of ADO using the OpenSchema Method of the Connection Object.
We indicate to the OpenSchema Method that we...
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by: Quasar |
last post by:
Hi everybody!
I''ve created a script that enable the statistics for a specific DB:
#!/bin/sh
if ; then
echo Enabling monitoring switches for ${1}
db2 connect to ${1}
db2 update monitor switches using TABLE on UOW on TIMESTAMP on
STATEMENT on BUFFERPOOL on LOCK on SORT on
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by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
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by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
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by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
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by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
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by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
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by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
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by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
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by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
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by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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