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by: gary |
last post by:
hello everyone,
we dropped the clustered & nonclustered indeces on a table, then
rebuilt them. logical fragmentation is near zero, but extent
fragmentation is about 40%. how can this be if the indeces are brand
new?
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by: Tron Thomas |
last post by:
Given the following information about memory management in C++:
-----
The c-runtime dynamic memory manager (and most other commercial memory
managers) has issues with fragmentation similar to a hard drive file
system.
Over time, the more often use call new/delete or alloc/free, there
will be
gaps and fragments in the heap. This can lead to inefficient use of
available memory, as well as cache-hit inefficiencies.
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by: sql_server_2000_user |
last post by:
Hi,
I have a table with about 305 million rows, and a composite primary key
that consists of an ascending int and an ascending varchar(18), which
is typically of length 13. Even if all the keys used the full 18
characters of the varchar, it seems to me each key should be 22 bytes,
so the index should be roughly 6.4GB. However, the size of the index as
shown in EM is about 24GB, and this is slowing everything down
considerably. Does...
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by: uli2003wien |
last post by:
Dear group,
we are running a SQL-Server Database which is about 30 GB large. The
purpose of this database is to contain periodic data from automatic
devices which insert values into some tables.
Unfortunately most of these tables don't have a key (and a key can only
be introduced when the application programmers have changed their
software). Tables have this structure
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by: wackyphill |
last post by:
After rebuilding an index, it still shows as the same amount of
fragmentation. ANy ideas what's wrong?
I'm determining which indexes to rebuild using the following query:
SELECT
OBJECT_NAME(i.object_id) AS TableName,
i.name AS IndexName,
ips.avg_fragmentation_in_percent
FROM sys.dm_db_index_physical_stats(DB_ID(), NULL, NULL, NULL,
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by: Raziq Shekha |
last post by:
Hi Folks,
SQL Server 2000 SP3 on Windows 2000. I have a database on which I ran
the command :
dbcc dbreindex ('tablename')
go
for all tables in the database. Then I compared the dbcc showcontig
with all_index output from before and after the reindex and on the
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by: rcamarda |
last post by:
I thought I would delve into index fragmentation and I found some
great sql from many posters (thanks Erland!).
My question is how bad is bad? I know this is very subjective.
Some scripts I found would reindex if the LogicalFragmenation is over
30%.
I have some tables that are 98% (I'm guessing really bad). I know it
all depends..
more as a learning point: I found a table that had over 30%
logicalfragmentation, I dropped the indexes,...
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by: Shameer |
last post by:
I monitor the index fragmentation through dbcc showcontig command , i get result as
Pages Scanned
Extents Scanned
Extent Switches
Avg. Pages per Extent
Scan Density
Logical Scan Fragmentation
Extent Scan Fragmentation
Avg. Bytes Free per Page
Avg. Page Density (full).
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by: Shameer |
last post by:
Hi,
I monitor the index fragmentation through dbcc showcontig command , i get result as
Pages Scanned
Extents Scanned
Extent Switches
Avg. Pages per Extent
Scan Density
Logical Scan Fragmentation
Extent Scan Fragmentation
|
by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
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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: 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...
|
by: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
|
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: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
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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: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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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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