sql server execution plan
SQL Server Execution Plans Second Edition pot
Ngày tải lên :
08/03/2014, 22:20
... 1: Execution Plan Basics
Execution Plan Formats
While SQL Server produces a single execution plan for a given query, we can view it in
three different ways:
• as graphical plans
• as text plans
• ... actual
execution plan.
Getting the actual plan
Actual execution plans, unlike estimated execution plans, do not represent the calcu-
lations of the optimizer. Instead, this execution plan shows ... size.
26
Chapter 1: Execution Plan Basics
Execution Plan Reuse
It is expensive for the server to go through all the processes described above that are
required to generate execution plans. While SQL Server...
- 333
- 3.4K
- 1
Getting a SQL Server Query Plan
Ngày tải lên :
28/10/2013, 18:15
... handling SQL Server locking
Miscellaneous
Alters current session settings for miscellaneous SQL Server
functionality
Query
Execution
Alters current session settings for query execution ... the SQL statement while the second contains rows detailing the plan. For batch
SQL statements, the result sets alternate between statement and plan for each statement in
the batch.
SHOWPLAN_TEXT ... or
SHOWPLAN_ALL, see the topic "SET" in Microsoft SQL Server Books Online.
[ Team LiB ]
"ORDER BY CompanyName";
// Retrieve the plan into DataReader.
SqlDataReader...
- 3
- 419
- 0
Tài liệu Getting a SQL Server Query Plan pdf
Ngày tải lên :
26/01/2014, 10:20
...
Recipe 10.9 Getting a SQL Server Query Plan
Problem
You need to retrieve information about how query statements are executed by the SQL
Server.
Solution
Use the SET SHOWPLAN_TEXT statement. ...
SqlConnection conn = new SqlConnection(
ConfigurationSettings.AppSettings[" ;Sql_ ConnectString"]);
// Create and execute the command to retrieve the plan.
SqlCommand cmd = new SqlCommand("SET ... handling SQL Server locking
Miscellaneous
Alters current session settings for miscellaneous SQL Server
functionality
Query
Execution
Alters current session settings for query execution...
- 3
- 367
- 0
Brad’s Sure Guide to SQL Server Maintenance Plans- P1 pps
Ngày tải lên :
04/07/2014, 23:20
...
Brad’s Sure Guide to
SQL Server
Maintenance Plans
By Brad M. McGehee
First published by Simple Talk Publishing 2009
Summary 28
Chapter 2: Before you Create any Maintenance Plans… 29
How to Configure ... Configure a SQL Server Agent Operator 43
Summary 46
Chapter 3: Getting Started with the Maintenance Plan Wizard 47
Exploiting the Full Potential of the Wizard 48
Investigating Existing Maintenance Plans ... Approaches to Database Maintenance 19
Maintenance Plan Wizard 19
Maintenance Plan Designer 21
T -SQL Scripts 22
PowerShell Scripts 24
Core Maintenance Plan Tasks 24
Backup Databases 25
Verify the Integrity...
- 5
- 329
- 0
Brad’s Sure Guide to SQL Server Maintenance Plans- P2 pdf
Ngày tải lên :
04/07/2014, 23:20
... Introduction to the Maintenance Plan Designer 184
Features Unique to the Maintenance Plan Designer 185
Starting the Maintenance Plan Designer 186
Exploring the Maintenance Plan Designer 188
Object Explorer ... Task 208
Reorganize Index Task 209
Update Statistics Task 210
Shrink Database Task 211
Execute SQL Server Agent Job Task 211
Database and Backup Component Selection 151
Backup File Storage 155
Verify ... 186
Exploring the Maintenance Plan Designer 188
Object Explorer 189
Maintenance Task Toolbox 189
Subplans and the Design Surface 190
Designer Menu bar 196
Summary 202
Chapter 17: Configuring Maintenance...
- 5
- 325
- 0
Brad’s Sure Guide to SQL Server Maintenance Plans- P3 pptx
Ngày tải lên :
04/07/2014, 23:20
... Software, is a SQL Server
DBA, trainer and writer with over 15 years' SQL Server experience, and over 6 years' training
experience. He is an accomplished Microsoft SQL Server MVP, and ... community site SQL- Server- Performance.Com, which he operated from 2000
through 2006, writing over one million words on SQL Server topics.
Brad is a frequent speaker at SQL PASS, European PASS, SQL Connections, ... 217
Execute T -SQL Statement Task 219
Notify Operator Task 221
Summary 225
Chapter 18: Subplans and Precedence 226
Subplans 226
Using a Single Subplan: Pros and Cons 227
Using Multiple Subplans: Pros...
- 5
- 293
- 0
Brad’s Sure Guide to SQL Server Maintenance Plans- P4 doc
Ngày tải lên :
04/07/2014, 23:20
... the real world.
SQL Server Editions Covered
in this Book
This book covers the use of the Maintenance Plan Wizard and the Maintenance Plan
Designer for SQL Server 2005 and SQL Server 2008, including ... Maintenance Plan
Wizard and the Maintenance Plan Designer.
Maintenance Plan Wizard
The Maintenance Plan Wizard is one of two tools that SQL Server provides to create
Maintenance Plans.
A note ... to SQL Server 2008.
All the screenshots and examples are from SQL Server 2008, which, on occasion, varies from
SQL Server 2005. When there are significant differences, I will point them out.
SQL...
- 5
- 289
- 0
Brad’s Sure Guide to SQL Server Maintenance Plans- P5 ppsx
Ngày tải lên :
04/07/2014, 23:20
... instances, although multi -server Maintenance
Plans can be created.
• Bugs in some earlier versions of the Wizard. If you use SQL Server 2005 Service Pack 2
or higher, or SQL Server 2008, then you ... is very alien to many DBAs. On top of this, the DBA still needs to know T -SQL and
SQL Server internals, as well as SQL Server Management Objects (SMO), and the OS Object
Model (assuming you decide ...
more time-consuming to write and debug than T -SQL. Also, whereas the appropriate T -SQL
maintenance script can be run on most any SQL Server, many older servers may not have
PowerShell installed.
As...
- 5
- 301
- 0
Brad’s Sure Guide to SQL Server Maintenance Plans- P6 ppsx
Ngày tải lên :
04/07/2014, 23:20
... Older Data from msdb
The SQL Server msdb database stores historical data about various activities, such as details
about backups, SQL Server Agent jobs, and Maintenance Plan execution. If left unattended, ... unneeded backups are
removed from a SQL Server on a regular basis.
What's Outside the Scope of the
Maintenance Plan Wizard and
Designer?
While Maintenance Plans are a convenient way to perform ... modifications but, unfortunately,
both can hurt SQL Server& apos;s performance. Wasted space reduces the number of rows that can
be stored in SQL Server& apos;s data cache, which can lead to increased...
- 5
- 369
- 0
Brad’s Sure Guide to SQL Server Maintenance Plans- P7 pptx
Ngày tải lên :
04/07/2014, 23:20
... need a single profile for use by your Maintenance Plans.
Enter a descriptive Profile name, such as "Maintenance Plans." If your SQL Server instance
has multiple mail profiles, then you'll ... profile is a collection of one or more SMTP accounts that can be used by SQL Server to
send messages. In other words, when SQL Server wants to send a message, the message is
sent to the profile, ... it.
Chapter 2: Before you Create any Maintenance Plans…
35
• Port number – the port number used by your organization's SMTP server. E-mail
servers communicate through specific TCP/IP ports,...
- 5
- 321
- 0
Brad’s Sure Guide to SQL Server Maintenance Plans- P8 ppt
Ngày tải lên :
04/07/2014, 23:20
... Before you Create any Maintenance Plans…
38
Figure 2.8: You have to specify whether a mail profile is public or private.
As shown in Figure 2.8, your Maintenance Plan profile has been created (it's ... Figure 2.8, your Maintenance Plan profile has been created (it's called
"Maintenance Plan& quot;). Now you have to assign the profile as either public or private. A
private profile is ... (with access to msdb) to send mail. To keep your setup as simple as possible, make the
Maintenance Plan profile public, by selecting the checkbox under Public then clicking Next
to move on to the...
- 5
- 265
- 0
Brad’s Sure Guide to SQL Server Maintenance Plans- P9 pdf
Ngày tải lên :
04/07/2014, 23:20
... process.
How to Configure a SQL Server
Agent Operator
When we configure a Maintenance Plan to send an e-mail, created with either the
Maintenance Plan Wizard or the Maintenance Plan Designer, we aren't ... because a
Maintenance Plan cannot be configured to use an operator until the operator has first been
created and configured.
To create a new operator, open SSMS, navigate to the SQL Server instance you ... open up the SQL Server Agent folder, navigate to the Operators folder,
right-click on it and select New Operator, as shown in Figure 2.15.
Chapter 2: Before you Create any Maintenance Plans…
42
Figure...
- 5
- 312
- 0
Brad’s Sure Guide to SQL Server Maintenance Plans- P10 pot
Ngày tải lên :
04/07/2014, 23:20
... created with the Maintenance Plan Wizard or Maintenance
Plan Designer provides only the core components of a SQL Server database maintenance
plan. As discussed in Chapter 1, there are additional ... contents of an existing Maintenance
Plan, using the Maintenance Plan Designer.
Privileges required for managing Maintenance Plans
In order to view Maintenance Plans from within SSMS, or to create ... Started with
the Maintenance Plan Wizard
Now that we have all the preliminaries out of the way, we can focus on how to create a
Maintenance Plan using the Maintenance Plan Wizard. The marketing...
- 5
- 282
- 0
Brad’s Sure Guide to SQL Server Maintenance Plans- P11 docx
Ngày tải lên :
04/07/2014, 23:20
...
Maintenance Plan that hurts your server& apos;s performance.
Chapter 3: Getting Started with the Maintenance Plan Wizard
52
To change the name of an existing plan
…Simply right-click on the plan in ... Maintenance Plan Wizard
54
required, I choose to separate user and system database Maintenance Plans because the tasks
I perform on them are somewhat different, and using two Maintenance Plans, instead ... Maintenance Plan to run once a week, then all the
tasks you have selected for the Maintenance Plan will run only once a week. You can also
select this option if you want to create a Maintenance Plan, ...
- 5
- 303
- 0
Brad’s Sure Guide to SQL Server Maintenance Plans- P12 docx
Ngày tải lên :
04/07/2014, 23:20
... automatically.
Execute SQL Server Agent Job
The Execute SQL Server Agent Job task allows you to select SQL Server Agent jobs
(ones you have previously created), and to execute them as part of a Maintenance Plan. ... separate subplans that
will take care of deleting each of these three kinds of files within a single Maintenance Plan
(see Chapter 17). However, if you want to use the Maintenance Plan Wizard ... Getting Started with the Maintenance Plan Wizard
58
Figure 3.6: The above tasks are commonly selected when creating a Maintenance Plan
using the Maintenance Plan Wizard.
Note that, despite the...
- 5
- 253
- 0
