sql server execution plan

... 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...

Ngày tải lên: 08/03/2014, 22:20

... 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...

Ngày tải lên: 28/10/2013, 18:15

... 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...

Ngày tải lên: 26/01/2014, 10:20

... 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...

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...

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...

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...

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...

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...

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,...

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...

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...

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...

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, ...

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...

Ngày tải lên: 04/07/2014, 23:20

Ngày tải lên: 04/07/2014, 23:20

Ngày tải lên: 04/07/2014, 23:20

Ngày tải lên: 04/07/2014, 23:20

Ngày tải lên: 04/07/2014, 23:20

Ngày tải lên: 04/07/2014, 23:20