Backup And Recovery In SQL Server Collaborate

Administering and Troubleshooting SQL Server 2000 3C.4Creating a link between SQL Server 2000 and a OLE DB Provider Collaborate Lesson 3C / Slide 2 of 34 ©NIIT Collaborate Creating a li

Trang 1

LESSON 3C

Trang 2

Administering and Troubleshooting SQL Server 2000 3C.2

In this section, tell students about the concept of Object Linking and Embedded databases (OLEDB) OLEDB is a set of Application Programming Interfaces (APIs) that enables the user to connect to different data sources

Ensure that the following datafiles are installed on the student nodes:

Employee.mdb

BooksDetails.xls

Trang 3

In this lesson, you will learn about:

•monitor SQL Server system activity using System Monitor

•optimize and troubleshoot SQL Server system activities

In this section, you will learn to:

monitor SQL Server system activity using System Monitor

optimize and troubleshoot SQL Server system activities

Trang 4

Creating a link between SQL Server 2000 and a OLE DB Provider

Collaborate Lesson 3C / Slide 2 of 34

©NIIT

Collaborate

Creating a link between SQL Server

2000 and a OLE DB Provider

• Sandra is a database administrator at Bluemun Inc The company has its branch offices at various locations in the US These branches use SQL Server 2000 to manage database The company has recently opened two new branch offices at New Jersey and California The branch managers of these branches have been maintaining data in Access and Excel as they do not have SQL Server installed The head office collects the sales reports from all its branch offices and updates the central database data on a weekly basis The two new branch offices have sent sales reports in Access and Excel data formats Therefore, Sandra needs to copy data from these database files to the SQL Server database

Trang 5

©NIIT

Collaborate

Creating a link between SQL Server

2000 and a OLE DB Provider (Contd.)

• To copy data from Access and Excel into SQL Server database, Sandra needs to create a link server using Object Linking and Embedded databases (OLEDB) OLEDB uses the data provider and data source arguments to connect to various databases The table below describes various data sources and data providers:

MS Jet 4.0 OLE DB

Oracle System Identifier

MS Access

Data Provider Data Source

Product

Trang 6

Sandra is a database administrator at Bluemun Inc The company has its branch offices at various locations in the US These branches use SQL Server 2000 to manage database The company has recently opened two new branch offices at New Jersey and California The branch managers of these branches have been maintaining data in Access and Excel as they do not have SQL Server installed The head office collects the weekly sales reports from all its branch offices and updates the data on the central database The two new branch offices have sent sales reports in Access and Excel data formats Therefore, Sandra needs to copy data from these database files to the SQL Server database

To copy data from Access and Excel into SQL Server database, Sandra needs to create

a link server using Object Linking and Embedded databases (OLEDB) OLEDB uses the data provider and data source arguments to connect to various databases Data provider specifies the provider name and the type of data to retrieve For example, SQLOLEDB.1 is the name of the Microsoft OLEDB Provider for SQL Server Data source specifies the name of the database to which the data provider connects

The table below describes the provider name and data sources of the different databases:

Product Data Source Data Provider

MS Access Database File

Location MS Jet 4.0 OLE DB

Identifier MS OLE Provider for Oracle

Sandra would need to create linked servers between SQL Server and Access and Excel, to enable data access from heterogeneous databases After creating linked servers, the data from Access and Excel appear as tables in SQL Server Enterprise Manager

You will now look at the steps to create a link between:

Excel and SQL Server

Access and SQL Server

Trang 7

Creating a link to Microsoft Excel

©NIIT

Collaborate

Creating a link to Microsoft Excel

• The process to create a link between SQL Server and Microsoft Excel involves following steps:

1. Specify range of cells for linking

2. Creating a Linked server using T-SQL

The process to create a link between SQL Server and Microsoft Excel involves following steps:

1 Specifying range of cells for linking

2 Creating a Linked server using T-SQL

1 Specifying the range of cells for linking

To specify the range of cells in the BookDetails Excel file sheet that would be linked

to SQL Server perform the following steps:

1 Open BookDetails in Microsoft Excel Click the InsertÆNameÆDefine

option, to open the Define Name dialog box

Trang 8

2 Next, you need to specify the name of the selected cells in the workbook that

you want to link in the Define Name dialog box Specify the name of the selected cells as Book in the Names in workbook text box, as shown

3 Click the Refers to textbox to specify the range of cells that you need to

copy Drag the cursor to select the range area on the Excel workbook A range identifies a cell or a group of cells in an Excel workbook

Trang 9

4 Click the Add button in the Define Name dialog box to define the new name

for the selected range of cells

5 Click the OK button in the Define Name dialog box to complete the process

6 Save the changes made to the Excel workbook

You have successfully named a range of cells from the workbook that need to be linked to SQL Server

2 Creating a Linked Server Using T-SQL

After specifying the range of cells, you need to create a linked server to connect the range of cells in Excel with SQL Server

To create a linked server, you need to perform the following steps:

1 Select StartÆAll ProgramsÆMicrosoft SQL ServerÆQuery Analyzer to

start SQL Query Analyzer.

2 Notice that the Connect to SQL Server dialog box appears Select the

SERVER option from the SQL Server drop-down list and click the OK button

to connect to the SQL Server

3 The SQL Query Analyzer is opened

Trang 10

4 The syntax for creating a linked server with Excel worksheet is shown below execute sp_addlinkedserver

@server = '<Excel worksheet name>',

@srvproduct= 'Excel',

@provider='Microsoft.Jet.OLEDB.4.0',

@datasrc='<Path of the Excel file>',

@provstr='<Version of Excel>'

Type the code in the SQL Query Analyzer window, as shown

5 To execute the query, click the Execute Query button on the toolbar SQL

Server will display a successful message, as shown

Execute Query Button

Trang 11

6 Close the SQL Query Analyzer window

After creating a linked server, verify if the tables are available in SQL Server Perform the following steps, to verify the link between Excel and SQL Server

1 Select StartÆAll ProgramsÆMicrosoft SQL ServerÆEnterprise Manager,

to open the Enterprise Manager window

2 In the Enterprise Manager window, under the Console Root, expand the default server Under the database server expand the Security option, as

shown

Trang 12

3 Click the Linked Servers option to view the linked servers

4 Expand the linked server, BOOKDETAILS to list the available objects in the

server, as shown

Trang 13

5 Click the Tables option, to view the named ranges as tables The named

ranges appear as tables in Enterprise Manager, as shown

Trang 14

You have successfully created a linked server between the named cell, Book, in Excel and SQL Server

Trang 15

Creating a link to MS Access

©NIIT

Collaborate

Creating a link to MS Access

• Sandra also needs to create a link between the data in Access and SQL Server to compile the sales report sent by the other branch office

• Sandra can use sp_addlinkedserver stored procedure to create a linked server.

Sandra also needs to create a link between the data in Access and SQL Server to compile the sales report sent by the other branch office

You need to perform the following steps to link the data in Access with SQL Server:

1 Open Microsoft Access and create a new mdb file, Books.mdb.

Trang 16

2 Next, you need to create a new table, Suppliers, in the books.mdb database

Create the table with the following fields: Supplierid, Suppliername,

Contactname, Address, City, Phonenumber, Emailaddress, where Supplierid is the primary key, as shown

Trang 17

3 After creating the database in MS Access, close the application

4 Open the SQL Query Analyzer window

5 The syntax for creating a linked server with the Access database is: execute sp_addlinkedserver

'<database name>',

'Access 2000',

'Microsoft.Jet.OLEDB.4.0',

'<database path>'

Trang 18

6 Type the following code in the SQL Query Analyzer window, to create a linked server, as shown

7 Click the Execute Query button on the Query Analyzer window toolbar to

execute the query SQL Server displays a successful message in the message window of SQL Query Analyzer, as shown

Trang 19

8 Finally, close the SQL Query Analyzer window

After creating a linked server, verify if the tables are available in SQL Server Perform the following steps, to verify the link between Access and SQL Server

1 Select StartÆAll ProgramsÆMicrosoft SQL ServerÆEnterprise Manager,

to open the Enterprise Manager window

2 In the Enterprise Manager window, expand database server Under database server, expand the Security option

3 Click the Linked Server option to view the linked servers

4 Expand the linked server, Books to view the objects

5 Click the Tables option, to view the tables Notice that data in MS Access

appear as tables in SQL Server Enterprise Manager.

Trang 20

Administering and Troubleshooting SQL Server 2000 3C.20 You have successfully created a linked server between the table, Suppliers, in the

Books database in Access and SQL Server

Trang 21

Alternative Methods to Monitor SQL Server System Activity

• Query Analyzer

• SQL Profiler

• SQL Server Enterprise Manager

• Transact-SQL

Trang 22

A database administrator can use the Task Manager to monitor SQL Server system activities In addition, a database administrator can use the following tools provided

by SQL Server 2000, to monitor SQL Server system activities and performance of SQL Server 2000:

Using Query Analyzer to Monitor SQL

Server 2000 System Activity

• As a database administrator, you need to monitor the execution of queries to determine the performance of SQL Server 2000 with respect

to the response time of the query The execution of a query is monitored using an Execution plan An Execution plan is a graphical display of the execution steps of a query It also displays the various system resources that are used during the execution of the query

• Using the information displayed in the execution plan you can monitor execution of the queries, identify possible problems areas, and implement techniques to improve query processing and reduce the response time.

As a database administrator, you need to monitor the execution of queries to

determine the performance of SQL Server 2000 with respect to the response time of

the query The execution of a query is monitored using an Execution plan An

Execution plan is a graphical display of the execution steps of a query It also displays

the various system resources that are used during the execution of the query

Trang 23

The following are the steps to monitor the execution of a query using the Query Analyzer:

1 Select StartÆ All ProgramsÆ Microsoft SQL ServerÆ Query Analyzer, to

open the SQL Query Analyzer window

2 Select the Northwind database from the database drop-down list on the tool

bar, as shown

3 Type the following code in the SQL Query Analyzer window, to view the

execution plan of the query, as shown

Trang 24

4 Click the Execute Query button on the Query Analyzer window toolbar to

execute the query

5 The result of the query is displayed in the message window of SQL Query

Analyzer, as shown

Trang 25

6 Select QueryÆ Show Execution Plan and execute the query again to view

the execution plan of the query

7 Click the Execution Plan tab page in the result pane of the SQL Query

Analyzer window The execution plan of the query is displayed in the Execution Plan tab page of the result pane, as shown

Trang 26

Trang 27

8 The Execution Plan tab page of the result pane displays the execution plan of the query in a step-by step manner You can place the mouse pointer on each step to display the system resources used by the query during its execution,

as shown

Trang 28

Trang 29

Using the information displayed in the execution plan you can monitor execution of the queries, identify possible problems areas, and implement techniques to improve query processing and reduce the response time

Trang 30

Using SQL Profiler to Monitor SQL Server 2000 System Activity

©NIIT

Collaborate

Using SQL Profiler to Monitor SQL

Server 2000 System Activity

• SQL Profiler is a graphical tool that is used to identify performance related problems of SQL Server 2000

• SQL Profiler uses the concept of Trace Templates to capture information related to specific server events

• Trace templates store information that can be used to monitor SQL Server system activity, identify stored procedures that take long time to execute, and identify deadlocks

Trang 31

©NIIT

Collaborate

Using SQL Profiler to Monitor SQL

Server 2000 System Activity (Contd.)

• The following table lists the various pre-configured templates provided by SQL Profiler:

2000 SQL Profiler uses the concept of Trace Templates to capture information related

to specific server events Trace templates store information that can be used to monitor SQL Server system activity, identify stored procedures that take long time to execute, and identify deadlocks

Trace templates are files with extension TRC SQL Profiler provides pre-configured trace templates that define the type of information to be captured and monitored

Trang 32

The following table lists the various pre-configured templates provided by SQL Profiler:

SQLProfilerSP_Counts Captures the number of stored procedures

that are executed and also captures the number of times each stored procedure has been executed

SQLProfilerStandards Captures general information regarding the

execution of SQL Server batches and stored procedures

SQLProfilerTSQL Captures each Transact-SQL statement

that has been executed in the specified order and the number of times each statement is executed

SQLProfilerTSQL_Duration Captures each Transact-SQL statement

that has been executed in the specified order and displays this information after arranging it on the basis of time taken to run a statement

SQLProfilerTSQL_Grouped Captures each Transact-SQL statement

that has been executed in the specified order and compiles this information according to the user issuing these statements

SQLProfilerTSQL_Replay Captures details about each Transact-SQL

statement executed in the specified order SQLProfilerTSQL_SPs Captures details about the execution of

each stored procedure, also including the Transact-SQL commands of each stored procedure

SQLProfilerTuning Captures information and binary data

about each stored procedure that is executed

Using these built-in templates and the information they capture, you can monitor specific server events, identify possible problem areas, and implement techniques to improve the performance of events

Trang 33

Using Enterprise Manager to Monitor SQL Server System Activity

©NIIT

Collaborate

Using Enterprise Manager to Monitor

SQL Server System Activity

• In addition, you can monitor SQL Server system activities using SQL Server 2000 Enterprise Manager Enterprise Manager provides the Current Activity option under the

Console RootÆMicrosoft SQL ServersÆSQL Server GroupÆDefault ServerÆManagement folder This displays detailed information regarding:

• currently active processes.

• user activity.

• locks held by each process.

• locks held on various objects

Định dạng
Số trang	66
Dung lượng	1,31 MB