Backup Recovery Script Deployment

8/13/2019 Backup Recovery Script Deployment

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BACKUP & RECOVERY OF DATABASE

Backup of Database

As system is an electronic device, at any point of time it may come across

with a problem in hardware or at os or at db, due to which data available in db

may be lost.

In order to have security for data and database objects, it is essential that

at the end of a day to go for a backup. It creates a backup of database into

flatfiles. Backup data later can be transfered into other external devices for

security reasons.

Backup can be created in different ways;

1. Full backup

2. Differential backup

3. Files And Filegroups

4. Transaction Log

Syntax: (FULL BACKUP)

BACKUP DATABASE

TO DISK='DRIVE:\FILENAME.BAK'

File name should be provided with an extension as .bak

Creating a backup thru wizard

Connect to Database Engine,

Object Explorer

Databases


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Select the database (Batch33)

Right click, Tasks, click on BACKUP

EXAMPLES:

FULL BACKUP:

BACKUP DATABASE BATCH33 TO DISK='C:\MYDATA\B33DB.BAK'

DIFFERENTIAL BACKUP:

BACKUP DATABASE Batch33 TO DISK='C:\MYDATA\B33DB.BAK'

WITH DIFFERENTIAL

File and File groups:

Restore of Database:

Database can be restored in a same system or it can be on different system.

Syntax:

RESTORE DATABASE db_name FROM DISK='DRIVE:\FNAME.BAK'

EXAMPLE:

USE MASTERRESTORE DATABASE Batch33 FROM DISK='C:\MYDATA\B33DB.BAK'


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Extended Stored Procedures:

A stored procedure contains T-SQL statements and C/C++ code compiled

into .dll file is called extended stored procedure.

Every extended stored procedure starts with XP_

All extended stored procedures are stored in MASTER database.

Extended procedures are used to perform operations in OS and Mail Server.

XP_DIRTREE PATH

XP_FIXEDDRIVES

XP_MSVER

XP_FILEEXIST

XP_CMDSHELL 'os command' ---- It is used to communicate with operatingsystem to execute commands.

NOTE: To work with this extended procedure it should be enabled at

configuration tools:

Start--> Programs--> Microsoft SQL Server 3305--> Configuration Tools--> SQL

Server Surface Area Configuration --> Surface area configuration for features -->

select cmd shell and check the option cmd shell.

(OR)

SP_CONFIGURE 'CMDSHELL',1

RECONFIGURE


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Example:

USE BATCH33

XP_CMDSHELL 'MD C:\SQLS'

EXEC XP_SENDMAIL |

EXEC XP_READMAIL | to interact with mail server.

DEPLOYMENT OF DATABASE:

The process of copying database objects structure with data from one

server to another server is called Deployment of database.

Method 1:

Copy backup file (.bak) to destination system.

Restore it on destination system

Method 2:

Copy data files and log files to destination system

1. Detach the database on Source System

sp_detach_db database_name

(OR)

object explorer --> Databases --> Select the Database (Batch33) --> Right

click ---> tasks---> detach


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2. Copy the database files to same location on destination System

3. Attach these files on destination system.

Syntax:

CREATE DATABASE database_name

ON

(FILENAME='path of a file')

FOR ATTACH

(OR)

Object Explorer--->Databases-->Right click --> Attach

Click Add

Select the mdf from the list of files

After selecting click ok, click ok

Method 3:

Creating a Batch and Script Files:

Batch is nothing but set of T-SQL statements executed under single

execution plan. Every batch is followed by GO (which makes a separate execution

plan).

Creation of any object, setting any property should be presented in

different batches.

Script is nothing but collection of batches saved in a file with .sql extension


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Advantages:

1. Script files are reusable

2. Script files are used to copy database objects from one system to another

system.

Generating T-SQL scripts for existing database:

SQL Server provides Script wizard to generate Scripts for existing database

and other objects.

Object Explorer ----> Connect to Database Engine ----> Expand databases ---->

Select the database(batch33)----> right click Tasks---->Generate Scripts

STEP 1:

Click next

STEP 2:

Select the database(Batch33)Check script all objects in Selected Database

Click next

STEP 3:

Provide Scripting options

Append to File = false / true

If true ----- Select existing file

If false ---- new file is created

Script database create = True / False

If true ---- Create db statement generated

If false --- Create db statement will not be generated


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Script for server version ---- SQL Server 3305

STEP 4:

Script to File = d:\TEST.sql

STEP 5:

Click Finish

Example: (Creating User Defined Script File)

CREATE DATABASE TESTING

GO

USE TESTING

CREATE TABLE EMPT

(EMPNO INT PRIMARY KEY,EN VARCHAR(12))

GO

CREATE VIEW V1

AS

SELECT * FROM EMPTGO

FROM file menu click on save and specify the file name with .SQL extension.

DATA TRANSFORMATION SERVICES (DTS)

OR

SQL SERVER INTEGRATION SERVICES (SSIS)

In SQL Server 2000 we have DTS packages, which are based on COM technology

(Component Object Model)


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In SQL Server 2005 it is introduced with SSIS packages, which is based on .net

technology.

To Import or Export database objects and data from one data source to another

data source, we can use DTS or SSIS packages.

SSIS package will support to import or export the database and data between the

following softwares;

SQL Server MS-Access

SQL Server Oracle

SQL Server SQL Server

SQL Server Text File/XML Files /Excel Files..... etc

DTS or SSIS communicates with any data source with the help of ODBC or OLEDB

or .net data providers.

_______________ ODBC_____________ Data Src

|

DTS/SSIS ______ OLEDB_________ Data Source|

______ .net data providers______Data Source

Data source can be Oracle, SQL Server, .......... etc

SQL NATIVE CLIENT interface can be used to communicate with only SQL Server

ODBC --- Open database Connectivity

OLEDB --- Object Linking Embedding Databases

Working Procedure:

Open Object Explorer


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|

Connect to Database Engine

|

Select the Server

|

Select any database (Batch33)

|

Right Click and select Import or Export Data.

Example 1: Exporting data from SQL Server to Excel Sheet

SELECT database (Batch33), right click, tasks, export data;

STEP 1: click Next

STEP 2: Specify Source Data

Data Source : SQL Native Client

Server Name : test

Database : Batch33

Click Next

STEP 3: Specify Destination

Destination : Microsoft Excel

Excel File Path : C:\MYDATA\B33DB.XLS

Check First row has column names

Click Next

STEP 4: Select Copy data from one or more tables or views


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Click Next

STEP 3 : Specify Destination

Destination : SQL Native Client Server Name : test

Database : Batch33

Click Next

STEP 4 : Select copy data from one or more tables or views

Click Next

STEP 5 : Select tables and views to be copied

Click Next

STEP 6 : Check Execute Immediately

Click Next

STEP 7 : Click Finish

NOTE:

SSIS packages will be stored in MSDB database.

Browsing SSIS packages:

Object Explorer

|

Connect to Integration Services


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|

Select Stored Packages

|

MSDB (System Database)

|

Select package & Right click Run Package

SQL SERVER AGENT:

In SQL Server2005 SQL Server Agent is a service.

It supports to create Jobs, Schedules, Alerts And Operators.

It provides automatic execution of jobs and tasks associated with different

steps automatically based on system date, day and time.

To work with SQL Server Agent it is essential that services should get start.

To start the service the following steps should be used.

start--->programs--->Microsoft SQL Server 3305---> Configuration Tools--->SQL

Server Configuration Manager---> Select SQL Server Agent (double click on the

services and click on start)

Creating a table:

CREATE TABLE EMPJ

(ENO INT IDENTITY,DOJ SMALLDATETIME)

To work with SQL Server Agent;


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Object Explorer

|

Expand SQL Server Agent

Creating a job, Steps and Schedules:

STEP 1:

Select the jobs, right click and new job

Name : ins_rec_job

Owner : sa

Category: [Uncategorized [lOCAL]]

STEP 2:

select "steps" from "select a page window"

Click on New

Step Name : ins_rec

Type : Transact-SQL script (T-SQL)

Database : Batch33

Command : INSERT EMPJ VALUES(getdate())


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Click Ok

STEP 3:

Select "Schedules" from "Select a page window"

Click New

Name : sch_ins_rec

Schedule Type : Recurring

Frequency

Occurs : Daily

Recurrs Every : 1 Day

Daily Frequency

Occurs Every : 1 Min

Click Ok

Click Ok

NOTE:

To execute the created procedure automatically based on a created schedule.

CREATE PROCEDURE insrow


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AS

BEGIN

INSERT EMPJ VALUES(getdate())

END

Under steps window, create a new step and provide the command used to

execute the procedure;

EXEC insrow

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Backup Recovery Script Deployment