Database Maintenance

Morris Caen

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Agenda Explain Maintenance Components.

Create a Maintenance Plan using the SQL Studio Manager Wizard.

Create a Maintenance Plan using T-SQL.

Schedule a Maintenance Plan.

Maintenance Components

Maintenance Components• Check Database Integrity

• Shrink Database

• Reorganize Index

• Rebuild Index

• Update Statistics

Create a Maintenance Plan using the Wizard

Create a Maintenance Plan using the Wizard

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• Open SQL Studio Manager

• Connect to your SQL Server

• Expand Management

• Right Click Maintenance Plans

• Select Maintenance Plan Wizard

Create a Maintenance Plan using the Wizard

• Click Next

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Create a Maintenance Plan using the Wizard

• Enter a Name for the Maintenance Plan

• Click Change to create a Schedule

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Create a Maintenance Plan using the Wizard

• Select Recurring and Enabled

• Occurs Weekly

• Assign a Time inside of the Maintenance Window defined in Radiant Management Studio

• Click OK

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Create a Maintenance Plan using the Wizard

• Click Next

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Create a Maintenance Plan using the Wizard

• Select the Tasks for Maintenance

• Select Check Database Integrity

• Select Shrink Database

• Select Rebuild Index

• Select Update Statistics

• Select Clean Up History

• Select Maintenance Cleanup Task

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Create a Maintenance Plan using the Wizard

• Review Tasks

• Click Next

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Create a Maintenance Plan using the Wizard

• Select Specific Databases, then select the CounterPoint database

• Click Next

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Create a Maintenance Plan using the Wizard

• Select Specific Databases, then select the CounterPoint database

• Depending on the size of the database, increate the Shrink database when it grows beyond field.

• Click Next

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Create a Maintenance Plan using the Wizard

• Select Specific Databases, then select the CounterPoint database

• Click Next

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Create a Maintenance Plan using the Wizard

• Select Specific Databases, then select the CounterPoint database

• Click Next

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Create a Maintenance Plan using the Wizard

• Click Next

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Create a Maintenance Plan using the Wizard

• Click Next

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Create a Maintenance Plan using the Wizard

• Click Next

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Create a Maintenance Plan Using T-SQL

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Create a Maintenance Plan Using T-SQL

• Database Integrity Check

– dbcc checkdb('DEMOAPRL')

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Create a Maintenance Plan Using T-SQL

• Shrink Database

– dbcc shrinkdatabase (DEMOAPRL,5)

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Create a Maintenance Plan Using T-SQL

• Rebuild Indexes– DBCC DBREINDEX(IM_ITEM,' ',90)– Rebuilding Indexes only runs on one table at a time so a cursor is generally

used to rebuild all indexes

DECLARE @TableName varchar(255)DECLARE @TableSchema varchar(255)

DECLARE TableCursor CURSOR FORSELECT table_name, table_schema FROM information_schema.tablesWHERE table_type = 'base table'

OPEN TableCursor

FETCH NEXT FROM TableCursor INTO @TableName, @TableSchemaWHILE @@FETCH_STATUS = 0BEGINset @TableName=@TableSchema+'.'+@TableNameSET ARITHABORT ONDBCC DBREINDEX(@TableName,' ',90)FETCH NEXT FROM TableCursor INTO @TableName, @TableSchemaEND

CLOSE TableCursor

DEALLOCATE TableCursor

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Create a Maintenance Plan Using T-SQL

• Update Statistics

– exec sp_updatestats

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Create a Maintenance Plan Using T-SQL

• One Script:DECLARE @dbname varchar(100),

@SQL1 varchar(2500),

@CRLF varchar(2)

SET @dbname='DEMOAPRL'

SET @CRLF = Char(13) + Char(10)

set @sql1 =

'use ' + @dbname + @CRLF

set @SQL1 = @SQL1 + 'dbcc checkdb(''' + @dbname + ''')'

exec (@sql1)

set @sql1 =

'use ' + @dbname + @CRLF

set @SQL1 = @SQL1 + 'dbcc shrinkdatabase (' + @dbname + ',5)'

exec (@sql1)

set @sql1 =

'use ' + @dbname + @CRLF

exec (@sql1)

set @SQL1=

'DECLARE @TableName varchar(255)

DECLARE @TableSchema varchar(255)

DECLARE @dbname1 varchar(50)

DECLARE TableCursor CURSOR FOR

SELECT table_name, table_schema FROM ' + @dbname + '.information_schema.tables

WHERE table_type = ''base table'‘

OPEN TableCursor

FETCH NEXT FROM TableCursor INTO @TableName, @TableSchema

WHILE @@FETCH_STATUS = 0

BEGIN

set @dbname1=''DEMOAPRL''

set @TableName=@dbname1+''.''+@TableSchema+''.''+@TableName

SET ARITHABORT ON

DBCC DBREINDEX(@TableName,'' '',90)

FETCH NEXT FROM TableCursor INTO @TableName, @TableSchema

END

CLOSE TableCursor

DEALLOCATE TableCursor'

exec (@SQL1)

set @sql1 =

'use ' + @dbname + @CRLF

set @SQL1 = @SQL1 + 'exec sp_updatestats'

exec (@sql1)

Creating a Schedule Using Studio Manager for a T-SQL Script

Creating a Schedule Using Studio Manager for a T-SQL Script

• Under SQL Server Agent, Right Click on Jobs

• Select New Job

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• Assign a Name to the Job

• Make sure it is Enabled

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Creating a Schedule Using Studio Manager for a T-SQL Script

• Click Steps

• Select New

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Creating a Schedule Using Studio Manager for a T-SQL Script

• Give a Name to the Step

• Select the CounterPoint Database

• Open or Paste your Maintenance Script into the Window

• Click OK

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Creating a Schedule Using Studio Manager for a T-SQL Script

• Select Schedules

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Creating a Schedule Using Studio Manager for a T-SQL Script

• Click New

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Creating a Schedule Using Studio Manager for a T-SQL Script

• Select Recurring

• Occurs Weekly

• Set Occurs once at: to a time after the database backup completes and inside the CounterPoint Maintenance Window defined in Radiant Management Console.

• Click OK

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Creating a Schedule Using Studio Manager for a T-SQL Script

• Select Notifications

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Creating a Schedule Using Studio Manager for a T-SQL Script

• Enable desired notifications for the system administrator.

• Click OK

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Creating a Schedule Using Studio Manager for a T-SQL Script

Creating a Schedule Using Windows Task Scheduler for a T-SQL Script

Creating a Schedule Using Windows Task Scheduler for a T-SQL Script

• Create a Batch File or VBScript to call a maintenance script through OSQL.

• Sample Batch File

@ECHO OFF

OSQL –S localhost –Usa –PCounterPoint8 –i c:\maintenance.sql –h –o c:\maintenance.log

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• Open Control Panel/Scheduled Tasks

• Select Add Scheduled Task

• Click Next

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Creating a Schedule Using Windows Task Scheduler for a T-SQL Script

• Select Browse

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Creating a Schedule Using Windows Task Scheduler for a T-SQL Script

• Select the Maintenance script

• Click Open

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Creating a Schedule Using Windows Task Scheduler for a T-SQL Script

• Select Weekly

• Click Next

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Creating a Schedule Using Windows Task Scheduler for a T-SQL Script

• Set Start Time to a time after the database backup completes and inside the CounterPoint Maintenance Window defined in Radiant Management Console.

• Select the day of the week to run Maintenance

• Click Next

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Creating a Schedule Using Windows Task Scheduler for a T-SQL Script

• Enter user name and password for the Scheduled Task

• Click Next

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Creating a Schedule Using Windows Task Scheduler for a T-SQL Script

• Click Finish

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Creating a Schedule Using Windows Task Scheduler for a T-SQL Script

Q and A