SQL Server Backup, Integrity Check, Index and Statistics Maintenance

SQL Server Backup, Integrity Check, Index and Statistics Maintenance:

from the page:

Getting Started

Download MaintenanceSolution.sql. This script creates all the objects and jobs that you need.

Learn more about using the SQL Server Maintenance Solution:

• DatabaseBackup: SQL Server Backup
• DatabaseIntegrityCheck: SQL Server Integrity Check
• IndexOptimize: SQL Server Index and Statistics Maintenance

Intelligent Index Maintenance

The SQL Server Maintenance Solution lets you intelligently rebuild or reorganize only the indexes that are fragmented. In theIndexOptimize procedure, you can define a preferred index maintenance operation for each fragmentation group. Take a look at this code:

EXECUTE dbo.IndexOptimize @Databases = 'USER_DATABASES',
@FragmentationLow = NULL,
@FragmentationMedium = 'INDEX_REORGANIZE,INDEX_REBUILD_ONLINE,INDEX_REBUILD_OFFLINE',
@FragmentationHigh = 'INDEX_REBUILD_ONLINE,INDEX_REBUILD_OFFLINE',
@FragmentationLevel1 = 5,
@FragmentationLevel2 = 30

In this example, indexes that have a high fragmentation level will be rebuilt, online if possible. Indexes that have a medium fragmentation level will be reorganized. Indexes that have a low fragmentation level will remain untouched.

Update Statistics

The IndexOptimize procedure can also be used to update statistics. You can choose to update all statistics, statistics on indexes only, or statistics on columns only. If an index is rebuilt, the statistics is not being updated. You can also choose to update the statistics only if any rows have been modified since the most recent statistics update.
EXECUTE dbo.IndexOptimize @Databases = 'USER_DATABASES',
@FragmentationLow = NULL,
@FragmentationMedium = 'INDEX_REORGANIZE,INDEX_REBUILD_ONLINE,INDEX_REBUILD_OFFLINE',
@FragmentationHigh = 'INDEX_REBUILD_ONLINE,INDEX_REBUILD_OFFLINE',
@FragmentationLevel1 = 5,
@FragmentationLevel2 = 30,
@UpdateStatistics = 'ALL',
@OnlyModifiedStatistics = 'Y'