Beginner's Guide to Maintenance Plans

Maintenance Plans
for beginners

@KoprowskiT

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Doroczna konferencja Polskiej Grupy Użytkowników SQL Server – kilka faktów
 28 kwietnia – całodzienne warsztaty
 29-30 kwietnia – trzy ścieżki po pięć sesji każda
 Stadion Miejski we Wrocławiu

 Najlepsi prelegenci z Polski i Europy
 Impreza integracyjna
 Olbrzymia dawka wiedzy

http://conference.plssug.org.pl/
Kariera IT Kraków | 22 Feb 2014 | KoprowskiT - Maintenance Plans for Beginners

Select {BIO}
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

polish sql server user group leader



microsoft certified trainer



pass sql azure virtual chapter co-founder



blogger, influencer, technical writer



over 8 years living in data center in wrocław



bout 14 years in it/banking area



trainer, auditor, consultant



speaker at many international conferences: sql server community launch, time for sharepoint,
codecamps, sharepoint community launch, cissp day, sql in the city, infotrams, sql bits, sql
saturday, careercon, sharepoint & sql connection, it camp,



deep dives co-author: high availability of sql server in the context of service level agreements


ENGLISH

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maksymalny stopień równoległości prostych opcji
max degree of parallelism

Zwalniane spację w plikach bazy danych
Retain freed space in database files

Baza danych jest zagęszczonym mleku do stron ciągłych, ale strony nie są cofniętych
przydziałów, a pliki bazy danych nie zmniejszać. Użyj tej opcji, jeśli oczekujesz, że baza
danych, aby rozwinąć ponownie i nie chcesz zmienić alokację przestrzeni. Po wybraniu tej
opcji pliki bazy danych nie zmniejszać możliwie. Korzysta z opcji NOTRUNCATE.
The database is condensed to contiguous pages but the pages are not deallocated, and the
database files do not shrink. Use this option if you expect the database to expand again, and
you do not want to reallocate space. With this option, the database files do not shrink as
much as possible. This uses the NOTRUNCATE option.


AGENDA

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Maintenance Plans – what are you talking about?
Maintenance Plans – how, where, when?
 Methods, tools, right (?) ways

What Maintenance Plans can do you You
Short Demo
Q&A


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Maintenance Plans – what we are talking about?


Maintenance Plans – what are you talking about?

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 Clean Environment
 Silence

 Knowledge about environment

 Productivity / Performance
DEFINITION:
A database maintenance plan is a set of specific, proactive task
that need to be performed regularly on databases
to ensure their adequate performance and availability


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HOW:
 Maintenance Plan Wizard
 Maintenance Plan Designer

 T-SQL Scripts
 PowerShell Scripts
WHERE
 SQL Server Management Studio from Standard and above
 See you in… Express

WHEN:
 BEFORE: problems / service windows
 AFTER: maintaining / clients back to home

HOW: Maintenance Plan Wizard

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 Very simple (although advanced) wizard

 Providing possibility for creation simple task in dozens of seconds
 Enough in many cases, environments
 Limited but include many options
 Limitations:

 number of databases
 granularity
 single tasks / no multitasking
 no scripting for another instances
 some known problems in previous version of SQL Server

 SQL Server 2005 Service Pack 2 / SQL Server 2008


HOW: Maintenance Plan Designer

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 More flexible and advanced tool (not on this session)
 Graphical user interface with SSIS
 Most often used for „really DBA”

 Increased features
 Workflow for specified tasks with execution plan
 Multitasking
 Two additional Maintenance plans
 Execute T-SQL Statement

 Notify Operator


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LIMITATIONS: Maintenance Plan wizard & Designer
Limitations for both tools / those ideas are not possible
 Identification and removing fragmentation for physical files

 Identification abandoned, duplicated, forgotten indexes
 Providing backup on demand
 Werification good quality of backup
 Werification succesful restore
 Monitoring of performance

 Monitoring of SQL OS
 Monitoring of Windows OS
 Monitoring available space


Maintenance Plan: t-sql & powershell scripts

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 Functionality for „Real *Tru* DBA”
 Necessary for working with multiple databases, instances, server farms
 Feauters for scripting:

 Access to OS
 Posibility of moving
 Scripts sharing
One of the best examples and tools for free:
HTTP://OLA.HALLENGREN.COM/


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(Everything I do) I do it for you


Maintenance plans: available tasks

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 Check Database Integrity | DBCC CHECKDB
 Shrink Database | NEVER, NEVER, NEVER
 Reorganize Index | ALTER INDEX , and next Update Statistics
 Rebuild Index | ALTER INDEX, Update Statistics are not necessary
 Update Statistics | Sp_updatestats

 History Cleanup | Using msdb, don’t do that too much frequently
 Execute SQL Server Agent Job | Providing scrip using wen You work with agent
 Back Up Database (Full) | Executing BACKUP DATABASE with FULL option >>Transaction Log
 Back Up Database (Differential) | Executing BACKUP DATABASE with DIFFERENTIAL option
 Back Up Database (Transaction Log) | Executing BACKUP LOG, frequency...
 Maintenance Cleanup Task | Most complicated feature ? BAK, TRN, TXT


Functionality: Verify Integrity of Database

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 Daily
 Weekly

 Monthly
 DBCC CHECKDB (’database_name’) WITH NO_INFOMSGS
 Suppresses all informational messages.

 DBCC CHECKDB (’database_name’) WITH NO_INFOMSGS, ALL_ERRORMSGS
 Displays all reported errors per object. All error messages are displayed by default. Specifying or omitting
this option has no effect. Error messages are sorted by object ID, except for those messages generated
from tempdb database.
 In SQL Server Management Studio, the maximum number of error messages returned is 1000.

 DBCC CHECKDB (’database_name’) NOINDEX
 Specifies that intensive checks of nonclustered indexes for user tables should not be performed. This
decreases the overall execution time. NOINDEX does not affect system tables because integrity checks are
always performed on system table indexes

YOU SHOULD REMEMBER

 using DBCC CHECKDB

POSSIBILITIES: SHRINK DATABASE

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 MDF & LDF

 100 GB reserved
 15 GB in use
 DBCC SHRINKDATABASE
or
 DBCC SHRINKFILE | MANUAL MODE

Reduction of Reserved Space


YOU MUST REMEMBER

NEVER USE THIS OPTION IN MAINTENANCE PLANS

POSSIBILITIES: Maintain Index & Column Statistics

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

AUTO_CREATE_STATISTICS



AUTO_UPDATE_STATISTICS



Executing automatically after: INSERT, UPDATE, DELETE



UPDATE STATISTICS table_name WITH FULLSCAN

When:


Never…



Just after Index Reorganization



On the days when we’re not using Index Rebuild or Reorganize Index

Important options (UPDATE STATISTICS):


All existing statistics



Column statistics only



Index statistics only

YOU SHOULD REMEMBER

Automation:

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POSSIBILITIES: Reorganize vs rebuild


POSSIBILITIES: history clean up (MSDB)

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 Backup and restore history
 SQL Server Agent job history

 Maintenance Plan history


YOU MUST REMEMBER

Choosing the data (right data) for deleting:

Summary

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SUMMARY

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 We should remember about:


Task sequences



Task execution



Task priority



Documentation



Using: daily / weekly / occasionally

 Better expoloration of our environment
 Monitoring (partially) of performance
 Standard and above (sorry)
 Maintenance Plan Wizard

 for beginners and small installations
 Maintenance Plan Designer
 Adult  , more complicated, wide environment


LINKS
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 Brad McGehee | Brad’ Sure Guide to SQL Server Maintenance Plans
„My new eBook, Brad’ Sure Guide to SQL Server Maintenance Plans is now available as
a free, 269 page PDF eBook. The book is designed for part-time or novice DBAs who
want to learn how to properly create Maintenance Plans using the tools that come with

SQL Server Management Studio (SSMS) in SQL Server 2005/2008.
LINK: http://bit.ly/1ijdnah

 Ola Hallengreen | Maintenance Plans Scripts PASS slidedeck
„The SQL Server Maintenance Solution comprises scripts for running backups,
integrity checks, and index and statistics maintenance on all editions of Microsoft
SQL Server 2005, SQL Server 2008, SQL Server 2008 R2, SQL Server 2012. The

solution is based on stored procedures, sqlcmd utility, and SQL Server Agent jobs”
LINK: http://bit.ly/1b220Ns


after hours…
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My MVP Blog: http://koprowskit.eu/geek/ [PL/EN/ES]


Beginner's Guide to Maintenance Plans

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