KoprowskiT_SQLRelay2014#4_Caerdydd_MaintenancePlansForBeginners

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ABOUT ME

• Leader of Polish SQL Server User Group

• Microsoft Certified Trainer (SharePoint, SQL Server, Security, Azure)

• SQL Server MVP (five years)

• MVP Mentor Program Member

• consultant, security & licensing auditor

• active blogger, influencer, technical writer

• last 9 years living in Data Processing Center

• last 14 years banking and ICT

• NOW going into Independent Consultancy

• frequently speaker at several conferences: SQL Server Community Launch, Time for

SharePoint, CodeCamps, InfoMEET, SharePoint Community Launch, CISSP Day, SQL in the

City, InfoTRAMS, SQL Bits, IT Camp, SQL Saturday, CareerCon, Sharepoint & SQL

Connection, Kariera IT, SQL Rally, SQL Relay, InfoTech…

• Microsoft Terminology Community / translations for Wndows 7/8 and Visual Studio

2010/2012

SQL Relay 2014 | Caerdydd Oct 16th | KoprowskiT - Maintenance Plans for Beginners 4

AGENDA

PHASE ONE – slide talks

• MP– what we are talking about?

• MP – how, where, when?

• MP - methods, tools, right (?) ways

• what Maintenance Plans can do you You

PHASE TWO – show time

PHASE THREE – discussion time


PHASE ONE – slide talks

Maintenance Plans – what we are talking about?

SQL Relay 2014 | Caerdydd Oct 16th | KoprowskiT - Maintenance Plans for Beginners

Maintenance Plans – what are you talking about?

• Clean Environment

• Silence

• Knowledge about environment

• Productivity / Performance

DEFINITION:A database maintenance plan is a set of specific, proactive taskthat need to be performed regularly on databasesto ensure their adequate performance and availability


Maintenance Plans – what are you talking about?

• To create or manage maintenance plans you must be a member of the sysadmin fixed server role.

• Note that Object Explorer only displays maintenance plans if the user is a member of the sysadmin fixed server role.

• The results generated by the maintenance tasks can be written as a report to a text file, or written to the maintenance plan tables, sysmaintplan_log and sysmaintplan_logdetail, in msdb.


Maintenance Plans – how, where, when?


Maintenance Plans – how, where, when?

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

• 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

• More flexible and advanced tool (not on this session)

• Graphical user interface with SSIS

• Most often used for „real DBA”

• Increased features

• Workflow for specified tasks with execution plan

• Multitasking

• Two additional Maintenance plans

• Execute T-SQL Statement

• Notify Operator


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

• 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/


Maintenance Plan: replacement

• The SQL Server Maintenance Solution comprises scripts for running backups, integrity checks, andindex and statistics maintenance on all editions of Microsoft SQL Server 2005, SQL Server 2008,SQL Server 2008 R2, SQL Server 2012, and SQL Server 2014.

• The solution is based on stored procedures, the sqlcmd utility, and SQL Server Agent jobs. Idesigned the solution for the most mission-critical environments, and it is used in manyorganizations around the world.

• Numerous SQL Server community experts recommend the SQL Server Maintenance Solution,which has been a Gold winner in the 2013, 2012, 2011, and 2010 SQL Server Magazine Awards.

The SQL Server Maintenance Solution is free.

“After you review this checklist run — do not walk — over to this website: http://ola.hallengren.com. Download, read, understand and implement these scripts. My friend Ola has done a better job on

these scripts than I’ve seen anywhere else, hands down.” - Buck Woody


https://ola.hallengren.com/organizations.html

http://sqlmag.com/sql-server/best-free-sql-server-tool-2013

http://sqlmag.com/sql-server/2012-sql-server-pro-editors-best-and-community-choice-awards

http://sqlmag.com/sql-server/2011-sql-server-magazine-editors-best-and-community-choice-awards

http://sqlmag.com/sql-server/2010-sql-server-magazine-editors-best-and-community-choice-awards

https://ola.hallengren.com/license.html

http://www.informit.com/guides/content.aspx?g=sqlserver&seqNum=32

(Everything I do) I do it for you


Maintenance plans: available tasks

• 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 scripts 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

• using DBCC CHECKDB

• 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 hasno 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 overallexecution time. NOINDEX does not affect system tables because integrity checks are always performed on system tableindexes

Y O

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http://msdn.microsoft.com/en-us/library/ms190768.aspx

POSSIBILITIES: SHRINK DATABASE

NEVER USE THIS OPTION IN MAINTENANCE PLANS

• Automated Database Shrinking:

• When the AUTO_SHRINK database option has been set to ON, the Database Engine automatically shrinks databases that have free space.

• This option is set using the ALTER DATABASE statement. By default, it is set to OFF.

• Manual Database Shrinking:

• If a DBCC SHRINKDATABASE or DBCC SHRINKFILE statement cannot reclaim all the specified space in a log file, the statement will issue an informational message that indicates what action you must perform to make more space eligible to be freed.

• When using the DBCC SHRINKDATABASE statement, you cannot shrink a whole database to be smaller than its original size.

• Therefore, if a database was created with a size of 10 MB and grew to 100 MB, the smallest the database could be reduced to is 10 MB, even if all the data in the database has been deleted.

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POSSIBILITIES: SHRINK DATABASE

Two very good posts about shrinking databases and other links:

• Shrinking a Database (TechNet):

• http://technet.microsoft.com/en-us/library/ms189080(v=SQL.105).aspx

• Pinal Dave: SQL SERVER – Shrinking Database is Bad – Increases Fragmentation – Reduces Performance

• http://blog.sqlauthority.com/2011/01/19/sql-server-shrinking-database-is-bad-increases-fragmentation-reduces-performance/

• Brent Ozar: Stop Shrinking Your Database Files. Seriously. Now.

• http://www.brentozar.com/archive/2009/08/stop-shrinking-your-database-files-seriously-now/

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http://technet.microsoft.com/en-us/library/ms189080(v=SQL.105).aspx

http://blog.sqlauthority.com/2011/01/19/sql-server-shrinking-database-is-bad-increases-fragmentation-reduces-performance/

http://www.brentozar.com/archive/2009/08/stop-shrinking-your-database-files-seriously-now/

POSSIBILITIES: Maintain Index & Column Statistics

Automation:

• 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

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POSSIBILITIES: Reorganize vs rebuild

Reorganize Index Task Rebuild Index Task

removing empty space and logical fragmentation

Performs a less thorough index defragmentation than Rebuild Index. If an index does not have any fragmentation, then is not reoganized, saving resources.

Virtually all wasted free space and logical fragmentation is removed. All indexes are rebuild from scratch, whether they need it or not.

performance impact does not require long blocking locks. An online task that allows users to access the database duringthetask

requires potentially long blocking locks that prevent users from accessing the indexes being rebuilt. A task that should be performed offline, though with the Enterprise Edition of SQL Server, you can use the online version of an index

speed generally takes longer to run that the Rebuild Index Task

Generally runs faster than Reorganize Index Task

space requirements Uses less disk space that the Rebuild Index Task. Uses less space i the transaction log than Rebuild Index Task

Use more disk space than Reorganize Index Task. More space is required in the transaction log than the Reorganize Index.

statistics maintenance

Index and column statistics must be updated separately. This adds to the administration hassle.

Index and column statistic are automatically updated as part of this step, using FULLSCANN option


POSSIBILITIES: history clean up (MSDB)

Choosing the data (right data) for deleting:

• Backup and restore history

• SQL Server Agent job history

• Maintenance Plan history

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PHASE two – showtime

Summary


PHASE THREE - discussion

SUMMARY

• We should remember about:

• Task sequences

• Task execution

• Task priority

• Documentation

• Using: daily / weekly / occasionally

• We get better expoloration of our environment

• We can monitoring / (partially) of performance and space

• Standard and above (sorry)

• Maintenance Plan Wizard

• for beginners and small installations

• Maintenance Plan Designer

• Adult , more complicated, wide environment



LINKS

• 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


CONTACT:

• MAIL: [email protected]

• MSG: [email protected]

• TWITTER/FACEBOOK/LINKEDIN: KoprowskiT

SLIDES FROM SESSION:

• SQL Relay 2014 Page: https://www.sqlrelay.co.uk/

• SlideShare Profile: http://www.slideshare.net/Anorak

BLOGS:

• ITPRO Anorak’sVision: http://itblogs.pl/notbeautifulanymore/ [PL/EN]

• Volume Licensing Specialites: http://koprowskit.eu/licensing/ [PL]

• My MVP Blog: http://koprowskit.eu/geek/ [EN/ES/PL]

AFTER SESSION


https://www.sqlrelay.co.uk/

http://www.slideshare.net/Anorak

http://itblogs.pl/notbeautifulanymore/

http://koprowskit.eu/licensing/

http://koprowskit.eu/geek/

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KoprowskiT_SQLRelay2014#4_Caerdydd_MaintenancePlansForBeginners