Une migration de base de données n'est pas toujours une tâche simple à réaliser. Découvrez quels sont les pièges à éviter, les problématiques que l'on peut rencontrer mais également les bonnes pratiques issues de notre expérience SQL Server 2012. Vous apprendrez tout ce qu'il faut savoir pour réussir une migration en toute sérénité.

1. dbi services
Migration to SQL Server 2012
Antonio De Santo
Consultant
Stéphane Haby
Consultant
1 www.dbi-services.com 26.04.2012 © dbi services

2. dbi services
Migration to SQL Server 2012
Agenda
i. Introduction
ii. Why ?
iii. How ?
iv. After…
v. Conclusion
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3. Introduction
what is your migration?
 You have SQL Server
 You have another RDBMS
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4. Introduction
SQL Server generation
7.0 2000 2005 2008/R2 2012
 Migration between distant generations are more difficult
 Only 2 generations away for a migration:
 Migration from 2000 to 2012 requires an intermediate step
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5. dbi services
Migration to SQL Server 2012
Agenda
i. Introduction
ii. Why?
iii. How?
iv. After…
v. Conclusion
5 www.dbi-services.com 26.04.2012 © dbi services

6. Why?
From SQL 2000 to 2005
 Solid offering for departmental and mid-market IT and enhanced
enterprise data platform:
 SQL Server Management Studio
 High Availability: Database mirroring, piecemeal restore, indexation online
 Partitioning (tables and indexes)
 XQuery and CLR
 Snapshot isolation
 Service broker
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7. Why?
From SQL 2005 to 2008
 Comprehensive data platform solution for the enterprise:
 Resource governor
 Transparent data encryption
 Auditing
 Data and backup compression
 Policy-based management
 New data types (spatial, dates, and time)
 Filestream
 New cube designer
 Write-back to MOLAP
 SSAS performance and scale
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8. Why?
From SQL 2008 to 2008R2
 Comprehensive, integrated data management and business
intelligence (BI):
 PowerPivot for Microsoft SharePoint
 Report Builder 3.0
 Support for up to 256 logical processors
 Master data services
 Multi-server management
 Data-tier application component (DAC)
 Complex event processing
 System preparation
 Unicode compression
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9. Why?
From SQL 2008R2 to 2012
 Facility to manage High availability, performance features:
 AlwaysOn
 Windows Server Core support
 ColumnStore Index
 Visual Studio 2010 & SQL Data Tools
 FileTable
 Contained Databases
 Sequences, new functions…
 PowerView
 MDS, DQS
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10. Why?
SQL Server & OS
 SQL Server 2000:
 Not available of Windows 2008 & 2008 R2
 SQL Server 2005:
 Windows 2000 SP4, 2003 SP1 & 2008(SP2 for SQL Server)
 SQL Server 2008:
 Windows 2003/R2 SP2, 2008 & 2008 R2(SP1 for SQL Server)
 SQL Server 2008 R2:
 Windows 2003/R2 SP2, 2008 SP2 & 2008 R2
 SQL Server 2012:
 Windows 2008 SP2 & 2008 R2 SP1
 Windows 2008 R2 SP1 server Core
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11. Why?
Microsoft support
SQL Version Mainstream Support Extended Support
SQL Server 2000 SP4 08.04.2008 09.04.2013
SQL Server 2005 SP4 12.04.2011 12.04.2016
SQL Server 2008 14.01.2014 08.01.2019
SQL Server 2008 R2 14.01.2014 08.01.2019
Windows Version Mainstream Support Extended Support
Windows Server 2000 30.06.2005 13.07.2010
Windows Server 2003 13.07.2010 17.07.2015
Windows Server 2008 09.07.2013 10.07.2018
Windows Server 2008 R2 09.07.2013 10.07.2018
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12. dbi services
Migration to SQL Server 2012
Agenda
i. Introduction
ii. Why?
iii. How?
iv. After…
v. Conclusion
12 www.dbi-services.com 26.04.2012 © dbi services

13. How?
Microsoft Assessment and Planning
 MAP version 6.5
 Functions
 Discovery and inventory
 Database Consolidation Appliance
 SQL Server Licencing
 Detail reporting
 Link:
http://technet.microsoft.com/en-us/solutionaccelerators/dd537572.aspx
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14. How?
SQL Server update
Platform
change?
Db
granular
control?
Fallback
?
parallel
versions
?
Parallel update Direct update
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15. How?
Direct update
 SQL Server 2008 R2: Since 2000 SP4, 2005 SP2 & 2008
 SQL Server 2012: Since 2005 SP2, 2008 & 2008 R2
 Simple  little control
 Fast  non-granular
 Same server for  Downtime
applications  No fallback (need a
 Update System Data's reinstall)
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16. How?
Direct update
Prerequisites Binaries
BEGIN Check
installation installation
redirects
Stop services to Single user Attach Stop
Services the new Start resource db Services
version
Restart Update all Update Delete old
END
services databases Scripts binaries
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17. How?
Parallel update
 New instance or Server
 Backup/restore or attach/detach
 Change platform  Complex
 Can be tested  Volumes copy
 Db granularity  Change instance or/and
 Fallback server name
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18. How?
Preparation checklist
 Schedule
 Known your applications
 Document and analyze the source platform
 Test and compare the application’s behavior
 Document the scenario and the migration procedure
 Script and automate the migration
 Test the scenario
 and test turning back
 Check your backups
"I love it when a plan comes together"
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19. How?
Preparation
 Security: users/logins mapping
 ALTER USER user WITH LOGIN = login
 Clonage : http://support.microsoft.com/kb/918992
 Transfer SQL Agent jobs
 Script or SSIS job
 Maintenance plan
 DTS / SSIS
 Verify / Revise / Recopy
 Migrate DTS to SSIS package
 Others
 Stored procedure in master
 SQL Mail
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20. How?
SQL Server Upgrate Advisor
 Analysis of several components, including DTS
 Analysis of traces or SQL queries files
 Displays a detailed report
 Provides actions to take before and
after the update
 ... But does not replace the test
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21. How?
Documentation
 Uses Tools
 SQLDiag.exe
 Sp_configure, sp_dboption
 storage, network, security configuration
 SQL Agent Job
 DTS / SSIS
 Performance's monitoring
 Perfmon
 SQL Profiler
 Application’s response time
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22. dbi services
Migration to SQL Server 2012
Agenda
i. Introduction
ii. Why?
iii. How?
iv. After…
v. Conclusion
22 www.dbi-services.com 26.04.2012 © dbi services

23. After...
Tests before migration
 Is essential
 Migration changes the performance of my queries and stored
Procedures in good…and sometimes in bad!
 An update change your RDBMS Engine
 The optimizer behavior is different
 Query plans are different
 Procedure’s cache management is different
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24. After...
Analysis Tools
 SQL Profiler
 Capture activity
 Replay and recapture
 RML Utilities (Traces from 2000 to 2008R2 not 2012)
 ReadTrace
 Replay & Reports
 Distributed Replay (Traces from 2005 to 2012)
 The optimizer behavior is different
 Query plans are different
 Procedure’s cache management is different
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25. After...
Improve performances
 Update statistics (FULL SCAN if possible)
 Review or delete query hints
 Rewrite queries
 Measure tempdb usage
 Check query plans, using the DTA
 Use the new features
 Partionning
 Columns Store index, filtered indexes
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26. After...
Checklist
 Review all log (eventlogs, errorlogs)
 Check the integrity
 DBCC CHECKDB ( For SQL 2000: DBCC UPDATEUSAGE)
 Check the scheduled tasks and maintenance plans
 Check the security
 Update statistics
 Reconfigure and use the new features
 Perform validation tests, including fallback
 After validation: decommission / uninstall the old servers
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27. dbi services
Migration to SQL Server 2012
Agenda
i. Introduction
ii. Why?
iii. How?
iv. After…
v. Conclusion
27 www.dbi-services.com 26.04.2012 © dbi services

28. Conclusion
SQL Server Migration Assistant
 Free download
 For Sybase, Oracle, MySQL or Access
 Migrate to 2005, 2008/R2, 2012 or Azure
 Provide an estimate report
 Automates main operations
 Data types mapping
 Objects Migration
 Data Migration
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29. Conclusion
SSIS Packages for Data Migration Generator
 Develop by Pascal Belaud, Microsoft France
 Automatic generation of SSIS Packages for data’s transfer from all
OLE DB connector to SQL Server
 Free on codeplex: http://SSISGenerator.codeplex.com
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30. Conclusion
SQL Server Analysis Services
 Structural changes
 No virtual cubes
 No virtual dimensions
 Direct upgrade supported
 Parallel upgrade with MigrationWizard.exe
 Install backward compatibility
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31. Conclusion
SQL Server Reporting Services
 Since Reporting Services 2008
 Not on IIS
 uses native http.sys
 Direct upgrade supported
 Manually Upgrading to a SQL database using SSRS 2000 in
remote
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32. dbi services
Any Questions? Please Do Ask!
Antonio De Santo
Consultant
Stéphane Haby
Consultant
„We look forward to working with you!“
32 www.dbi-services.com 26.04.2012 © dbi services