Hitchhiker's Guide. to upgrade to Oracle Database 12c. Mike Dietrich Senior Principal Technologist Database Upgrades Oracle Corporation

Transcription

1 Hitchhiker's Guide to upgrade to Oracle Database 12c Mike Dietrich Senior Principal Technologist Database Upgrades Oracle Corporation Updated: 3-APR-2014

2 Hitchhiker's Guide to Oracle Database Upgrades Introduction When? Why? How? News? The Real World Wrap Up 2

3 $> whoami 6 years RDBMS Core & MissionCirtical Support 6 years Technology Presales for DataGuard, Upgrades Mike Dietrich 3 6 years ST Upgrade Development Team 50% 50% Reference Projects + x% Workshops Worldwide Development Work

4 Reference Involvement 4

5 Reference Involvement: Results

6 Slides and Dates? Download slides from: blogs.oracle.com/upgrade 6

7 Further material? 90 Minute Webcast: Upgrade, Migrate & Consolidate to Oracle Database 12c OTN Page: 7

8 Hitchhiker's Guide to Oracle Database Upgrades Introduction When? Why? How? News? The Real World Wrap Up 8

9 When does Oracle Database 11.2 run out of Premier Support? 303 days < 10 months! 9

10 Supported Versions today Oracle 9.2 (GA: Jul 2002) Oracle 10.1 (GA: Jan 2004) JAN 2007 JAN 2009 JUL 2010 JAN 2012 Oracle 10.2 (GA: Jul 2005) JUL 2010 JUL 2013 Oracle 11.1 (GA: Aug 2007) Oracle 11.2 (GA: Sep 2009) Oracle 12.1 (GA: Jun 2013) AUG 2012 JAN 2015 AUG 2015 JAN 2018 JUN 2018 JUN 2021 Premier Support Extended Support Waived Extended Sustaining Support 10

11 Upgrade, Migrate and Consolidate to Oracle 12c Introduction When? Why? Or why not? How? News? The Real World Wrap Up 11

12 Why customers don't upgrade "You need to upgrade now as your release is going out of support soon!!!" "Upgrading just costs a lot!" "I don't see any benefits by upgrading to a newer release" "I'm happy with the features of Oracle 8i" "It will just introduce new bugs and issues" 12

13 Examination "Size of the database(s)?" "Number of databases?" "Downtime?" "Fallback?" "Exact source versions?" "Testing?" "New hardware?" "OS Migration?" 13

14 Are you maintaining a Zoo? 3 different OS families 7 different major Oracle releases 6 of 8 OS desupported 77 of 80 databases out of Support 14

15 Maintaining a Zoo is EXPENSIVE Maintenance Costs Upgrade/Migration Costs 15

16 Another example from the Real World OS change Application change Client change HW change No upgrade done for ~17 years!!! databases Minimal Downtime between Oracle 7.3 and Oracle

17 Upgrade, Migrate and Consolidate to Oracle 12c Introduction When? Why? How? News? The Real World Wrap Up 17

18 Upgrade/Migration Strategies? Step-by-Step Strategy In pieces over time Risk mitigating Big-Bang Strategy All in one downtime window Sometimes necessary due to dependencies Least Critical First Learn more with every step Most Critical First Learn about almost all from the beginning 18

19 Project Approach? Plan your upgrades as early as possible Application testing is important Have valid test systems Think about the fallback... before you start! Try to streamline Talk to us (Oracle) to avoid pitfalls Get our Best Practice slides 19

20 Project Phases Data Gathering Phase The more you know the better it is! Test Phase Upgrade/Migration Phase Go-Live Phase Future Phase Application: Owner? Version? Dependencies? Certification? Timeframe? Test budget? Database: Owner? Exact version and patches? Size? Downtime? Dependecies? Gateways? Operating system version? 20

21 Project Phases Data Gathering Phase Test Phase Test, test, test... and test!!! Upgrade/Migration Phase Go-Live Phase Future Phase 1:1 test systems? Documentation? Network bandwidth? Performance data from PROD? Testing tools: RAT? Batches, long-ops? Multiple successful test runs? Performance protection? Be open to late patches/psus! Fallback strategy tested? 21

22 Network Bandwidth Interface Netto Data Volumne Theoretical Transfer Throughput Real World Transfer Throughput 100 Mbit Ethernet 11 MB/sec 40 GB/hour <30 GB/hour 1 Gbit Ethernet 110 MB/sec 400 GB/hour <300 GB/hour 10 Gbit Ethernet 1100 MB/sec 4000 GB/hour <3000 GB/hour Infiniband IB 4xQDR 4000 MB/sec GB/hour <11000 GB/hour 22

23 General Test Guidelines Upgrade/Migration Process Post-Upgrade Functionality Prod Load Post-Upgrade Performance 23

24 Database Replay IBM AIX SOLARIS R2 Migrate Compare then restore and run again with changes Capture Workload Preprocess Workload Replay Workload Database Replay 24

25 SQL Performance Analyzer IBM AIX SOLARIS Migrate STS R2 Evaluate, compare and tune over and over again! Capture SQLs into a STS Load STS STS SQL Performance Analyzer 25

26 Testing Effort Relation between test completeness and costs Completen ness 100% 0% low Costs high 27

27 Project Phases 1 2 Data Gathering Phase Test Phase Upgrade/Migration Phase Is everbody informed? 3 Relax... 4 Go-Live Phase Relax and lean back! Don't overtestosteronize!! 5 Future Phase 28

28 Upgrade/Migrate Older Oracle Releases Oracle 5/6/7/8 Oracle 8i exp/imp Less Downtime? Near-Zero Downtime? Oracle 9i Oracle 9.2 Transportable Tablespaces Same platform only Golden + Gate Oracle

29 Upgrade Options to Oracle Database 12c Oracle 10.2 expdp/impdp Less Downtime? Near-Zero Downtime? Oracle 11.1 DBUA HW catctl.pl Transient Standby Logical Standby + Golden Gate Oracle /2 Oracle /4 Transportable Tablespaces Full Transportable Export/Import RMAN + Inc Bck 30

30 Migration Options to Oracle Database 12c Oracle 10.2 expdp/impdp Less Downtime? Near-Zero Downtime? Oracle 11.1 CTAS, COPY Oracle /2 SQL*Loader TDB Only same Endianness Transportable Tablespaces Golden + Gate Oracle /4 Full Transportable Export/Import RMAN + Inc Bck 31

31 Project Phases Data Gathering Phase Test Phase Upgrade/Migration Phase Go-Live Phase Keep an extra eye on performance Future Phase Monitor performance behaviour Any issues? Use collected data from preupgrade to fix issuse Open an SR with Support 32

32 SPM Plan Stability using Plan Capture STS STS Upgrade Plan History Plan Baseline GB HJ ❶ ❷ Plans will be taken from STS and added to the SQL Plan Baseline DBMS_SPM.LOAD_PLANS_FROM_SQLSET HJ 33

33 Project Phases Data Gathering Phase Test Phase Upgrade/Migration Phase Don't lean back it just started! Go-Live Phase Future Phase It's not over now... It just started!!! Patching strategy? Next available PSU? Next available patch set? When will be the next upgrade? Adopt useful new features Many features come for free 34

34 Waiting for next Patch Set? Release Schedule of Current Database Releases Note x 3x 1x

35 Recommended Patches: PSUs Always install the latest PSU as soon as possible Most important Notes: Note: : Introduction to Database PSU Note: : PSU Known Issues PSU contents: CPUs Fixes for Critical Issues Fixes Recertification Fixes Configuration PSU characteristics: RAC Rolling Standby First PSU schedule 4x: 14-JAN-2014 / 15-APR-2014 / 15-JUL-2014 / 14-OCT

36 Hitchhiker's Guide to Oracle Database Upgrades Introduction When? Why? How? News? The Real World Wrap Up 37

37 Upgrade to Oracle Database 12c Oracle Oracle Oracle Oracle Oracle Oracle Oracle Oracle Oracle Oracle Oracle 7.3 (GA: 1996) Oracle 8.0 (GA: Oracle 8.1 (GA: 1998) Oracle 9.0 (GA: 2001) Oracle 9.2 (GA: Jul 2002) Oracle 10.1 (GA: Jan 2004) Oracle 10.2 (GA: Jul 2005) DIRECT Oracle 11.1 (GA: Aug 2007) DIRECT Oracle 11.2 (GA: Sep 2009) DIRECT Oracle 12.1 (GA: Jun 2013) Please note: This graph will apply to database upgrades only! 38

38 Upgrade SQL Automation New Pre-Upgrade Script preupgrd.sql Executes pre-upgrade checks Runs in source environment Generates fixup scripts preupgrade_fixups.sql postupgrade_fixups.sql MOS Note:

39 Faster Upgrade Less Downtime New Parallel Upgrade catctl.pl catctl.pl Runs database upgrade in parallel script1.sql script2.sql script3.sql Up to 40% faster upgrade script4.sql script7.sql script9.sql Used and proven by selected Oracle Database 11g customers script5.sql script8.sql script10.sql script6.sql script11.sql script6.sql 40

40 Faster Upgrade Less Downtime New Parallel Upgrade $> $ORACLE_HOME/perl/bin/perl catctl.pl -n 8 catupgrd.sql 41

41 The new parallel upgrade script promises to drastically reduce downtime due to planned maintenance. We saw a 37% improvement over the previous upgrade process in our environment. Harald Stefan Leiter Datenbanken Payback GmbH 42

42 Simplified Upgrade Database Upgrade Assistant Pre-Upgrade Automation Parallel Upgrade RMAN Integration Guaranteed Restore Points Activity and Alert Log 43

43 Enterprise Manager Mass and RAC Upgrades EM Cloud Control Mass Upgrades Grid Infrastructure Upgrades RAC Database Upgrades Standby Database Upgrades 44

44 Upgrade and Plug Into Oracle Multitenant Upgrade into Multitenant PDB$ SEED PDB1 Database upgrade Create XML description file Shutdown and Plugin Sanity operations CDB PDB1 xml DB1 Read Only 45

45 Migrate with Full Transportable Export Migrate with FTE Combining: Transportable Tablespaces with Data Pump taking care of all meta information with optional RMAN incremental backups to decrease downtime This works: Cross platform With or without Oracle Multitenant Source can be Oracle /4 Target must be at least Oracle PDB$ SEED PDB1 CDB Database Link impdp DB1 Read Only 46

46 Hitchhiker's Guide to Oracle Database Upgrades Introduction When? Why? How? News? The Real World Wrap Up 47

47 Real World Customer Production Environment DB1 PDB$ SEED PDB1 PDB2 PDB$ SEED PDB1 PDB2 PDB3... PDB17 CDB SWITCHOVER CDB 12c Beta Stand Alone 12c RC6 CDB with 2 PDBs 12c Production CDB with 17 PDBs and Physical Standby plus EM 48

48 Real World Customer Experience "A bit more work regarding monitoring but a lot of improvements" "It is very stable" " If we talk about whether a DBA life is much easier I think its a mixed bag" "If seen as 15 different databases I don't think I would have configured them on this cluster. But as deployment of 15 PDBs within one container it has been made possible" "Issues may get to you now at once" " I am definitely impressed with the quality and stability side" 49

49 Hitchhiker's Guide to Oracle Database Upgrades Introduction When? Why? How? News? The Real World Wrap Up 50

50 Resources Download slides as PDF from: Full Day Upgrade Workshop in Oslo: Registration: &source=EMEAFM MPP059 May 20,

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