Minimal Downtime Strategies for Planned Maintenance

8/12/2019 Minimal Downtime Strategies for Planned Maintenance

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Does Upgrade = Downtime?Minimal Downtime Strategies for Planned Maintenance

Mike DietrichORACLE CorporationUpgrade Development Group

Takuya AbeORACLE JapanSales Consulting

Takashi IkedaFujitsu Hokuriku Systems Ltd. Japan


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2

Introduction

Who we are???


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3

Introduction

Mike Dietrich: http://blogs.oracle.com/UPGRADE


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4

Agenda

Downtime?

Different TechniquesThe Details

Practical comparison by Fujitsu Hokuriku

Different Techniques - Overview


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5

Why Downtime?

Why do we encounter downtimeduring a database

upgrade?

Database is in "UPGRADE" mode

The data dictionary will be upgraded

The database is protected against changes apart from upgrade

This usually means downtime It applies to:

Database release upgrades

Example: Upgrade from 10.2.0.3 to 11.2.0.2

Patch set upgrades

Example: Patch set upgrade from 11.2.0.1 to 11.2.0.2

Patches which modify the dictionary


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The Goal

Goal:

Reduce the downtime according to your requirements

and business needs

The 3 Magic Upgrade Questions:1)Are you changing operating systems?

2)Will you be moving to new hardware?

3)How much downtime can you experience?


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Agenda

Downtime?





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Change to a new OSand new HWOverview

exp/imp

COPY

CTASSQL*Loader

x Transportable TS

Transportable DB

Streams

Golden Gate

expdp/impdp

WorkssinceOracleVersion

slow Possible upgrade/migration downtime fast(strongly dependent on data volume)

Oracle8

Oracl e 9.2

Oracle 10.1

Oracle 10.2

Orac le 11.1

Oracle 8i

Oracle7

Oracle6

Oracle5


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Keep the OS Upgradeand change HWOverview

exp/imp

COPY

CTASSQL*Loader

TTS

Transportable DB

Streams

expdp/impdp


slow Possible upgrade/migration time fast

(may or may not depend on data volume)

Oracle8

Oracl e 9.2

Oracle 10.1

Oracle 10.2

Orac le 11.1

Oracle 8i

Oracle7

Oracle6

Oracle5

Logical Stby

Transient Stby

UpgradeCommand Line

Golden Gate


10/3010

Keep the HW just upgrade the databaseOverview

exp/imp

COPY

CTASSQL*Loader

TTS

Streams

expdp/impdp


slow Possible upgrade/migration time fast

(may or may not depend on data volume)

Oracle8

Oracl e 9.2

Oracle 10.1

Oracle 10.2

Orac le 11.1

Oracle 8i

Oracle7

Oracle6

Oracle5

UpgradeDBUA or Command Line

Golden Gate


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Agenda

Downtime?





12/3012 2010 Oracle Corporation 12

"Regular" Database Upgrade

Upgrade duration is mainly dependent on the number of

installed components Typical upgrade duration: 15-90 minutes

DBUA CommandLine

Same HW, same OS

Same HW, different OS

Different HW, same OS

Different HW, different OS



Export/Import and Data Pump

Upgrade duration is mainly dependent on data volume

exp/imp will work between Oracle5 and Oracle 11.2

expdp/impdp will work starting from Oracle 10.1

Faster and more powerful than "old" exp/imp

NETWORK_LINK parameter could be very beneficial

exp/imp expdp/impdp

Same HW, same OS






CTAS, COPY command and SQL*Loader

Upgrade duration is mainly dependent on data volume

Create-Table-As-Select and COPY work on database linkswith restrictions

SQL*Loader requires unload of data

Both techniques work since Oracle 7 or earlieracross versions

CTAS

COPY

SQL

Loader

Same HW, same OS






Transportable Tablespaces

TTS works since Oracle 8i

Cross platform and cross Endianness since Oracle 10g

Unplug data tablespaces and plug them into a new db

But objects in SYSTEM and SYSAUX have to be

transported as well

Complexity could be a constraint

TTS

Same HW, same OS




10g

10g


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16 2010 Oracle Corporation 16

Transportable Database

TDB works since Oracle 10.2

Cross platform, but NOT cross Endianness

RMAN automates the platform conversion

Database must be switched into READ ONLY mode

TTDB

Same HW, same OS

Same HW, different OS, same Endianness

Same HW, different OS, different Endianness


Different HW, different OS, same Endianness

Different HW, different OS, different Endianness


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Oracle Streams

Oracle Streams works since Oracle 9.2

Setup a copy of the database, upgrade it and replicateeverything to the copy

Cross platform and cross Endianness

Downstream Capture as fallback

But complex to setup and may have performance limitations

Streams

Same HW, same OS





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Oracle Golden Gate

Oracle Golden Gate works since Oracle 8i

Similar concept to Oracle Streams

Logmining happens outside the database

Faster and easier to setup and more datatypes supported

Golden

Gate

Same HW, same OS





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Logical Standby Database SQL Apply

SQL Apply Rolling Upgrade works since Oracle 10.1.0.3

Logical Standby database is upgraded first

Switchover exchanges roles between primary and standby

Then the former production is upgraded

Downtime reachable: less than 1 minute

SQL

Apply

Same HW, same OS





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Transient Logical Standby Database

Recommended beginning with Oracle 11g

Start with Physical Standby

Convert to Logical Standby, upgrade using SQL Apply

Use Flashback Database to return to Physical Standby

configuration

Downtime reachable: less than 1 minute

Transient

Standby

Same HW, same OS





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Section Divider


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Introduction

Takuya AbeSales Consulting

Oracle Japan


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Upgrade conditions in Japan

There are many databases running old versions in

Japan

Why?

Basically, they tend to improve their existing databases and not

upgrading them

Kaizen Each divisions in a company has their own systems with their

own policies

Its not easy to standardize or consolidate the systems

Afraid of the impact on applications by upgrading database

Its difficult to convince customers to upgrade databases


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Working with Upgrade Development

Upgrade Development team members came to Japan

last year to promote upgrading databases Provide an upgrade workshop

Several meetings with Japanese partner companies

Good and close relationship between U.S. and Japan

Keeping contact and discuss upgrade projects in Japan

Task Force Team for upgrading large-scale projects


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Collaboration with Partners in japan

Oracle Japan cooperates with many partner companies

Fujitsu, NEC, Hitachi, HP,etc

NS Solution, CTC, etc

From our partners perspective, there was not enough

information available about database upgrades

We had tested and created documents about databaseupgrades with Fujitsu at the Technology Verification

Center in Oracle Japans office


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Oracle GRID enterBest Pract ices, Innovat ive Ideas, from Japan


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Performs Key Technical Activities

at Oracle JapanUtilize Various Hardware

Servers, Storages and Network

Switches provided by Strategic

Partners

Collaborative Verification Testing

Engineers from Partners, Oracle

Japan and Oracle Development

Publish Outputs


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White Papers Oracle Database 11g Release 2 Improving OLTP System Performance Using Database Smart Flash Cache with Fujitsu SPARC Enterprise

http://www.fujitsu.com/downloads/STRSYS/system/fj-gc-dbsfc.pdf

Fujitsu SPARC Enterprise: Migrating from Oracle9i Database to Oracle Database 11g

http://www.oracle.com/technetwork/database/enterprise-edition/fj-gc-spe-migrate-1-132029.pdf

Oracle Database ILM Solution based on Fujitsu ETERNUS DX/SPARC Enterprise - Lower storage costs and power consumption for long-termdata storage -

http://www.fujitsu.com/downloads/STRSYS/system/fj-gc-eternus-ilm.pdf

Performance verification of Oracle RAC /Oracle BIEE on Fujitsu Blade Server - Validating Scalability by Adding Nodes -

http://www.oracle.com/technology/global/jp/tech/grid/doc/GRIDCenter-Fujitsu-BIEE_v1.0_English.pdf

Verification of Oracle Database 11g for Data Warehousing Using Fujitsu SPARC Enterprise - Performance Improvement Based on Data

Segment Compression and ASM Utilization -

http://www.fujitsu.com/downloads/SPARCE/whitepapers/fj-gc-spe-dwh-10-en.pdf

Effective resource utilization by In-Memory Parallel Execution in Oracle Real Application Clusters 11g Release 2

http://www.oracle.com/technetwork/middleware/bi-foundation/twp-in-mem-pq-gridcenter-ns-solutio-133291.pdf

Oracle Database 11g Release 2 Improving Batch Processing Speed using In-Memory Parallel Execution on Oracle Real Application Clusters

http://www.oracle.com/technetwork/database/features/bi-datawarehousing/twp-in-mem-pq-batch-gridcenter-ns-s-134459.pdf

Performance improvement of the entire Data Warehouse system on NEC Express5800/Scalable HA Server by using Oracle Database 11g

Release 2 In-Memory Parallel Query

http://www.oracle.com/technetwork/database/features/performance/twp-in-mem-pq-gridcenter-nec-eng-11-130343.pdf

Active Data Guard 11g, RMAN Network Duplicate, Snapshot Standby, Apply Performance and Fast-Start Failover w/ Hitachi Ltd.

http://www.hitachi.co.jp/products/it/storage-solutions/techsupport/whitepaper/pdf/11gdg_wp_v1_e.pdf

Best Practices for Oracle Automatic Storage Management (ASM) on Hitachi Dynamic Provisioning(HDP)

http://www.hitachi.co.jp/products/it/storage-solutions/techsupport/whitepaper/pdf/hdp_bestpractice_wp_e.pdf Data Guard Redo Transport Compression and Proper Network Configuration w/ Hitachi Ltd

http://www.hitachi.co.jp/Prod/comp/soft1/oracle/pdf/OBtecinfo-08-008.pdf

Data Guard SQL Apply on IBM Power Systems Performance Validation

http://www.oracle.co.jp/solutions/grid_center/ibm/pdf/GRIDCenter_SQLApply_PowerSystems_en.pdf
http://www.fujitsu.com/downloads/STRSYS/system/fj-gc-dbsfc.pdfhttp://www.oracle.com/technetwork/database/enterprise-edition/fj-gc-spe-migrate-1-132029.pdfhttp://www.fujitsu.com/downloads/STRSYS/system/fj-gc-eternus-ilm.pdfhttp://www.oracle.com/technology/global/jp/tech/grid/doc/GRIDCenter-Fujitsu-BIEE_v1.0_English.pdfhttp://www.fujitsu.com/downloads/SPARCE/whitepapers/fj-gc-spe-dwh-10-en.pdfhttp://www.oracle.com/technetwork/middleware/bi-foundation/twp-in-mem-pq-gridcenter-ns-solutio-133291.pdfhttp://www.oracle.com/technetwork/database/features/bi-datawarehousing/twp-in-mem-pq-batch-gridcenter-ns-s-134459.pdfhttp://www.oracle.com/technetwork/database/features/performance/twp-in-mem-pq-gridcenter-nec-eng-11-130343.pdfhttp://www.hitachi.co.jp/products/it/storage-solutions/techsupport/whitepaper/pdf/11gdg_wp_v1_e.pdfhttp://www.hitachi.co.jp/products/it/storage-solutions/techsupport/whitepaper/pdf/hdp_bestpractice_wp_e.pdfhttp://www.hitachi.co.jp/Prod/comp/soft1/oracle/pdf/OBtecinfo-08-008.pdfhttp://www.oracle.co.jp/solutions/grid_center/ibm/pdf/GRIDCenter_SQLApply_PowerSystems_en.pdfhttp://www.oracle.co.jp/solutions/grid_center/ibm/pdf/GRIDCenter_SQLApply_PowerSystems_en.pdfhttp://www.hitachi.co.jp/Prod/comp/soft1/oracle/pdf/OBtecinfo-08-008.pdfhttp://www.hitachi.co.jp/Prod/comp/soft1/oracle/pdf/OBtecinfo-08-008.pdfhttp://www.hitachi.co.jp/Prod/comp/soft1/oracle/pdf/OBtecinfo-08-008.pdfhttp://www.hitachi.co.jp/Prod/comp/soft1/oracle/pdf/OBtecinfo-08-008.pdfhttp://www.hitachi.co.jp/Prod/comp/soft1/oracle/pdf/OBtecinfo-08-008.pdfhttp://www.hitachi.co.jp/products/it/storage-solutions/techsupport/whitepaper/pdf/hdp_bestpractice_wp_e.pdfhttp://www.hitachi.co.jp/products/it/storage-solutions/techsupport/whitepaper/pdf/hdp_bestpractice_wp_e.pdfhttp://www.hitachi.co.jp/products/it/storage-solutions/techsupport/whitepaper/pdf/hdp_bestpractice_wp_e.pdfhttp://www.hitachi.co.jp/products/it/storage-solutions/techsupport/whitepaper/pdf/11gdg_wp_v1_e.pdfhttp://www.hitachi.co.jp/products/it/storage-solutions/techsupport/whitepaper/pdf/11gdg_wp_v1_e.pdfhttp://www.hitachi.co.jp/products/it/storage-solutions/techsupport/whitepaper/pdf/11gdg_wp_v1_e.pdfhttp://www.oracle.com/technetwork/database/features/performance/twp-in-mem-pq-gridcenter-nec-eng-11-130343.pdfhttp://www.oracle.com/technetwork/database/features/performance/twp-in-mem-pq-gridcenter-nec-eng-11-130343.pdfhttp://www.oracle.com/technetwork/database/features/performance/twp-in-mem-pq-gridcenter-nec-eng-11-130343.pdfhttp://www.oracle.com/technetwork/database/features/performance/twp-in-mem-pq-gridcenter-nec-eng-11-130343.pdfhttp://www.oracle.com/technetwork/database/features/performance/twp-in-mem-pq-gridcenter-nec-eng-11-130343.pdfhttp://www.oracle.com/technetwork/database/features/performance/twp-in-mem-pq-gridcenter-nec-eng-11-130343.pdfhttp://www.oracle.com/technetwork/database/features/performance/twp-in-mem-pq-gridcenter-nec-eng-11-130343.pdfhttp://www.oracle.com/technetwork/database/features/performance/twp-in-mem-pq-gridcenter-nec-eng-11-130343.pdfhttp://www.oracle.com/technetwork/database/features/performance/twp-in-mem-pq-gridcenter-nec-eng-11-130343.pdfhttp://www.oracle.com/technetwork/database/features/performance/twp-in-mem-pq-gridcenter-nec-eng-11-130343.pdfhttp://www.oracle.com/technetwork/database/features/performance/twp-in-mem-pq-gridcenter-nec-eng-11-130343.pdfhttp://www.oracle.com/technetwork/database/features/performance/twp-in-mem-pq-gridcenter-nec-eng-11-130343.pdfhttp://www.oracle.com/technetwork/database/features/performance/twp-in-mem-pq-gridcenter-nec-eng-11-130343.pdfhttp://www.oracle.com/technetwork/database/features/performance/twp-in-mem-pq-gridcenter-nec-eng-11-130343.pdfhttp://www.oracle.com/technetwork/database/features/performance/twp-in-mem-pq-gridcenter-nec-eng-11-130343.pdfhttp://www.oracle.com/technetwork/database/features/performance/twp-in-mem-pq-gridcenter-nec-eng-11-130343.pdfhttp://www.oracle.com/technetwork/database/features/performance/twp-in-mem-pq-gridcenter-nec-eng-11-130343.pdfhttp://www.oracle.com/technetwork/database/features/bi-datawarehousing/twp-in-mem-pq-batch-gridcenter-ns-s-134459.pdfhttp://www.oracle.com/technetwork/database/features/bi-datawarehousing/twp-in-mem-pq-batch-gridcenter-ns-s-134459.pdfhttp://www.oracle.com/technetwork/database/features/bi-datawarehousing/twp-in-mem-pq-batch-gridcenter-ns-s-134459.pdfhttp://www.oracle.com/technetwork/database/features/bi-datawarehousing/twp-in-mem-pq-batch-gridcenter-ns-s-134459.pdfhttp://www.oracle.com/technetwork/database/features/bi-datawarehousing/twp-in-mem-pq-batch-gridcenter-ns-s-134459.pdfhttp://www.oracle.com/technetwork/database/features/bi-datawarehousing/twp-in-mem-pq-batch-gridcenter-ns-s-134459.pdfhttp://www.oracle.com/technetwork/database/features/bi-datawarehousing/twp-in-mem-pq-batch-gridcenter-ns-s-134459.pdfhttp://www.oracle.com/technetwork/database/features/bi-datawarehousing/twp-in-mem-pq-batch-gridcenter-ns-s-134459.pdfhttp://www.oracle.com/tech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ate-1-132029.pdfhttp://www.oracle.com/technetwork/database/enterprise-edition/fj-gc-spe-migrate-1-132029.pdfhttp://www.oracle.com/technetwork/database/enterprise-edition/fj-gc-spe-migrate-1-132029.pdfhttp://www.oracle.com/technetwork/database/enterprise-edition/fj-gc-spe-migrate-1-132029.pdfhttp://www.oracle.com/technetwork/database/enterprise-edition/fj-gc-spe-migrate-1-132029.pdfhttp://www.oracle.com/technetwork/database/enterprise-edition/fj-gc-spe-migrate-1-132029.pdfhttp://www.oracle.com/technetwork/database/enterprise-edition/fj-gc-spe-migrate-1-132029.pdfhttp://www.oracle.com/technetwork/database/enterprise-edition/fj-gc-spe-migrate-1-132029.pdfhttp://www.oracle.com/technetwork/database/enterprise-edition/fj-gc-spe-migrate-1-132029.pdfhttp://www.oracle.com/technetwork/database/enterprise-edition/fj-gc-spe-migrate-1-132029.pdfhttp://www.oracle.com/technetwork/database/enterprise-edition/fj-gc-spe-migrate-1-132029.pdfhttp://www.oracle.com/technetwork/database/enterprise-edition/fj-gc-spe-migrate-1-132029.pdfhttp://www.fujitsu.com/downloads/STRSYS/system/fj-gc-dbsfc.pdfhttp://www.fujitsu.com/downloads/STRSYS/system/fj-gc-dbsfc.pdfhttp://www.fujitsu.com/downloads/STRSYS/system/fj-gc-dbsfc.pdfhttp://www.fujitsu.com/downloads/STRSYS/system/fj-gc-dbsfc.pdfhttp://www.fujitsu.com/downloads/STRSYS/system/fj-gc-dbsfc.pdf


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Minimal Downtime Strategies for Planned Maintenance