[db tech showcase Tokyo 2016] E34: Oracle SE - RAC, HA and Standby are Still Available. Even Cloud!...

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Oracle SE – RAC, HA and Standby are Still Available. Even Cloud!


Introduction

Chris Lawless @ChrisDbvisit

•  Technical presenter at OOW, IOUG, UKOUG & NZ user groups •  Senior Principle PM @ GoldenGate before and after Oracle acquisition •  Senior Instructor for Oracle at Oracle University for Oracle database •  +15 years in Oracle world •  Co-author of ‘Oracle Data Integration: Tools for Harnessing Data’

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About Dbvisit The Facts •  Based in New Zealand with sales offices in US and Europe •  Used in 110+ Countries •  Already trusted by 1,000+ Companies •  Product Engineers with DBA Experience Our Focus: •  Dedicated software development company •  Oracle database replication is our playground •  Worldwide leader in DR solutions for Oracle Standard Edition


Agenda

•  Oracle Database Editions •  Basic Concepts •  What about HA and DR? •  Cloud •  Licensing the easy way •  Restrictions


Oracle Enterprise Edition is in a league of its own!

Oracle Enterprise Edition or Standard Edition?

BUT, do not forget about its little brother Standard Edition, it punches above its weight!


There are many editions… Which one should I use?


Database Editions - Classification

Many “classify” them as follows:

Personal Edition : Single User

Express Edition (XE)

: Free Entry Level

Standard Edition One (SE1)

: Small

Standard Edition (SE / SE2)

: Small to Medium

Enterprise Edition (EE) : Large Enterprise


Some Differences Database Features 1 SE1 SE/SE2 EE Maximum CPU’s 2 CPU Sockets 4 CPU Sockets (SE)

2 CPU Sockets (SE2) No Limit

Oracle Real Applica@on Clusters (RAC) ✗ ✔

Free with SE/SE2 ✔

(Extra License Cost Op<on)

Oracle Data Guard ✗(3rd party op<ons available)

✗(3rd party op<ons available)

✔

Flashback (Table, Database, Transac@on) ✗ ✗ ✔

Parallel Op@ons (Parallel Query, Stats Gathering, Index Building and Parallel Data Pump)

✗ ✗ ✔

Automa@c Workload Repository ✗(Statspack, Confio Ignite etc.

is available)

✗(Statspack, Confio Ignite etc.

is available)

✔(Extra License Cost

Op<on)1 The table provides a summary of database features, a full detail lis@ng can be found in the Oracle online documenta@on. Note that parallel and flashback include a number of op@ons not listed above.


Differences Between Database Editions

Oracle Documentation Oracle Support Notes

–  269040.1 (9i) –  465465.1 (10g) –  465460.1 (11g) –  1628809.1 (12c)


Agenda



Before we can begin talking about HA and DR we need to talk about Business Continuity.

That means RPO and RTO.


Before thinking about RTO and RPO… you need to think of the business impact. Asking the business about downtime and the loss of your ‘precious’ business data.

Business Continuity


Point in time in the past to which you will recover. Think of this as … how much data can you reasonably lose?

Recovery Point Objective (RPO)


Recovery Time of Objective (RTO)

The point in time in the future when you will be running again. Think of this as amount of downtime.


RPO RTO

DISASTER!

Potential data loss Downtime


High Availability ‘CIO’s dream and a DBA’s nightmare’ •  Clustered system that enables continuous system service when one part of the system fails. •  Having in place a duplicate set of business processes, and a method with which to implement them, in the event of catastrophic failure.

Disaster Recovery


High Availability vs. Disaster Recovery

Local Geographically diverse No downtime Little downtime No data loss Expected amount of data loss (RPO)

Cluster Independent secondary database

No replication required Replication inherent Utilising all hardware Idle hardware


Agenda



What about HA and DR?

What options are you thinking about?

•  Oracle Real Application Clusters (RAC)


Why Install Oracle Real Application Clusters (RAC)

•  Performance •  Increased throughput •  High availability


Oracle Real Application Clusters (RAC)


Oracle Real Application Clusters (RAC)

SE and Oracle RAC –  Included from 10g –  Socket Limitations:

•  4 Sockets in Cluster (SE) •  2 Sockets in Cluster (SE2)

–  16 Threads in total (8 threads per instance) –  3rd Party clusterware not supported –  ASM must be used –  Cluster file systems not supported for database files

•  ACFS now supports database files (12.1.0.2 – EE)


What about HA and DR?

What options are you considering?

•  Oracle Real Application Clusters (RAC) •  Standby Databases


What about Disaster Recovery?

Can Standard Edition Provide DR?

Yes… a quick, easy answer!


The Core of Disaster Recovery

Can be implemented using:

•  Custom Scripts

•  Third Party Products

–  Dbvisit (Global)

–  Up to Data (Germany)

–  YDC (Japan)

–  Red Partner (Latin America)

Standby Databases



•  Custom Scripts

–  Not Generic

–  Version compatible?

–  Does everyone know the code?

–  Maintenance

–  Lack of testing

Picture


Third Party Products

•  Dbvisit (Global)

•  Up to Data (Germany)

•  YDC (Japan)

•  Red Partner (Latin America)



PRIMARY SITE SECONDARY SITE(S)

PRIMARY DATABASE

STANDBYDATABASE

LOG EXTRACT1 TRANSPORT2 LOG APPLY3

Archived Logs

Third Party


Backup and Recovery


•  Oracle Real Application Clusters (RAC) •  Standby Databases •  Backup and Recovery

–  RMAN –  Data Pump (exp/imp)


What is RMAN? •  Oracle Recovery Manager – RMAN •  I see it as a “safety net” for DBAs •  Helps you to be prepared for disasters

–  Natural –  Human –  Hardware

•  Even if you have a standby database you still need backups! –  What-if:

•  Both primary/standby is lost •  Logical corruption replicates through to your standby


RMAN helps you protect what is important

•  Database Files •  Archive Logs •  Control Files •  Server Parameter Files

Do not forget about Oracle SoUware and Opera@ng System


A bit of RMAN new features

•  Key Improvements in 12c –  SQL Commands in RMAN !!! –  Table Recovery (Auxiliary instance used) –  Improved Active Duplication (backup sets) –  Network-Enabled Restore (restore datafile from standby or primary) –  Improved multisection backup options (Incremental Backups and Image Copies) –  Fast Standby database synchronization (Using Services) –  Multi-tenancy support –  Cross-Platform Backup/Restore


Recovery Manager (RMAN) •  Limitations:

–  No parallel backup option (Multiple channels)* –  No encryption –  No use of Block Change tracking for fast incremental backups

* DBMS_PARALLEL_EXECUTIVE possible workaround


Archivelog vs. No-Archivelog Mode

•  No-Archivelog Mode: –  Only Cold backups

•  Database is shutdown when performing backup – downtime!! –  Other … kind of backup methods include:

•  export/import •  datapump

•  Archivelog Mode –  Online Redo logs are archived following a log switch –  Required for Online Backups

•  No Downtime –  Note: Does require extra disk space! –  Make sure you have sufficient redo log groups

SQL> connect / as sysdbaSQL> archive log list;SQL> select log_mode from v$database;SQL> show parameter recoverySQL> shutdown immediate;SQL> startup mountSQL> alter database archivelog;SQL> shutdown immediate;SQL> startupSQL> archive log listSQL> select log_mode from v$database;


Data Pump

•  Better control on the job running – it provides features like start, stop, restart •  Failed jobs can be restarted •  Backup jobs can be monitored •  Supports the export/import operations over the network. The

NETWORK_LINK parameter initiate the export using a database link. •  V$session_longops view can be used for the time estimation for the data

pump jobs •  It supports interactive mode that allows the dba to monitor or interact with

ongoing jobs


Data Pump Limitations: •  The value of PARALLEL is restricted to 1 in the Standard Edition of

Oracle Database. •  Cannot use Block-Level media recovery •  Dumps can not be compressed •  Data can not be encrypted

Careful if you are exporting from EE to SE. –  There may be objects that are not supported in SE.

•  Bitmap indexes etc


Backups

Test Test Test Test!!


Logical Data Replication


•  Oracle Real Application Clusters (RAC) •  Standby Databases •  Backup and Recovery

–  RMAN –  Data Pump (exp/imp)

•  Logical Data Replication


Logical Data Replication Options •  Streams* •  Oracle GoldenGate •  Dell Shareplex •  Dbvisit Replicate •  Attunity Replicate

*Streams only supports synchronous capture in Oracle SE. *Streams is deprecated in Oracle 12c.


•  Standby Database •  Backup and Recovery (RMAN) •  Oracle RAC •  Flashback Database •  Data Pump •  Logical Replication

Do I need Enterprise Edition for these options?

EE SE/SE2 SE1

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✔ ✔ ✔

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✔ ✗ ✗

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✔ ✔ ✔

•  Restric(ons apply


Agenda



Cloud


Cloud •  Standard Edition works on:

–  Oracle Cloud –  Amazon AWS –  Microsoft Azure –  Rackspace –  Other Providers

Basically any platform that you can install Oracle you can Install Oracle SE2.


Cloud Uses for the CLOUD: •  Run production •  Run test •  Run QA •  Run Reporting in the CLOUD •  Run DR in the CLOUD Any use of EE in the cloud… can run on SE2.


Agenda



Oracle Licensing


Licensing – Know the Basics Two Main License Options:

–  Named User Plus (NUP) License –  Oracle Processor License

Oracle Named User Plus (NUP) –  Think of it as: 1 User = 1 License –  Rule of thumb; > 50 users, review Processor License –  Remember the minimums

•  SE1 and SE - 5 Users for Company •  SE2 – 10 per server •  EE - 25 Users per Oracle Processor License (not per socket)


Licensing – Know the Basics •  Oracle Processor License

–  For SE/1/2 •  Look at Physical Sockets, not CPU Cores! •  1 Oracle Processor = 1 Socket

–  For EE •  Count ALL CPU Cores •  Review the “Oracle Processor Core Factor Table”

•  Example: –  Intel Xeon Quad Core CPU Factor is 0.5 –  Oracle Processor License = 4 Cores x 0.5 –  Oracle Processor License Required = 2


Agenda



Restrictions of Standard Edition

Yes, it is important to know the limitations!


Restrictions of Standard Edition •  CPU Limitation

–  SE1 •  max. 2 CPU Sockets

–  SE •  max. 4 CPU Sockets

–  SE2 •  Max. 2 CPU Sockets

–  Thread Limit: –  16 Threads –  8 Threads per Instance (If RAC used)


Restrictions of Standard Edition

•  Some Features not available: –  Flashback Database –  Parallel Options example (parallel backups, query etc) –  Block change tracking for fast incremental backups –  Online Index Rebuilding –  Automatic Workload Repository (extra license options) –  Online Datafile Move (12c) –  Cross-platform Backup and Recovery (12c)


License Options NOT Available with SE

•  Partitioning •  Advanced Security •  Advanced Compression •  Diagnostics Pack •  Tuning Pack •  Active Data Guard •  Real Application Testing •  Multi-Tenancy (only 1 PDB in SE)


Licensing – Recommended Reading Oracle Processor Core Factor Table •  http://www.oracle.com/us/corporate/contracts/processor-core-factor-table-070634.pdf Oracle Software Investment Guide •  http://www.oracle.com/us/corporate/pricing/sig-070616.pdf


Conclusion

•  Oracle Enterprise Edition is truly amazing BUT •  Don’t forget about its little brother “Oracle Standard Edition”, review

–  High Availablity •  Oracle RAC is possible

–  Disaster Recovery •  Standby Databases is possible

–  Performance Tuning and Diagnostics •  With 3rd Party products is possible

–  Parallelism •  Some workaround possible

•  Yes, there are shortages / missing options –  BUT 3rd Party Products Available!

[db tech showcase Tokyo 2016] E34: Oracle SE - RAC, HA and Standby are Still Available. Even Cloud!...

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Transcript of [db tech showcase Tokyo 2016] E34: Oracle SE - RAC, HA and Standby are Still Available. Even Cloud!...