Key Methodologies for Migrating from Oracle to Postgres
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The document outlines the benefits and steps for migrating from Oracle to PostgreSQL, emphasizing cost savings and software compatibility. EDB provides tools and expertise to facilitate this process, highlighting key features of its products and the potential for organizations to innovate and enhance customer engagement. The migration process is detailed, including assessments, planning, and execution, with an assertion that open-source relational database management systems have matured as a viable option for enterprise applications.
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- 1. © 2016 EnterpriseDB Corporation. All rights reserved. 1 Migrating from Oracle to Postgres For more information on how your organization can migrate existing applications to Postgres please contact EDB at [email protected]
- 2. © 2016 EnterpriseDB Corporation. All rights reserved. 2 Agenda • Who is EDB? • Why migrate? • Finding the money to migrate • How to get started • Steps to migrate • How EDB can help • Summary • Q&A
- 3. © 2013 EDB All rights reserved 8.1. 3 Who is EDB?
- 4. © 2016 EnterpriseDB Corporation. All rights reserved. 4 POSTGRES innovation ENTERPRISE reliability 24/7 support Services & training Enterprise-class features, tools & compatibility Certifications Product road-map Control Thousands of developers Fast development cycles Low cost No vendor lock-in Advanced features Enabling commercial adoption of Postgres
- 5. © 2016 EnterpriseDB Corporation. All rights reserved. 5 EDB is a Market Leader The Gartner report, Magic Quadrant for Operational Database Management Systems, by Donald Feinberg, Merv Adrian, Nick Heudecker, Adam Ronthal, and Terilyn Palanca was published October 12, 2015.
- 6. © 2016 EnterpriseDB Corporation. All rights reserved. 6 EDB is an Open Source Leader Amit Kapila Ashesh Vashi Bruce Momjian Dave Page Devrim Gunduz Jan Wieck Kevin Grittner Korry Douglas Muhammad Usama Robert M Haas Thom Brown
- 7. © 2013 EDB All rights reserved 8.1. 7 Why Migrate?
- 8. © 2016 EnterpriseDB Corporation. All rights reserved. 8 Is keeping the “IT Lights” on costing you business and your future? Change the “IT” Lights
- 9. © 2016 EnterpriseDB Corporation. All rights reserved. 9 Little Money For New Initiatives Competitive Disadvantage $ t $ Revenue DBMS Customer Engagement
- 10. © 2016 EnterpriseDB Corporation. All rights reserved. 10 Finding Money in IT Relative Cost for IT Stack Components Analytics High Value Invest for Brand Mobile Applications Middle-ware $ Database Bloat $ Virtual Machine Operating System Commodity Rationalize for Stability
- 11. © 2016 EnterpriseDB Corporation. All rights reserved. 11 Finding Money in IT 35% 80% 70 % Software Infrastructure Budget on DBMS (1) In House DBMS Apps Candidates to Move Off Expensive DBMS (2) Cost Savings (3) (1) Gartner, Forrester and EDB analysis (2) The State of Open-Source RDBMS, 2015, Gartner, April 2015 (3) The State of Open-Source RDBMS, 2015, Gartner, April 2015; EDB analysis of customer experiences and market prices +
- 12. © 2016 EnterpriseDB Corporation. All rights reserved. 12 Getting Money in IT Gartner: Relational OSDBMS has matured and today can be considered as a standard infrastructure choice for a large majority for new enterprise applications. 2009 Figure 1 Relational Open-Source DBMS Maturity Evaluation, 2015 Source: Gartner (April 2015) Figure 2 Relational Open-Source DBMS Maturity Evaluation,2015 Source: Gartner (April 2015) 2015 Open-Source DBMS Commercial Non-Mission Critical Applications Non-Mission Critical Applications Mission Critical Applications Mission Critical Applications Total Cost of Ownership Total Cost of Ownership DBMS Functionality DBMS Functionality DBA Tools DBA Tools Availability of DBA Resources Availability of DBA Resources
- 13. © 2016 EnterpriseDB Corporation. All rights reserved. 13 t Transform DBMS Revenue DBMS Customer Engagement Revenue DBMS Customer Engagement $ t $ $ $ Transform You Have The Money!
- 14. • “Nothing beats the reliability of Solaris.” • “We will lose customers if we move off Solaris.” • “I could not sleep at night if we moved off Solaris.” • “We cannot run our business on Linux. We have invested too much in Solaris to move now.” • “I built my career and this organization on Solaris!” You’ve Been Here Before
- 15. © 2013 EDB All rights reserved 8.1. 15 The Key to Unlocking the Money: EDB Postgres Advanced Server
- 16. © 2016 EnterpriseDB Corporation. All rights reserved. 16 Security Tools Performance Compatibility EDB POSTGRES ENTERPRISE
- 17. © 2016 EnterpriseDB Corporation. All rights reserved. 17 Database Compatibility with Oracle® Compatible with: Your BusinessYour AppsYour People Everything works On EDB Postgres Applications Running on Oracle Oracle Developers
- 18. © 2016 EnterpriseDB Corporation. All rights reserved. 18 Database Compatibility for Oracle includes: • SQL extension support − Decode, NVL, Substr, NVL2 − Date/time functions: add_months, extract, next_day • PL/SQL support − REF Cursors, Implicit and explicit cursors − Looping, variable declarations, conditional statements − Collections: Associative Arrays, Varrays, Nested tables − Bulk binding − Named parameters − User Defined Exceptions − Explicit Transaction Control − within a stored procedure • Tools − EDB*Plus – SQL*Plus look-a-like − EDB*Loader – SQL*Loader equivalent − EDB*Wrap – similar to the PL/SQL wrapper • Features − Packages − Stored procedures − Functions − Triggers − Hints − Database Links − Hierarchical Queries − Synonyms – Public and Private − Sequences − Rownum − Object types − Create type … as object − Create type … as table − Create type …as varray − Constructor and collection methods − Users/Roles − Dynamic SQL
- 19. © 2016 EnterpriseDB Corporation. All rights reserved. 19 Database Compatibility (cont.) • Data Types − Integer, number, char, double precision, float, varchar2, blob, clob, xmltype, rowid • Oracle-like Data Dictionary − ALL_, DBA_, USER_ views − Most commonly accessed views • Diagnostics - DRITA − System and session waits − Not exposed in PostgreSQL − Part of Advanced Server − Statspack-like reporting • Support for Functions: − REGEXP_INSTR − REGEXP_COUNT − REGEXP_SUBSTR • Oracle compatible partitioning syntax • Oracle compatible Materialized Views © 2013 EnterpriseDB. All rights reserved. • Package Support for: − DBMS_ALERT − DBMS_CRYPTO − DBMS_JOB − DBMS_LOB − DBMS_LOCK.sleep − DBMS_MVIEW − DBMS_OUTPUT − DBMS_PIPE − DBMS_PROFILER − DBMS_RANDOM − DBMS_RLS − DBMS_SCHEDULER − DBMS_SQL − DBMS_UTILITY • Package Support for: − UTL_HTTP for web server communications − UTL_URL − UTL_TCP − UTL_FILE − UTL_MAIL − UTL_SMTP − UTL_ENCODE
- 20. © 2016 EnterpriseDB Corporation. All rights reserved. 20 EDBMigration Toolkit
- 21. © 2016 EnterpriseDB Corporation. All rights reserved. 21 Survey: Ease of Migration 51% had slight to no modifications Organizations that migrated Oracle-based applications to EDB Postgres Advanced Server stated the degree to which they had to modify these applications: We were able to migrate all of our apps from Oracle to PPAS with little to no modifications. Besides saving on annual licensing fees, Database compatibility was our number one priority.
- 22. © 2013 EDB All rights reserved 8.1. 22 How to get started
- 23. © 2016 EnterpriseDB Corporation. All rights reserved. 23 Applications Inventory $5B company – Example • 100 - 150 total applications inventory • 60 - 90 Apps are Custom Apps Custom application footprint • 2 dual socket, quad core servers • 16 cores • 16 cores/app x ~ 50apps = 800 cores Apps of Innovation 20% of all Apps Application of Differentiation 60% of all Apps Application of Record 20% of all Apps Initial Target: 50 Apps Web & Mobile Custom Apps Custom Apps Oracle, SAP, MS
- 24. © 2016 EnterpriseDB Corporation. All rights reserved. 24 Staged Application Migration Process 50 Apps Pool Days/App # of Apps Net Savings 3yr (Net) ROI 50% 30% 20% 20 Days 40 Days 60 Days 25 Apps 15 Apps 10 Apps $3.7 Million $2.0 Million $1.2 Million 140% 109% 84%
- 25. © 2016 EnterpriseDB Corporation. All rights reserved. 25 Iterative and Agile Motion Approach Find the Sweet Spot Prioritize and Plan Migration Build the Team Migrate Deploy
- 26. © 2013 EDB All rights reserved 8.1. 26 Steps to Migrate
- 27. © 2016 EnterpriseDB Corporation. All rights reserved. 27 Steps to Migrate • Prepare Environment − Obtain and install necessary software − Establish connectivity between systems − Copy the Oracle JDBC jar file to jre/lib/ext directory in EDB Postgres Advanced Server Installation • Migrate Schema − Use Migration Toolkit in schema only mode − Resolve issues here before going to next phase • Migrate Data − Use command line MTK − Use copyViaDBLinkOra − Uses OCI to connect to Oracle − Use parallel threads − Use dblink_ora_copy function directly to bypass logging − Export Oracle data to flat files, load using EDB*Loader
- 28. © 2016 EnterpriseDB Corporation. All rights reserved. 28 Steps to Migrate con’t 28 • Port Application − Change connection information − Recompile /Link application (OCI or Pro*C) • Test − Verify application functionality − Address issues − Test performance − Tune • Integration − Establish co-existence strategy − Setup database links to other databases − Setup replication between Oracle or SQL Server and EDB Postgres Advanced Server • Rollout − System becomes production
- 29. © 2013 EDB All rights reserved 8.1. 29 How EDB can help
- 30. © 2016 EnterpriseDB Corporation. All rights reserved. 30 EDB can help you unlock money in your IT stack to enable you to innovate and compete
- 31. © 2016 EnterpriseDB Corporation. All rights reserved. 31 Migration Process Find the Sweet Spot Migration Assessments Migration Plans Migrate Deploy
- 32. © 2016 EnterpriseDB Corporation. All rights reserved. 32 Applications Inventory Apps of Innovation 20% of all Apps Application of Differentiation 60% of all Apps Application of Record 20% of all Apps Initial Target: 50 Custom Apps Web & Mobile Custom Apps Custom Apps Oracle, SAP, MS Prop. Apps ISV Apps
- 33. © 2016 EnterpriseDB Corporation. All rights reserved. 33 Database Migration Assessment 33 Oracle 1. Analyze Oracle schema layout for supported features in PPAS 2. Review features used in Oracle client application 3. Supported features and recommended fixes Difficult Easy 4. Overall composite score and migration plan with workarounds and time estimates
- 34. © 2016 EnterpriseDB Corporation. All rights reserved. 34 • Online − Live and interactive training delivered to remote participants by trained EDB personnel (or a contractor) − 1-5 days − Scheduled in advance; schedules are published at EnterpriseDB.com • On-Demand − Pre-recorded training sessions − 4-14 hours − Available at EnterpriseDB.com • Onsite − Delivered at the customer site by EDB trained personnel − Marketed and sold by EDB or EDB Partner (licenses EDB materials) − 1-5 days scheduled as needed Global Training Services
- 35. © 2016 EnterpriseDB Corporation. All rights reserved. 35 EDB Postgres Deployment Services Postgres Eval Support Kit Postgres Kick Start • w. Developer Subscription Postgres Team Success Postgres Team Success • w. RDBA Postgres Enterprise Enablement • w. RDBA SolutionCost Postgres Deployment Pre-Deployment Post-Deployment
- 36. © 2016 EnterpriseDB Corporation. All rights reserved. 36 • DBMS Migrations to Open Source are the Next Wave − Migrations are no longer impossible − Others have done – you can do it too! • Compatibility tools are key − Faster − Cheaper − Less risk • EnterpriseDB provides − Oracle compatibility − Automated tools to migrate from Oracle (data, schema, stored procedures) − Automated tools to migrate from MySQL, Sybase, SQL Server (data, schema) − Migration Expertise Summary
- 37. © 2016 EnterpriseDB Corporation. All rights reserved. 37 The Time is Now Transform your IT Core to Fund Customer Engagement Innovation “With EDB Postgres Advanced Server, we found a solution that not only provided exceptional performance, but made it easy to migrate existing data ... we were better able to control software costs.” Steve Akers, CIO, Genscape “Open-source relational DBMSs (RDBMSs) have matured and today can be considered by information leaders, DBAs and application development management as a standard infrastructure choice for a large majority of new enterprise applications.” Gartner Report , The State of Relational Open Source DBMSes, 2015
- 38. © 2016 EnterpriseDB Corporation. All rights reserved. 38