This presentation reviews the key methodologies that all members of your team should consider, before planning a migration from Oracle to Postgres including: • Prioritizing the right application or project for your first Oracle migration • Planning a well-defined, phased migration process to minimize risk and increase time to value • Handling common concerns and pitfalls related to a migration project • Leveraging resources before, during, and after your migration • Becoming independent from an Oracle database – without sacrificing performance With EDB Postgres’ database compatibility for Oracle, it is easy to migrate from your existing Oracle databases. The compatibility feature set includes compatibility for PL/SQL, Oracle’s SQL syntax, and built in SQL functions. This means that many applications can be easily migrated over to EDB Postgres. It also allows you to continue using your existing Oracle skills. For more information please contact us at sales@enterprisedb.com

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Migrating from Oracle to Postgres
For more information on how your organization can migrate existing
applications to Postgres please contact EDB at sales@enterprisedb.com

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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

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Who is EDB?

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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

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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.

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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

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Why Migrate?

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Is keeping the
“IT Lights” on
costing you
business and
your future?
Change the
“IT” Lights

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Little Money For
New Initiatives
Competitive
Disadvantage
$
t
$
Revenue
DBMS
Customer
Engagement

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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

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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
+

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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

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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

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The Key to Unlocking the Money:
EDB Postgres Advanced Server

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Security
Tools
Performance
Compatibility
EDB POSTGRES
ENTERPRISE

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Database Compatibility with Oracle®
Compatible with:
Your BusinessYour AppsYour People
Everything works
On EDB Postgres
Applications
Running on Oracle
Oracle
Developers

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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

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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
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• 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

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EDBMigration Toolkit

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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.

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How to get started

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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

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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%

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Iterative and Agile Motion Approach
Find the Sweet Spot
Prioritize and
Plan Migration
Build the Team
Migrate Deploy

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Steps to Migrate

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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

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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

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How EDB can help

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EDB can help you unlock money in
your IT stack to enable you to
innovate and compete

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Migration Process
Find the Sweet
Spot
Migration
Assessments
Migration
Plans
Migrate Deploy

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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

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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

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• 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

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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

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• 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

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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

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