migrating from oracle to postgres - carahsoft · migrating from oracle to postgres. for more...

© 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]


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

© 2013 EDB All rights reserved 8.1. 3

Who is EDB?


POSTGRESinnovation

ENTERPRISEreliability

24/7 support

Services & training

Enterprise-class features, tools &

compatibility

Certifications

Productroad-map

Control

Thousands of developers

Fast development

cycles

Low cost

No vendor lock-in

Advanced features

Enabling commercial adoption of Postgres


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.


Why Migrate?


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

Change the “IT” Lights


Finding Money in ITRelative Cost for IT Stack Components

Analytics

High ValueInvest for Brand

Mobile

Applications

Middle-ware

$ Database Bloat $

Virtual Machine

Operating System

Commodity Rationalize for Stability


Little Money ForNew Initiatives

Competitive Disadvantage

$

t

$Revenue

DBMS

CustomerEngagement


t

TransformDBMS

Revenue

DBMS

Customer Engagement

Revenue

DBMS

Customer Engagement

$

t$ $

$

Transform

You Have The Money!

• “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


The Key to Unlocking the Money:

EDB Postgres Advanced Server


Security

Tools

Performance

Compatibility

EDB POSTGRES

ENTERPRISE


Raises…

Reducing the Risk of Change

Technical

Data Compatibility

Code Compatibility

Tools for Mission-critical apps

Re-Training

Compatible Developer features: PL/SQL

DBA features: Workload Mgr & Diagnostics,

Compatible tools: SQL*Plus, SQL*Loader

Integration

Replicate to and from Oracle

XA Resource Manager

Foreign Data Wrappers for External DBs

Advanced Server reduces risks…


Database Compatibility for Oracle

• SQL extension support• Decode, NVL, Substr, NVL2, Date/time functions• DDL syntax support

• PL/SQL support – native language • REF Cursors, Implicit and explicit cursors• Looping, variable declarations, conditional

statements• Collections: Associative Arrays, Varrays, Nested

tables

• Pragmas• Named parameters

• User Defined Exceptions• Explicit Transaction Control(within sp)

• Tools• EDB*Plus – SQL*Plus look-a-like• EDB*Loader – SQL*Loader equivalent

• Oracle-like Data Dictionary• ALL_, DBA_, USER_ views

• Wait Events• System and session waits

• Statspack-like reporting

• Features• Packages

• Stored procedures

• Functions• Triggers

• Hints• Hierarchical Queries

• Synonyms – Public and Private

• Sequences• Rownum

• Users/Roles• Dynamic SQL

• Materialized Views

• Partitioning

• PL/SQL supplied packages• 14 DBMS• 6 UTL

• Data types• Blobs, Clobs, XMLTYPE, VARCHAR2,

NUMBER, CHAR, Integer


Advanced Server executes PL/SQL Stored Procedures, Triggers, Packages and understands extensions like DUAL, Rownum, Decode, NVL(2) and Substr().

Code Compatibility – PL/SQL

Emulation

Translation

Layer on PL/pgSQL

Compiler ✔Interpreter ✔Debugger ✔


my_program.pgc

ecpgPlus pre-compiler

C compiler

Linker

ecpgPlus (Pro*C support)

Code Compatibility – Pro*C

ecpglib

other libraries

my_progam.o

my_program.c

my_program


Open Client Library - OCL (OCI support)

Code Compatibility - OCI

Application Programs

Oracle’s OCI-Lib

Published API

UPI

Wire Protocols

Oracle® Call Interface stack

Application Programs

Open Client Library

OCI Compatible API

libpq

Wire Protocols

EDB’s Open Client Library

Same Apps


Compatibility for Developers

Query Hints Packages

- UTL_ENCODE- UTL_FILE- UTL_HTTP- UTL_MAIL- UTL_SMTP- UTL_URL

- Custom

- DBMS_ALERT- DBMS_CRYPTO- DBMS_JOB- DBMS_LOB- DBMS_LOCK- DBMS_OUTPUT- DBMS_PIPE- DBMS_PROFILER- DBMS_SCHEDULER- DBMS_SQL- DBMS_RANDOM- DBMS_RLS- DBMS_UTILITY

- Default Optimizer Hints- Access Method Hints- Join Order Hints- Join Relation Hints- Global Hints- Append Hints


DRITA (Dynamic Runtime Instrumentation Tools Architecture)

working with Wait events …

Compatibility for DBAs• Functions− get_snaps()− sys_rpt()− sess_rpt()− sessid_rpt()− sesshist_rpt()− purgesnap()− truncsnap()

• Statspack-like AWR Reports− edbreport()− stat_db_rpt()− stat_tables_rpt()− statio_tables_rpt()− stat_indexes_rpt()− statio_indexes_rpt()− edb$system_waits− edb$session_waits− edb$session_wait_history

• Catalog Views− edb$system_waits− edb$session_waits− edb$session_wait_history

− ~50 Dictionary Views


Compatibility for Developers and DBAs

• EDB*Plus • EDB*Loader


EDBMigration Toolkit


How to get started


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 ofInnovation

20% of all Apps

Application of Differentiation60% of all Apps

Application of Record

20% of all Apps

Initial Target: 50 Apps

Web & Mobile

Custom Apps

Custom Apps

Oracle, SAP, MS


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%


Iterative and Agile Motion Approach

Find the Sweet Spot

Prioritize and Plan Migration

Build the Team

Migrate Deploy


Steps to Migrate


Steps to Migrate• Prepare Environment

− Obtain and install necessary software

− Establish connectivity between systems

• 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− Export Oracle data to flat

files, load using EDB*Loader

• Port Application− Change connection information− Recompile /Link application

• Test− Verify application functionality− Address issues− Test performance − Tune

• Integration− Establish co-existence strategy− Setup database links to other

databases− Setup replication

• Rollout− System becomes production


How EDB can help


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


Applications Inventory

Apps ofInnovation

20% of all Apps

Application of Differentiation60% 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


Database Migration Assessment

32

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


• 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


EDB Postgres Deployment Services


• 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


The Time is NowTransform 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 byinformation leaders, DBAs and application development management as a standardinfrastructure choice for a large majority of new enterprise applications.”Gartner Report , The State of Relational Open Source DBMSes, 2015

migrating from oracle to postgres - carahsoft · migrating from oracle to postgres. for more...

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