reducing the risks of migrating off oracle

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Reducing the Risks of Moving Off Oracle

EDB Postgres Enterprise reduces risks… Raises…


…you could use your Oracle® skills without using Oracle?

…you could keep your investments in

PL/SQL and not use Oracle? …you could do both and save money?

What if…


But wait, change is not without risks!

Re-training Risks

Technical

Risks

RISK

e g r a

t i o

n I

n t


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

Data Adapters Wrappers for External DBs

Cost Savings

Cap core license quantities

Reduce core licenses

Eliminate core licenses

EDB Postgres Enterprise reduces risks… and raises…


EDB Migration Toolkit

Migration Toolkit converts Oracle database objects to Advanced Server objects

Data Compatibility

- Data types: all data including Blobs, Clobs and Object types… - Meta data like: schemas, tables, indexes, views, partitions, roles… - Code: triggers, stored procedures, users, roles, database links …


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

Supports: • Oracle Dynamic SQL

• Pro*C compatible anonymous blocks, and

• Oracle-compatible CALL statement


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


Enterprise Manager (Monitor, Alert, Manage & Tune)

Active Data Guard features: Failover and Hot Standby Reads

Tools for Mission-critical Apps

Failover server in Hot Standby mode also allows

READ access


…database compatibility for Oracle is compatible with:

10

EDB Postgres Enterprise…

Your technology

Minimal Application re-writes


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


Virtual Private Database implemented using a package compatible with Oracle’s DBMS_RLS (row level security)

Compatibility for Developers


Resource Manager (CPU & I/O resource allocation)

Compatibility for DBAs

Password Profiles


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



16


Your technology Your people

No Application re-writes

Minimal re-training


Replication with Oracle

TRANSACTION

REPLICATION

Queries Reports

POSTGRES PLUS ADVANCED SERVER

TABLE C

TABLE D

ORACLE

Procs Objects

TABLE A

TABLE C

TABLE B

TABLE D

Improved OLTP

Performance

Inexpensive Query / Reporting


XA 2-Phase Commit Support

Transaction Manager (e.g. Tuxedo)

XA Resource Manager in

Oracle


Advanced Server

Phase 1


Oracle


Advanced Server

Phase 2

Transaction Manager (e.g. Tuxedo)


EDB Postgres Data Adapters

Read / Write

MySQL

Read / Write

MongoDB

Read / Write Hive/HDFS

File / CSV ODBC / JDBC

LDAP

Many others… Twitter / Facebook

EDB Postgres Advanced

Server



20


Your technology Your people

No Application re-writes

Minimal re-training

Easy Integration

Your business


Strategy Risk Time Effort Benefits Savings

New Reporting Applications Low Fast Low

•  Leverages existing Oracle reporting skills •  Proof point: Oracle alternative for reporting •  No new Oracle licenses

Low

Offload Reports using Replication Low Fast Med

•  Leverages existing Oracle reporting skills •  Proof point: integration into Oracle infrastructure •  No new Oracle licenses

Low

New Transaction Applications Low Application

Dependent Low •  Leverages existing Oracle report & txn skills •  Proof point: viable option for txn processing •  No new Oracle licenses

Med

Old Applications Due for Re-writes / Updates

Med Application Dependent Med

•  Leverages existing Oracle skills and PL/SQL •  Proof point: retain PL/SQL investments •  Recycle existing Oracle licenses

Med

Migrate / Rewrite non-mission critical Apps

High Application Dependent Med

•  Leverages existing Oracle skills and PL/SQL •  Proof point: •  Significant cost savings

High

New mission critical applications

High Application Dependent High

•  Leverages existing Oracle skills •  Proof point: Postgres tools for HA, Management •  Dramatic cost savings

High

Adoption Strategies to Reduce Risk

EDB’s Migration Assessment Service helps you build a custom strategy to move off Oracle that reduces your risk and maximizes your savings and success.


…you could use your Oracle® skills without using Oracle!

…you could keep your investments in

PL/SQL and not use Oracle! …you could do both and save money!

What if… When will you…


Additional Resources…

•  EDB Downloads: −  www.enterprisedb.com/downloads

•  Case study: Clear Capital Shrinking Oracle Costs −  www.enterprisedb.com/clear-capital

•  eBook comparing EDB Postgres Enterprise to Oracle Enterprise Edition −  Email: [email protected]

reducing the risks of migrating off oracle

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