Join this session to hear this real-life story from KT/KTDS. They will share the experience of the migration of their Oracle Database to EDB Postgres. Their story will include adoption history, technology verification, governance, diffusion, adoption effect and open source database technical support. Furthermore, they will discuss their application methodology approach and migration tools deployed. Don't miss this session to learn from their experience and insights.

1. Open Source Database
Adoption in Telecom

2. Contents
1 About kt & kt ds
2 Open Source SW trend in Korea
3 Open Source SW case studies in Korea
4 kt's EDB PAS adoption steps in detail
5 Implications of kt's EDB PAS adoption cases

3. About kt & kt ds1
ktis no. 1 telecommunication company in Korea,
providing mobile, internet line, fixed line, IPTV, and IT services
kt ds is an IT subsidiary of kt, providing IT total services
No.1 134 years 5G 5.0 million
2018 KS-QEI No.1
in Mobile Communication /
High-Speed Internet / IPTV
The history of
communications in Korea
A whole new world
made of 5G
Over 5.0 million kt GiGA
service
subscriptions (Mar. 2019)

4. Open Source SW trend in Korea (1)
Open Source SW Adoption Purposes
2
Open Source SW Adoption Reasons
Open Source SW reduces IT operational costs and prevents commercial license dependencies.
Recently its technology is applied to ICT area as well.
73.1%
33.5%
15.6%
21.8%
17.1%
81.3%
46.0%
21.4%
15.3% 15.1%
Cost Reduction Preventing
Commercial License
Dependencies
Flexible SW
Modification &
Integration
Rich References Adoptable to New
Technology
2017 2018
※ Reference: NIPA, ‘18 Open SW Market Research Report

5. Open Source SW trend in Korea (2)
Open Source SW Adoption Fields
2
Open Source SW Adoption Ratio
Open Source SW adoption increased in not only the legacy fields, such as OS/Web/DB, but
also the new technology fields such as Cloud, Bigdata and AI
18.1%
16.9%
13.6%
11.3%
9.9%
8.3%
8.2%
3.2%
0.4%
OS/Server
Web/WAS
DB/DBMS
Application
Management SW
Cloud
IoT
Bigdata
AI
※ Reference: NIPA, ‘18 Open SW Market Research Report

6. Open Source SW case studies in Korea3
KEPCO
‖ Korea Electric Power Corporation
‖ Applied Open Source GIS SW in next generation of
Distribution Automation System(DAS) & Advanced
Distribution Management System(ADMS)
‖ Reduced Cost, Prevented commercial license
dependencies, Enhanced OSS skill level
Kakao Bank
‖ On-line Bank in Korea
‖ Applied Open Source DB in customer
authentication & channel system
‖ Cost Efficiency, flexibility, scalability

7. Open Source SW case studies in Korea3
kt Open Source Approach Background (1)
Traditional Communication Services ICT Convergence Services
Internet
MobilePhone
Wi-Fi
AINavigation
Connected car
Hologram HomecamDrone
CCTV
IoT EV
Satellite

8. Open Source SW case studies in Korea3
Cost Reduction IT re-Designing New. Tech Investment
Continuously increasing IT
investment costs
Increasing demands for
efficient IT operation costs
Carrying forward the next-
generation IT for cloud
business and business
innovation
Demands for ICT new
technology investment
kt Open Source Approach Background (2)

9. kt's EDB PAS adoption steps in detail4
Why kt have chosen EDB Postgres
vs. vs. another
Why ?
‖ Operators/developers friendly with Oracle
compatibility
‖ Active community
‖ Good functionality and stability
‖ References for advanced telco systems
Why not ?
‖ Open Source SW introduction economic feasibility
analysis
‖ Compliance issues prevention

10. kt's EDB PAS adoption steps in detail4
Proof of Concepts
Pilot
‖ Targets
ITO entrusted Oracle system, less critical services,
proper AP complexity, source code retention, Pro * C
use
‖ Purpose
Secure own skill level through project
Determine to expand through performance, function
and stability verification
‖ Result
Confirm open source transformability,
Measuring transform costs
VirtualUsers(max) Handlingper second(max)
Averageresponsetime AverageCPUuserate
Oracle MS-SQLEDBPAS
800 800 800
266.6 266.5
213.8
0.04 0.09
31.06
15.6 26.2
60.2
DB PoC
‖ PoC SW
Oracle DBMS, SQL Server, EDB PAS
‖ Purpose
Deduct potential issues and considerations
‖ Result
Determine systems to apply EDB PAS, based on
verification items such as function, performance,
stability, compatibility

11. kt's EDB PAS adoption steps in detail4
Establishing Adoption Strategy
Maximize IT cost
reduction
✓ Massive, willful downsizing (top management sponsored)
✓ DBMS, WAS focused downsizing
Standardization
✓ Make OSS adoption as a principle
✓ Selection of standard open source SW List
✓ Standardization including installation, operation, and upgrade
Ensuring stability
✓ Commercial/Community dual ladder
✓ Establishment of technical support system according to service
characteristic(INCLD Community Editions)
✓ Perform preliminary diagnostics to minimize transformation risk
Compliance
issues prevention
✓ Pre & Post inspection of SW use
✓ Add Open Source SW provisions in standard contract form
1
2
3
4

12. kt's EDB PAS adoption steps in detail4
Cloud Combining Migrating to OSS Convergence Services
Combine with cloud to build
flexible system
Migrate high-cost commercial
SW to open source SW
Build & utilize new services to
launch ICT convergence
services
Adoption Type
+

13. kt's EDB PAS adoption steps in detail4
Adoption Type ① Cloud Combining
iPhone Reservation System
‖ Cost reduction by Cloud and OSS (JBoss AS, EDB PAS) ($4.4M cost reduction on 5year TCO)
‖ kt service differentiation from Rivalry by zero-downtime (Year 2012~)
L4
WAS/
WEB
WAS/
WEB
WAS/
WEB
WAS/
WEB
Oracle
#1
L4
Oracle
#2
…
L4 L4
…
…
VM
VM
VM
VM
VM
VM
VM
VM
VM
VM
VM
VM
VM
VM
VM
VM
WEB
WAS
DB
WEB/
WAS
DB
Loadbalancing
>
Loadbalancing
MCSG
Active Standby
PAS
#1
PAS
#2
Active Standby
800K / 5min
transactions

14. kt's EDB PAS adoption steps in detail4
Adoption Type ② Migrating to OSS (1)
kt Migration Project
‖ Application of methodology for commercial DB transform to OSS(OTPM)
‖ Development and application of diagnostics tool & monitoring tool
Migration Go LiveAssessment Preparation
Query:250
Success:150
Fail:50
DB
System
Application
d
i
a
g
※ OTPM : Oracle to EPAS Migration

15. kt's EDB PAS adoption steps in detail4
Adoption Type ② Migrating to OSS (2)
0
20
40
60
80
100
50 100 150 200 250 350 500
AS-IS PostgreSQL
Authorization System
‖ Mission Critical system migration
‖ PostgreSQL is used
‖ Low-cost, high-efficiency, stable operation effect
‖ Improved load and throughput with simple logic
Network Management System
‖ EDB PAS migration with SQL tuning for large
data processing (45K transactions/sec)
‖ Leverage system improvement opportunity for
OSS adoption & migration(SQL 2,200개)

16. kt's EDB PAS adoption steps in detail4
Adoption Type ③ Convergence Services
GiGA IoT Home Service
life-enhancing services
‖ Build systems quickly
‖ Gain flexibility by membership trends
‖ Review of logical replication adoption
Map System
‖ Used PostGIS
‖ Build high traffic and complex GIS logic
‖ Flexible launch of related derivative services

17. kt's EDB PAS adoption steps in detail4
kt’s using case
8 200+ 20+
Installing PostgreSQL/EDB PAS
on average 8 servers a month
Applied EDB PAS to over 200
systems
Transformed to EDB PAS over
20 services

18. kt's EDB PAS adoption steps in detail4
Cost Reduction Reliable IT Time to Market
80% reduction of purchase
cost and maintenance (MA)
cost compared to commercial
SW
Combine with cloud for easy
scale-out
Select DBMS according to
purpose
Quick application / release of
new technology
Combine with Dev/Ops
development methodology
Adoption Effects

19. Implications for kt's EDB PAS adoption cases5
Standardization
‖ Select Standard Open Source SW
‖ Apply and Expand Open Source SW in enterprise level
‖ Establish technical support system according to service type (INCLD
Community Editions)
Technical Support
Staff & Personnel
Securement
‖ Professional workforce sourcing
‖ Workforce internalization through Pilot
‖ Existing operational manpower utilization through conversion education
(switch-over from Legacy)
Goals Clarification &
KPIs Operation
‖ Company-wide introduction goal clarification
‖ A common understanding of goals
‖ Yearly performance measurement and compensation according to the
target