The document discusses Acer migrating their Oracle database known as CCDB to Amazon Aurora on AWS. It provides an overview of Amazon Aurora and other AWS database services like Database Migration Service. It then shares details of Acer's migration journey, including challenges faced and how AWS services and support helped address them. Infrastructure Event Management was used to plan and execute the migration through various stages while ensuring high availability of CCDB during the process.

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T A I P E I
10.15.19

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T A I P E I
Migrate and Modernize Your
Database with Amazon Aurora
Taylor Chu
Cloud Support Engineer
AWS
Miles Chen
Sr. Manager
Acer / Global IT
10.15.19
Ivan Cheng
Solutions Architect
AWS

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Agenda
- AWS Purpose Built DB
- Amazon Aurora
- AWS Database Migration Service
- Customer Sharing: Acer CCDB Migration (Oracle  Aurora MySQL)
- IEM Support for Acer CCDB

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AWS Purpose-built Databases
Relational Key-value Document In-memory Graph Time-series Ledger
DynamoDB NeptuneAmazon
RDS
Aurora CommercialCommunity
Timestream QLDBElastiCacheDocumentD
B

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What we hear from customers about legacy databases
AUDIT
Very expensive Proprietary Lock-in Punitive
licensing
You’ve got mail

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Amazon Aurora
MySQL and PostgreSQL-compatible relational database built for the cloud
Performance and availability of commercial-grade databases at 1/10th the cost
Performance
and scalability
Availability
and durability
Highly secure Fully managed
5x throughput of standard MySQL
and 3x of standard PostgreSQL;
scale-out up to
15 read replicas
Fault-tolerant, self-healing
storage; six copies of data
across three Availability Zones;
continuous backup to Amazon S3
Network isolation,
encryption at rest/transit
Managed by RDS:
No hardware provisioning,
software patching, setup,
configuration, or backups

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Amazon Aurora – key characteristics
1 Log-structured storage volume shared
between all cluster nodes
2
Optimized for high throughput3
Readers strictly read-only

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Core use cases: read scaling architecture
Auto Scaling optional
All readers treated the same
Any reader can be a failover
target
Application should use cluster
and reader endpoints
Dev Tip: Monitor cluster
topology for faster failover

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Aurora Solutions for Availability Disruptions
1. Patching your database software
 Zero downtime patching
2. Large-scale copying and reorganizations
 Fast cloning
3. DBA errors requiring database restores
 Backtrack
4. Disasters
 Multi Master/ Global replication

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Database Cloning
Get faster access to copies of your data so you can:
Test changes in pre-production on
relevant data sets
Reorganize a database with minimal
production impact
Save a point in time snapshot for data
analysis without impacting production
systems
1
2
3

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Fast database cloning with Amazon Aurora
Available for both MySQL and PostgreSQL compatible
versions of Amazon Aurora
Creation of clone takes a few minutes
Data copy happens only on write, when the original and
cloned volume start to differ
Operations on clone do not affect the source cluster
Up to 15 clones from the same source
Pay only for the data storage difference on the clone PRODUCTION DATABASE
CLONE CLONE
CLONE
DEV/TEST
APPLICATIONS
BENCHMARKS
PRODUCTION
APPLICATIONS
PRODUCTION
APPLICATIONS

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Backtracking databases
Easily undo changes to your data:
Reduce risk of database changes at
scale
Undo unintentional DML and DDL
changes
Mitigate risk of malicious changes to
your data
1
2
3
Avoid time consuming data restore
from backups
4

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Going back in time with Backtrack
t0 t1 t2
t0 t1
t2
t3 t4
t3
t4
Rewind to t1
Rewind to t3
Invisible Invisible
• Backtrack is not destructive
• You can backtrack multiple times to find the right point in time
• Pay for the volume of change records retained for the desired duration (up to 72 hours)
• Available for Aurora MySQL 5.6 compatible

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Master
Replica
Orange Master Blue Master
SQL
Transactions
Caching
SQL
Transactions
Caching
Aurora MySQL Multi-Master
Shared Storage Volume
 No Pessimistic Locking
 No Global Ordering
 No Global Commit-
Coordination
Replica
• Membership
• Heartbeat
• Replication
• Metadata
Cluster Services
1
1
1
1 1
1
2
2
2
2 2
2
3 3
3 3
3 3
1 3?
T1 T2
AZ1
AZ2
AZ3
Decoupled
Decoupled
Decoupled
 Decoupled System
 Microservices Architecture
2
 Optimistic Conflict
Resolution

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Aurora MySQL Global replication
Faster disaster recovery and enhanced data locality
Promote read-replica to
a master for faster
recovery in the event of
disaster
Bring data close to your
customer’s applications
in different regions
Promote to a master for
easy migration

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Aurora features helping with cost optimization

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Aurora Serverless
Responds to your application load automatically
Scale capacity up and down in < 10 seconds
New instance has warm buffer pool
Multi-tenant proxy is highly available

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Amazon Aurora Serverless use cases
Development and test databases:
• Easily provisioned
• Cost savings when DBs are not in use
• Simplify dev/test pipelines
Infrequently used applications
(e.g., low-volume blog site)
Applications with variable load - peaks of activity that
are hard to predict (e.g., news site)

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AWS Database Migration Service (DMS) easily and
securely migrate and/or replicate your databases and
data warehouses to AWS
AWS Schema Conversion Tool (SCT) convert your
commercial database and data warehouse schemas to open-
source engines or AWS-native services, such as Amazon
Aurora and Redshift
AWS Database Migration Service
Allow customers the freedom to choose the best data platform for their
needs #DBFreedom

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SCT
DMS
Migration Assessment
1
Schema Conversion
3
Production Data Migration
5
2
Feature Parity
Application Modification
4
The Steps for Database Migrations (Simplified)

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Customer
premises
Application users
AWS
Internet
VPN/DX
Keep your apps running during the migration
 Start a replication instance
 Connect to source and target
databases
 Select tables, schemas, or
databases
 Let AWS DMS load data, and
keep them in sync
 Switch applications over to
the target at your
convenience
AWS
DMS

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Database Migration Playbooks
• Topic-by-topic overview of how to migrate databases and
data warehouses to AWS services
• Covers all proprietary features and the different database
objects
• Migration best practices
• Oracle to Aurora MySQL – available
• Oracle to Aurora PostgreSQL – available
• Oracle to Aurora RedShift – available
• SQL Server to Aurora MySQL – available
• SQL Server to Aurora PostgreSQL – available
SCT DMS Playbook
Schema Data Best Practices

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Acer CCDB Migration Story
Miles Chen
Sr. Manager
Acer / Global IT

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Overview
Founded in 1976, Acer is now one of the
world’s top ICT companies. As Acer looks
into the future, it is focused on enabling a
world where hardware, software, and
services will fuse with one another to open
up new possibilities for consumers and
businesses alike.
HARDWAR
E
SERVICES
SOFTWAR
E

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CCDB Central Customers Database
2
10+
Years
Large
Amount of
Data
10 Million
requests a
day
CCDB
Service & Support
Social networks
Email marketing
CRM
Search
Mobile app
Website
eCommerce
Marketing campaign
Customer
Registration
Orchestrate
Single
Customer View
Customer
Experience
Secure
&
Compliance

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CCDB Integrations
2
The CCDB platform
provides a full set of APIs
enabling integration with
third party services
(internal or external).
CCDB
Back-end WS
Front-end API
SSO REST APIs
AcerPublicWebsite
Community
AcerAnswers(KB)
eCommerce
Service
Mobile
Hub
Registration
Cashbacksite(Vendor
O)
Cashbacksite(Vendor
T)
OtherAffiliations
...
EmailMarketingPlatform
BusinessIntelligence
...
CCDB platform
Global services
Local services
Google
Facebook
Twitter
...

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Why Migrate
Consolidation Cost Saving Optimization
Flexibility and
Agility

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Challenges Heterogeneous
Database and Cloud
Astronomical amount
of transaction / data
Complexity
of Surrounding Systems
and Teams
Limited
Downtime allowed

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IEM: Infrastructure Event Management

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Pillars of AWS Well-Architected
Security Reliability
Performance
efficiency
Cost
optimization
Operational
excellence

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IEM: Infrastructure Event Management
Execution

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Benefits of Migration DB to AWS
Single Point of Contact
• TAM: Technical Account Manager Simplify the communication Channel
Simple Tools
• DMS simplified the migration and replication task
Saving Cost
• Equal Performance with lower cost
Support Glocally
• Global 24*7 Support
• Local language and time zone

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Cloud Infra Readiness Check
Playbook & Cut-over Plan
Enterprise Support for CCDB IEM
Plan Execute ReviewInitiate
Load Test, Failover and Best PracticeIEM Workbook
-Event Details
-Architecture Review
-Scenario Planning
-Checklist
-Reliability
-Availability
-Scalability
-Security
-Monitoring
Onsite Support
Implementation
No Issue Description Solution
1 Migrated data became NULL when using TDE encrypted DMS
source columns
Workaround Provided
2 CDC task failed with uncoverable error “archived Redo log for
the sequence XX does not exist”
Backup Policy
Recommended
3 CDC Target high latency issue Instance Type Recommended
Enhanced Monitoring
4 CDC task failed with out of memory error Instance Type Recommended
Enhanced Monitoring

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Summary
• Transform and modernize your database with AWS’s purpose built
database and migration tools
• Amazon Aurora: security, performance, and availability of commercial-
grade databases at 1/10th the cost
• AWS Team can help you unshackle and achieve transformation
• Find out more: https://aws.amazon.com/solutions/database-migrations/

35. Thank you!
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