Presented the "A Cloud Journey - Move to the Oracle Cloud" on behalf of Ricardo Gonzalez during Bulgarian Oracle User Group Spring Conference 2019. This presentation discusses various methods on how to migrate to the Oracle Cloud and provides recommendations as to which tool to use (and where to find it) especially assuming that Zero Downtime Migration is desired, for which the new Zero Downtime Migration tool is described and discussed in detail. More information: http://www.oracle.com/goto/move

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A Cloud Journey
Move to the Oracle Cloud

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A Cloud Journey
Move to the Oracle Cloud
Ricardo Gonzalez
Product Manager
Oracle Database Cloud Migration
2019

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A Cloud Journey
Move to the Oracle Cloud
Confidential – Oracle Internal
Markus.Michalewicz@oracle.com
@OracleRACpm
http://www.linkedin.com/in/markusmichalewicz
http://www.slideshare.net/MarkusMichalewicz
Markus Michalewicz, Senior Director of Product Management,
Database High Availability & Scalability Solutions
June 7, 2019

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RAC One Clusterware
5
High Availability & Scalability PM Team
RAC ASM ACFS
GoldenGate
Application Continuity
Data Guard
MAA
Sharding

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A little bit of history first

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1977
8
Software Development Laboratories
SDL
Later Relational Software IncSanta Clara,
California

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1977
Santa Clara,
California
Software Development Laboratories
SDL
Later Relational Software Inc
1979
Oracle
First Commercial
RDBMS

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1981
C Programming Language
chosen for v3
1982
Relational Software Inc
becomes Oracle

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1982
Relational Software Inc
becomes Oracle
1983
Portability at its best
• Atomic execution of SQL statements
• Nonblocking queries
• Mapping of data in pre-join formatsOracle V3

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1991
Oracle V6.2
1992
Oracle V7
1983
Oracle V3
1984
Oracle V4
1985
Oracle V5
1986
Oracle V5.1
1988
Oracle V6
1997
Oracle V8
1998
Oracle V8i
2001
Oracle V9i
2003
Oracle 10g
2005
Oracle 10gR2
2007
Oracle 11g
2009
Oracle 11gR2
2013
Oracle 12c
2016
Oracle 12cR2
2018
Oracle 18c
2019
Oracle 19c

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1991
Oracle V6.2
1992
Oracle V7
1983
Oracle V3
1984
Oracle V4
1985
Oracle V5
1986
Oracle V5.1
1988
Oracle V6
1997
Oracle V8
1998
Oracle V8i
2001
Oracle V9i
2003
Oracle 10g
2005
Oracle 10gR2
2007
Oracle 11g
2009
Oracle 11gR2
2013
Oracle 12c
2016
Oracle 12cR2
2018
Oracle 18c
2019
Oracle 19c
• Row level locking
• Hot backup
• First version of PL/SQL
• High Speed OLTP

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1991
Oracle V6.2
1992
Oracle V7
1983
Oracle V3
1984
Oracle V4
1985
Oracle V5
1986
Oracle V5.1
1988
Oracle V6
1997
Oracle V8
1998
Oracle V8i
2001
Oracle V9i
2003
Oracle 10g
2005
Oracle 10gR2
2007
Oracle 11g
2009
Oracle 11gR2
2013
Oracle 12c
2016
Oracle 12cR2
2018
Oracle 18c
2019
Oracle 19c
• PL/SQL Stored procedures
• Triggers
• Distributed 2-phase commit
• Shared cursors
• Cost based optimizer

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1991
Oracle V6.2
1992
Oracle V7
1983
Oracle V3
1984
Oracle V4
1985
Oracle V5
1986
Oracle V5.1
1988
Oracle V6
1997
Oracle V8
1998
Oracle V8i
2001
Oracle V9i
2003
Oracle 10g
2005
Oracle 10gR2
2007
Oracle 11g
2009
Oracle 11gR2
2013
Oracle 12c
2016
Oracle 12cR2
2018
Oracle 18c
2019
Oracle 19c
• Real Application Clusters (RAC)
• Integrated Data Mining with OLAP
• Data Guard Broker

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1991
Oracle V6.2
1992
Oracle V7
1983
Oracle V3
1984
Oracle V4
1985
Oracle V5
1986
Oracle V5.1
1988
Oracle V6
1997
Oracle V8
1998
Oracle V8i
2001
Oracle V9i
2003
Oracle 10g
2005
Oracle 10gR2
2007
Oracle 11g
2009
Oracle 11gR2
2013
Oracle 12c
2016
Oracle 12cR2
2018
Oracle 18c
2019
Oracle 19c
• Sharding
• Snapshot based replication
• PDB Hot Clone
• Enhanced Partitioning
• Multitenant Architecture
• In-Memory Column Store
• Native JSON
• SQL Pattern Matching

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1991
Oracle V6.2
1992
Oracle V7
1983
Oracle V3
1984
Oracle V4
1985
Oracle V5
1986
Oracle V5.1
1988
Oracle V6
1997
Oracle V8
1998
Oracle V8i
2001
Oracle V9i
2003
Oracle 10g
2005
Oracle 10gR2
2007
Oracle 11g
2009
Oracle 11gR2
2013
Oracle 12c
2016
Oracle 12cR2
2018
Oracle 18c
2019
Oracle 19c
• Autonomous Database
is announced
• User define sharding
• PDB Snapshot carousel
• DB In-memory support for
External tables

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1991
Oracle V6.2
1992
Oracle V7
1983
Oracle V3
1984
Oracle V4
1985
Oracle V5
1986
Oracle V5.1
1988
Oracle V6
1997
Oracle V8
1998
Oracle V8i
2001
Oracle V9i
2003
Oracle 10g
2005
Oracle 10gR2
2007
Oracle 11g
2009
Oracle 11gR2
2013
Oracle 12c
2016
Oracle 12cR2
2018
Oracle 18c
2019
Oracle 19c
• General Availability since April 2019

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History Predicts (Sometimes)
199119921983198419851986198819971998200120032005200720092013201620182019
All roads lead to the
1996 -
2000

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How to Move to the Cloud ?

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Cloud Migration Scenarios

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Oracle Database Cloud Migration Solutions

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Cloud Migration Scenarios

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Method Source Databases Target Databases
Simple Data Guard Solution
11g, 12c, 18cAdvanced Data Guard Solution
Cross Platform Migration using
ZDLRA
GoldenGate Cloud Service
Migration
11g, 12c, 18c 11g, 12c, 18c, ADW/ATP
MAA Migration Solutions
Target Cloud Service: DBCS BM/VM, ExaCS, ExaCC, ADW, ATP
Simple Data Guard Solution
- Limited Downtime
- 11.2.0.4 / 12+CDB
- Same version/platform
Advanced Data Guard Solution
- CDB Conversion if required
- DB Upgrade
- Transient Logical Rolling Upgrade
- Data Guard Switchover and Upgrade
Cross Platform Migration using ZDLRA
- Limited Downtime
- Little endian to small endian
GoldenGate Cloud Service Migration
- Multiple sources
- ATP/ADW as targets

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Method Source Databases Target Databases
Conventional Export / Import
Amazon RDS, Oracle 12c, 18c Oracle 12c, 18cCopy
Materialized Views
SQL Loader Amazon RDS, Oracle 12c, 18c Oracle 12c, 18c, ATP, ADW
SQL Developer Migration Solutions
Target Cloud Service: DBCS BM/VM, ExaCS, ExaCC, ADW, ATP
Conventional Export / Import
- Leverages Data Pump
- Platform and character set Independent
- Can be parallelized
- Up to 5TB
Copy
- Copy tool from SQLDev
- Good for small schemas with small sizes
- Wizard based
Materialized Views
- Copy of large table in target then update it by materialized
view refreshes
- Good for small databases
- Online, ZDT
SQL Loader
- External files into Oracle Database tables
- SQL Dev extracts DDL and data from source
- SQL Loader loads them into target
- Up to 10Gb

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oracle.com/goto/move
Introducing MOVE to Oracle Cloud
Migrate Over

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Oracle Zero Downtime Migration
Simple MAA Compliant Fleet Scale
Single Button Approach
Extensive Post-checks
Resumable
Rollback enabled
Dry-run option
Centralized
Scheduled Operations
Command Deck
Audit Trail
Extensive Pre-checks

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Sources Targets
Oracle Zero Downtime Migration
Same Version / Platform

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Oracle Zero Downtime Migration
42
Workflow
Analysis Migrate Monitor SwitchPrepare

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Oracle Zero Downtime Migration
43
Workflow
Analysis Migrate Monitor SwitchPrepare
• Analyzes the source Database
• Determines optimized migration steps
• User choice of backup location

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Oracle Zero Downtime Migration
44
Workflow
Analysis Migrate Monitor Switch
• Prepares migration based on configuration on source database
• Sets up secure connectivity
• Validates source & target platforms
• Prepares source & targets
Prepare

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Oracle Zero Downtime Migration
45
Workflow
Analysis Prepare Monitor Switch
• Ensures Cloud security
• Backs up to Cloud Object Store
• Starts Migration
Migrate

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Oracle Zero Downtime Migration
46
Workflow
Analysis Prepare Migrate Switch
• Command line
• Real time Migration status
• Statistics / History
Monitor

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Oracle Zero Downtime Migration
47
Workflow
Analysis Prepare Migrate Monitor
•Validates Migration
•Controlled Switchover to Target
•Data Guard syncup
•Falls back if required
Switch

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Oracle Zero Downtime Migration
49
Workflow Overview
ZDM
SSH
SSH
SQLnet
Download ZDM1
2
3
4
Connects to Source & Target
Connects to Object Store
Transfers DB Files
5 Instantiates Standby
6 Syncs Primary & Standby
7 Switches over & Role swaps
8 User finalizes at will

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Oracle Zero Downtime Migration
50
Workflow
ZDM
ZDM Connects to
Source & Target 2
SSH SSH

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Oracle Zero Downtime Migration
51
Workflow
ZDM
Connects Source
to Object Store 3
SSH
SSH
https

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Oracle Zero Downtime Migration
52
Workflow
ZDM
SSH
SSH
https
• DB Files
• Full backup
• Including incremental archives
Transfers DB
files 4

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Oracle Zero Downtime Migration
53
Workflow
ZDM
SSH
SSH
https
• Standby on target initiates with
the back up files in the Object
Store.
Instantiates
Standby 5

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Oracle Zero Downtime Migration
54
Workflow
ZDM
SSH
SSH
https
• SQLnet Connectivity is
established between source &
target
• Synchronization between
Primary and Standby starts
Synchronizes
Primary &
Standby
6
SQLnet

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Oracle Zero Downtime Migration
55
Workflow
ZDM
SSH
SSH
• Switchover
• Role swap between Primary &
Standby
Switches over &
role swaps 7
SQLnet

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Oracle Zero Downtime Migration
56
Workflow
ZDM
SSH
SSH
• ZDM keeps the standby on-
premises synchronized.
• User decides when to stop this
process in case fall back is
required
User finalizes at
will 8
SQLnet

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Oracle Zero Downtime Migration
57
Workflow Summary
ZDM
SSH
SSH
SQLnet
Download ZDM1
2
3
4
Connects to Source & Target
Connects to Object Store
Transfers DB Files
5 Instantiates Standby
6 Syncs Primary & Standby
7 Switches over & Role swaps
8 User finalizes at will

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Oracle Zero Downtime Migration
58
ZDMCLI - One command to move your Database to the Cloud
zdmcli migrate database –sourcedb <db_name> -source_node <node_name> -target_node <node_name> -target_home <target_home>

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Oracle Zero Downtime Migration
59
Roadmap
• Release in Calendar year 2019
• V2 - based on GoldenGate for ATP migration
• V2 - REST API Enablement
• V2 - UI Interface
• Ultimately – Zero Downtime Migration Service

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