Migrating Oracle Databases from AWS to OCI

MIGRATING
ORACLE DATABASES
FROM AWS TO OCI
Alex
Zaballa

2
ALEX ZABALLA
CHRISTIAN, HUSBAND, FATHER, DBA, ACE DIRECTOR, WRITER AT OTN, SPEAKER AND BLOGGER.
330 – Including OPN
Born
Double
Citizenship Living
http://alexzaballa.blogspot.com/ @alexzaballa
https://www.linkedin.com/in/alexzaballa

Copyright © 2018 Accenture. All rights reserved. 3
• Based in Dallas-TX (June, 2019 - Now)
• Worked for 3 years in Brazil as a Clipper/Delphi Developer
(15 years old) 1997-1999
• Worked for 7 years in Brazil as an Oracle Developer 2000 –
2007
• Worked for 8 years in Angola - Africa as an Oracle DBA
for the Ministry of Finance. 2007 – 2015
• Worked for 4 years in Brazil as an Oracle DBA
for Accenture Enkitec Group. 2015 – 2019 (June,2019)

ACCENTURE ENKITEC GROUP
CAPABILITIES OVERVIEW
• Global systems integrator focused on the Oracle platform
• Consultants average 15+ years of Oracle experience
• Worldwide specialist in Engineered Systems implementations
• 14 Oracle ACE members, specialist recognized by Oracle for their technical expertiseELITE
Our consultants have been published in multiple subject areas and additional
online resources that demonstrate Accenture’s experience and expertise with
the OES platformTHOUGHT
LEADERSHIP
SUCCESS
EXPERTISE
ORACLE SPECIALIZATIONS*
• Oracle Exadata
• Oracle Exalogic
ORACLE ENGINEERED SYSTEMS NUMBERS
• 700+ Oracle Engineered Systems which AEG have configured, patched or supported.
• 100+ AEG resources which have an average 15+ years of Oracle experience
• AEG Support across 9 countries
• 200 Oracle Engineered Systems (Exadata/Exalogic etc) currently under management directly by AEG
• 200+ customers in either the AEG Managed Services program or remote DBA program
• 50,000 Accenture Oracle IDC resources that can be leveraged for Level 1 & Level 2 support
• Oracle Database
• Oracle GoldenGate
• Oracle Data Integrator
• Oracle Database
• Oracle Data Warehouse
• Oracle Real Application Cluster
• Oracle Performance Tuning
• Oracle Database Security

3 MEMBERSHIP TIERS
• Oracle ACE Director
• Oracle ACE
• Oracle ACE Associate
bit.ly/OracleACEProgram
oracle-ace_ww@oracle.com
Facebook.com/oracleaces
@oracleace
500+ TECHNICAL EXPERTS
HELPING PEERS GLOBALLY
CONNECT:
Nominate yourself or someone you know: acenomination.oracle.com

WHY ORACLE CLOUD?
ON PREMISES
SAME ARCHITECTURE
SAME SOFTWARE
SAME SKILLS
ORACLE CLOUD

WHY MOVE MY DATABASE TO OCI?
Licensing Oracle Software in the Cloud Computing Environment
https://www.oracle.com/assets/cloud-licensing-070579.pdf
https://www.oracle.com/cloud/economics/
CPU and Network

ORACLE RAC: “THE ORACLE CLOUD IS CURRENTLY THE ONLY CLOUD OFFERING CERTIFIED
AND SUPPORTED TO RUN ORACLE REAL APPLICATION CLUSTERS (RAC) DATABASES.”
EXADATA: “ORACLE EXADATA IS THE BEST-PERFORMING, MOST AVAILABLE, AND MOST
SECURE ARCHITECTURE FOR RUNNING ORACLE DATABASE.”

BEFORE START

Will I lose my job?

No!
But you have to learn new capabilities:
• Application (Design and Development)
• Architecture
• Infrastructure (Network, Security and IaC)

SOME TOOLS FOR INFRASTRUCTURE
AUTOMATION INFRASTRUCTURE AS
CODE
• OCI CLI
• Terraform
• Ansible

LET’S START

https://cloud.oracle.com/database
ORACLE DATABASE CLOUD
• Oracle Database Cloud Service - Virtual Machines / Bare Metal
• Oracle Database Exadata Cloud Service
• Oracle Database Exadata Cloud at Customer
• Autonomous Transaction Processing
• Autonomous Data Warehouse
• Oracle Database Exadata Express Cloud Service – Managed
• Oracle Database Schema Cloud Service - Managed

https://cloud.oracle.com/database
ORACLE DATABASE CLOUD

AUTOMATED VS AUTONOMOUS

ORACLE DATABASE CLOUD SERVICE
DETERMINE THE COMPUTE SHAPE TO
MOVE TO ORACLE CLOUD

I will use the same amount of CPUs
and memory that I have on AWS!
DETERMINE COMPUTE SHAPE

Use Database Consolidation Workbench
**Database Consolidation Workbench requires the Database Diagnostics pack license.

How to standardize ASH data for sizing
https://jorgebarbablog.wordpress.com/2016/12/21/how-to-standardize-ash-data-
for-sizing/

REGIONS, AVAILABILITY DOMAINS AND
FAULT DOMAINS
• Regions - serve different geographies – provide Disaster Recovery capability
• Availability Domains – provide a High Availability foundation within a region
• Fault Domains - a grouping of hardware and infrastructure within an availability domain a
grouping of hardware and infrastructure within an availability domain

CONNECTIVITY OPTIONS
Max (Mb/s) Cost Secure
Public internet < 10,000 Variable No
IPSec VPN < 250 Variable Yes
FastConnect < 100,000 Predictable Yes

ORACLE CLOUD

IAAS

DBAAS

MARKET PLACE

CLOUD MIGRATION ADVISOR
https://www.oracle.com/goto/move

AMAZON RDS
Copyright © 2018 Accenture. All rights reserved. 35https://oracle-base.com/articles/vm/aws-rds-for-oracle
• You do not get access to the SYS user. You only have access to a DBA user.
• Some of the operations you would typically expect to do as a DBA are restricted. Instead, you have to use
the RDSADMIN.RDSADMIN_UTIL package, which provides an API to perform these tasks.
• With a few exceptions, you do not have direct access to the file system, so if you have processes that
sFTP/SCP data to the server to be loaded, you may have to think again.
Restrictions

AMAZON EC2
“Amazon EC2 supports a self-managed Oracle database—that is, it gives you full control over the setup of the
infrastructure and the database environment. Running the database on Amazon EC2 is very similar to running
the database on your own server. You have full control of the database and operating system-level access, so
you can use your choice of tools to manage the operating system, database software, patches, data replication,
backup, and restoration. This migration option requires you to set up, configure, manage, and tune all the
components, including Amazon EC2 instances, storage volumes, scalability, networking, and security, based on
AWS architecture best practices.”
https://docs.aws.amazon.com/prescriptive-guidance/latest/migration-oracle-database/ec2-oracle.html

• SQL Developer Data Pump Export/Import
• SQL Developer Copy
• SQL Developer SQL*Loader
• SQL Developer Materialized Views
• AWS DMS
MIGRATION OPTIONS
RDS

https://docs.cloud.oracle.com/iaas/Content/Database/Tasks/migrating.htm
MIGRATION OPTIONS
EC2

Copyright © 2018 Accenture. All rights reserved. 39https://docs.cloud.oracle.com/en-us/iaas/Content/Resources/Assets/whitepapers/database-migration-aws-to-oci-database.pdf
MIGRATION OPTIONS
RDS / EC2

MIGRATION OPTIONS
EC2

TRANSFERRING DATA TO OBJECT STORAGE FROM
OTHER CLOUD PROVIDERS
AMAZON S3 AND MICROSOFT AZURE BLOB STORAGE
Copyright © 2018 Accenture. All rights reserved. 44https://docs.cloud.oracle.com/en-us/iaas/Content/Resources/Assets/whitepapers/transfer-data-to-object-storage.pdf
Rclone is an open-source command-line utility that synchronizes files and directories between a
local file system and a variety of cloud backends.

TRANSFERRING DATA TO OBJECT STORAGE FROM
OTHER CLOUD PROVIDERS
AMAZON S3
Copyright © 2018 Accenture. All rights reserved. 45https://docs.cloud.oracle.com/en-us/iaas/Content/Resources/Assets/whitepapers/transfer-data-to-object-storage.pdf
SQL> exec rdsadmin.rdsadmin_util.create_directory(p_directory_name => 'BACKUP');
SQL> exec rdsadmin.rdsadmin_util.set_configuration( name => 'archivelog retention
hours', value => '48’);
SQL> exec rdsadmin.rdsadmin_rman_util.backup_database_full ( p_owner =>
'SYS', p_directory_name => 'BACKUP', p_include_archive_logs => TRUE, p_parallel =>
4, p_section_size_mb => 100, p_rman_to_dbms_output => FALSE );
SQL> rdsadmin.rdsadmin_s3_tasks.upload_to_s3

RDS MIGRATION
SQL DEVELOPER DATA PUMP EXPORT/IMPORT

RDS MIGRATION

RDS_FILE_UTIL.LISTDIR
RDS MIGRATION

RDS MIGRATION

Options to consider:
• Command Line
• Database Link – NETWORK_LINK (EXPDP/IMPDP)
• Object Storage
RDS MIGRATION

RDS MIGRATION
SQL DEVELOPER COPY

RDS MIGRATION
SQL DEVELOPER SQL*LOADER

RDS MIGRATION

RDS MIGRATION
MIGRATE USING MATERIALIZED VIEWS

RDS MIGRATION

RDS MIGRATION
SQL DEVELOPER MATERIALIZED VIEWS
• Use this feature to create copies of source
database tables in a target database,
which are updated periodically
• This allows for zero-downtime cutovers to
the target database

RDS MIGRATION
MIGRATE USING AWS DMS

RDS MIGRATION
MIGRATE USING AWS DMS
• Provided by AWS
• This method can be performed online. It enables
zero-downtime migrations
• Use for databases up to 5 TB in size.

EC2 MIGRATION
DATA PUMP EXPORT/IMPORT
• Source version 10g and later
• Migrate from non-CDB to PDB
• Changes to database structure possible
• Upgrade to new version possible

AWS host:
mkdir /u01/app/oracle/admin/orcl/dpdump/for_cloud
sqlplus user/password
CREATE DIRECTORY dp_for_cloud AS
'/u01/app/oracle/admin/orcl/dpdump/for_cloud’;
expdp user/password SCHEMAS=fsowner DIRECTORY=dp_for_cloud
EC2 MIGRATION

Database Cloud Service compute node:
mkdir /u01/app/oracle/admin/ORCL/dpdump/from_onprem
AWS host:
scp –i private_key_file
/u01/app/oracle/admin/orcl/dpdump/for_cloud/expdat.dmp
oracle@IP_address_DBaaS_VM:/u01/app/oracle/admin/ORCL/dpdump/from_onprem
CREATE DIRECTORY dp_from_onprem AS '/u01/app/oracle/admin/ORCL/dpdump/from_onprem’;
impdp user/password SCHEMAS=fsowner DIRECTORY=dp_from_onprem
EC2 MIGRATION

Options to consider:
• Database Link
• Object Storage
impdp admin/password@ADWC1_high
directory=data_pump_dir
credential=def_cred_name
dumpfile= https://swiftobjectstorage.us-phoenix-1.oraclecloud.com/v1/adwc/adwc_user/export%u.dmp
https://docs.oracle.com/en/cloud/paas/autonomous-data-warehouse-cloud/user/load-data.html#GUID-297FE3E6-A823-4F98-AD50-959ED96E6969
EC2 MIGRATION

EC2 MIGRATION
DATA PUMP TRANSPORTABLE TABLESPACE

• Source version 8i and later (sameOS) or 10g and later cross-endian
EC2 MIGRATION

AWS host:
mkdir /u01/app/oracle/admin/orcl/dpdump/for_cloud
CREATE DIRECTORY dp_for_cloud AS '/u01/app/oracle/admin/orcl/dpdump/for_cloud';
ALTER TABLESPACE fsindex READ ONLY;
ALTER TABLESPACE fsdata READ ONLY;
expdp user/password TRANSPORT_TABLESPACES=fsdata,fsindex
TRANSPORT_FULL_CHECK=YES DIRECTORY=dp_for_cloud
EC2 MIGRATION

mkdir /u01/app/oracle/admin/ORCL/dpdump/from_onprem
AWS host:
$ scp -i private_key_file /u01/app/oracle/admin/orcl/dpdump/for_cloud/expdat.dmp
oracle@IP_address_DBaaS_VM:/u01/app/oracle/admin/ORCL/dpdump/from_onprem
$ scp -i private_key_file /u01/app/oracle/oradata/orcl/fsdata01.dbf
oracle@IP_address_DBaaS_VM:/u02/app/oracle/oradata/ORCL
$ scp -i private_key_file /u01/app/oracle/oradata/orcl/fsindex01.dbf
oracle@IP_address_DBaaS_VM:/u02/app/oracle/oradata/ORCL
ALTER TABLESPACE fsdata READ WRITE;
ALTER TABLESPACE fsindexREAD WRITE;
EC2 MIGRATION

CREATE DIRECTORY dp_from_onprem AS '/u01/app/oracle/admin/ORCL/dpdump/from_onprem';
SQL> CREATE USER fsowner PROFILE default IDENTIFIED BY fspass TEMPORARY
TABLESPACE temp ACCOUNT UNLOCK;
impdp user/password DIRECTORY=dp_from_onprem
TRANSPORT_DATAFILES='/u02/app/oracle/oradata/ORCL/fsdata01.dbf',
'/u02/app/oracle/oradata/ORCL/fsindex01.dbf’
ALTER TABLESPACE fsdata READ WRITE;
ALTER TABLESPACE fsindex READ WRITE;
EC2 MIGRATION

EC2 MIGRATION
REMOTE CLONE A PDB

EC2 MIGRATION
REMOTE CLONE A NON-CDB

EC2 MIGRATION
MIGRATE BY USING DATA GUARD

• No upgrade to new version
• Minimal downtime migration
• Source version 11.2.0.4, 12.1.0.2, 12.2.0.1, 18, 19
EC2 MIGRATION

This migration can be done in two different ways:
• Using Oracle Database Cloud Services (DBaaS)
• Using Oracle Compute (IaaS).
EC2 MIGRATION

1. Create Physical Standby
2. Prepare Client Connections (Ex: tnsnames.ora)
3. Switchover to Physical Standby
Disaster Recovery to the Oracle Cloud
http://www.oracle.com/technetwork/database/availability/dr-to-oracle-cloud-2615770.pdf
EC2 MIGRATION

EC2 MIGRATION

AWS host:
SELECT log_mode FROM v$database;
LOG_MODE
------------
NOARCHIVELOG
SHUTDOWN IMMEDIATE;
STARTUP MOUNT;
ALTER DATABASE ARCHIVELOG;
ALTER DATABASE OPEN;
ALTER DATABASE FORCE LOGGING;
EC2 MIGRATION

AWS host:
• Create standby redo logs on the primary database initially (recommended).
• Create standby redo logs using the same file size as the primary database online redo logs.
• Create one additional group more than the number of online redo log groups.
ALTER DATABASE ADD STANDBY LOGFILE (‘+REDO') SIZE XXM;
EC2 MIGRATION

Init.ora:
*.db_name='cdb1’
mkdir -p /u01/app/oracle/admin/cdb1/adump
orapwd file=/u01/app/oracle/product/12.1.0.2/db_1/dbs/orapwcdb1 password=mypass entries=10
EC2 MIGRATION

export ORACLE_SID=cdb1 sqlplus / as sysdba
STARTUP NOMOUNT PFILE='/tmp/init.ora';
rman TARGET sys/password@cdb1 AUXILIARY sys/password@cdb1_stby
DUPLICATE TARGET DATABASE FOR STANDBY
FROM ACTIVE DATABASE
DORECOVER
NOFILENAMECHECK;
EC2 MIGRATION

Prepare Client Connections (Ex: tnsnames.ora) +
Firewall ports Database Cloud Service compute node:
ALTER SYSTEM SET dg_broker_start=true;
dgmgrl sys/password@cdb1
CREATE CONFIGURATION my_config AS PRIMARY DATABASE IS cdb1 CONNECT IDENTIFIER IS cdb1;
ADD DATABASE cdb1_stby AS CONNECT IDENTIFIER IS cdb1_stby MAINTAINED AS PHYSICAL;
ENABLE CONFIGURATION;
SWITCHOVER TO cdb1_stby;
EC2 MIGRATION

EC2 MIGRATION
UNPLUG AND PLUG A PDB

EC2 MIGRATION
UNPLUG AND PLUG A NON-CDB

EC2 MIGRATION
MIGRATE BY USING GOLDENGATE

EC2 MIGRATION
MIGRATE BY USING GOLDENGATE
• Source version 8i and later
• Changes to database structure possible
• Minimal downtime migration

EC2 MIGRATION
RMAN – RESTORE / RECOVER

EC2 MIGRATION
MORE OPTIONS

MIG360
https://github.com/alexzaballa/migration360

THANK YOU
Slides will be available at www.slideshare.net

Migrating Oracle Databases from AWS to OCI

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