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ZDM / DMS Comparison

This article shows a detailed feature comparison between Zero Downtime Migration (ZDM) and OCI Database Migration (DMS).
Please always check the latest documentation updates for any changes.

General Overview

General overview and high level feature comparison between the 2 migration tools.

Zero Downtime Migration (ZDM)

  • User managed software (Installation, Patching, Job Management, ...)
  • Physical offline and online migrations
  • Logical offline and online migrations
  • No graphical user interface
  • Cloud Premigration Advisor Tool (CPAT) integration
  • Supports for On-Premises Targets (Exadata Cloud@Customer, Exadata On-Premises)
  • Fleet Migrations
  • Customizing migration jobs (User Action Scripts)
  • Free 1

OCI Database Migration (DMS)

  • Fully managed cloud service based on ZDM
  • Logical offline and online migrations
  • Graphical guidance
  • Integrated GoldenGate
  • MySQL migration support
  • Cloud Premigration Advisor Tool (CPAT) integration - Interactive CPAT Report
  • Free 2

Migration Methods

Overview of the different supported migration methods:

Migration MethodZDMDMS
Physical Offline (RMAN)
Physical Online (RMAN + Data Guard)
Logical Offline (Data Pump)
Logical Online (Data Pump + GoldenGate)

Supported Source DB Versions

Overview of the supported source database versions:

Source DB VersionZDMDMS
21c
19c
18c
12.2
12.1
11.2.0.4
< 11.2.0.4

Supported Source Platforms

Overview of the supported source platforms:

Source PlatformZDMDMS
Linux x86
Solaris Sparc
AIX Power
Windows
AWS RDS Oracle Database

Supported Target Platforms

Overview of the supported target platforms:

Target PlatformZDMDMS
Autonomous DB Serverless
Autonomous DB Dedicated
Base Database Service (DBCS)
Exadata Cloud Service
Exadata Cloud@Customer
Exadata On-Premises
Other On-Premises

Supported Data Transfer for Logical Migration

Overview of the different supported data transfer methods for logical migration:

Data Transfer MethodZDMDMS
Object Storage
Database Link
Amazon S3
(Only AWS Migrations)
NFS File Storage
Copy / RSYNC
(Not for Autonomous)

CPAT Integration

Overview of the Cloud Premigration Advisor Tool (CPAT) integration:

CPATZDMDMS
Integration
Gather Target Properties
FixUp Scripts
Graphical Report

  1. Not included: Any infrastructure costs used for the migration like compute instance, database service or object storage.
    GoldenGate Marketplace Image is free for a period of 183 days.
  2. Free for 183 days for migrations running not more than 60 days idle (no transferred data).
    Not included: Any infrastructure costs used for the migration like compute instance, database service or object storage.
    GoldenGate Marketplace Image is free for a period of 183 days.