The Database Migration Assistant for Unicode (DMU) Tool
(Doc ID 1272374.1)
Last updated on JUNE 14, 2024
Applies to:
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and laterDatabase Migration Assistant for Unicode - Version 1.2 and later
Oracle Database - Standard Edition - Version 12.1.0.2 and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Information in this document applies to any platform.
Purpose
Provides Overview, Introduction , Features and Installation steps for DMU (Database Migration Assistant for Unicode) which is used to convert the NLS_CHARACTERSET of an existing database to AL32UTF8 or UTF8.
Scope
To customers and engineers who are interested to know about characterset migration to Unicode using DMU and it can also be used to validate data in existing AL32UTF8/UTF8 database.
Details
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In this Document
| Purpose |
| Scope |
| Details |
| 1) What is the DMU (Database Migration Assistant for Unicode) tool? |
| 2) Where to find the tool and the documentation? |
| 3) Oracle RDBMS version requirements (this is server / database side) for the DMU tool: |
| 3a) Oracle database Oracle Database 12c, Release 1(12.1.0.1) and higher |
| 3b) Oracle database 11.2.0.3 and 11.2.0.4 |
| 3c) Oracle database 11.2.0.2 and lower ( including 11gR1 and 10g) |
| 4) DMU client ( User Interface) requirements: |
| 4a) the server has Oracle 12c installed or an 12c client can be used |
| 4b) all clients/servers are Oracle Oracle Database 11g, Release 2(11.2.0.x) and lower |
| 5) Is DMU supported / how to get help? |
| 6) How to take an html export of the scan result using the "with some issues" filter: |
| 7) How long will a conversion using DMU take? |
| 8) What about Physical / Logical Standby databases? |
| 9) What is the "Install in Validation mode" option when installing the DMU repository when connecting to an UTF8 or AL32UTF8 NLS_CHARACTERSET database with the DMU tool? |
| 10) It's not possible to create the DMU diag package: |
| 11) Im currently using DMU 2.0, can I update to DMU 2.1 without starting over? |
| 12) Can I use Flashback DB while testing/migrating with DMU to go back? |
| 13) How to convert non-Unicode PDB's to Unicode PDB's? |
| 14) How to obtain DMU logs |
| 15) Is there a command line interface for DMU. |
| References |