Oracle Migration Workbench (Release 10.1.0.2.0) ; 오라클데이타베이스로이전하기

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Agenda

Migration is….Why Migrate to Oracle?How to Migrate to OracleOracle Migration WorkbenchQ&A

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Migration is…

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Migration is

Migration is the conversion of existing

applications into a new environment and a

new architecture, preserving data and

functionality of the old application.

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Why Migrate to Oracle?

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We are seeing an increase in the demand to consolidate on Oracle

Sybase

Informix

SQL Server Competing databases are becoming obsoleteDesire to move to Linux for higher availability and better performanceDesire to reduce total cost of ownership

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Why Migrate to Oracle

Top 5 Business Drivers To Migrate To Oracle DB

1. Improved PerformanceScalability

2. Company Direction3. Consolidation4. Latest Technology5. Improved Security

Migration Technology Group SurveyJuly 2003

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10 Reasons to Choose Oracle

1. Database Market Leader2. Proven Performance3. Innovative Database

Technology4. Leading Database for

Enterprise Applications5. Linux Platform (Oracle co-

develops Red Hat Advanced Server )

1. Database Market LeaderProven PerformanceInnovative Database TechnologyLeading Database for Enterprise ApplicationsLinux Platform (Oracle co-develops Red Hat Advanced Server )

6. Open Standards for Application Development, SQL, JDBC, ODBC, XML

7. Oracle 10g Grid Real Application Clusters for Scalability

8. High Availability Solutions9. Database Security10. Data Warehousing and

Business Intelligence Features

Open Standards for Application Development, SQL, JDBC, ODBC, XMLOracle 10g Grid Real Application Clusters for ScalabilityHigh Availability SolutionsDatabase SecurityData Warehousing and Business Intelligence Features

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How to Migrate to Oracle

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Migration Factory for DB and associated custom applications

SybaseSQL Server

Informix

Applications

Migration Experts

Migration Tools

Technology Migration Factory

Methodology

Applications

Only applications written in one of the following are covered:C, C++, Java, XMLVisual Basic, PERL and other scripting languages

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Migration ProcessMigration ProcessMigration Process

• Database Migrations consists of:• Planning• Performing the Migration

• Schema Conversion• Data Conversion• Procedure Conversion• Handling special cases which

require manual intervention• Testing & validating• Taking advantage of Oracle features

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Phases of the Migration Process

DeploymentTestMigrationDetailAnalysis

High LevelAnalysis

• Cost• Risk• Time• Expertise

Challenges:

Oracle deliversToolkits that overcome these

migration challenges

Oracle deliversToolkits that overcome these

migration challenges

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Oracle Migration Workbench

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Oracle Migration WorkBench(OMWB)

Intuitive user interface, supported by migration wizardsSupports complete database migration– Schema & Data– Triggers & Stored Procedures

Customization supported prior to generationRelease 10.1.0.2

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Migration Workbench Architecture

Migration Workbench andWorkbench Plug-in

WorkbenchRepository

SourceModel

OracleModel

Source Database(Sybase, SQL Server,Informix, DB2..)

Destination Database(Oracle 7,8,8i,9i,10g)

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Migration Workbench & Plugin

Plugin Workbench

Source ModelUser Interface

Services

LoadingLoading

MappingMapping

Source Database Access

SourceModel

SourceModel

ProjectProject Oracle ModelOracle Model

GenerationGeneration

ProjectProject

DependencyManagementDependencyManagement

Data MovingData Moving

WorkbenchModel

WorkbenchModel

OracleModelOracleModel

Oracle Database Access

Services

User Interface

Workbench Repository

Source Database Oracle

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Oracle Migration WorkBenchFull support for the Oracle10g Database More efficient locking algorithmsSupport for Oracle10g IEEE binary precision data types enabling faster look-ups Enhanced regular expression support providing performance gains in PL/SQL and PRO*C code generation Significant enhancements to the Informix plug-in Full support for the migration MySQL 4.X schema including foreign key constraints Productivity enhancements to reduce overall migration times

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Oracle Migration WorkBenchMigrates a range of third-party databases to the Oracle platform.Stores information about the structure of the production databases in a repository where you can make changes. Retrieves source database information via an online capture or an off-line capture.Parses and transforms stored procedures, triggers, and views to Oracle PL/SQL and Pro*C. Provides advanced customization capabilities such as the ability to change data type mappings, and delete and rename objects.

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Oracle Migration WorkBench

Generates reports about the status of the migration. Generates the DDL scripts for the creation of the destination Oracle database. Generates SQL*Loader scripts for data movement. Allows you to select existing tablespaces in the destination Oracle database to which objects can be migrated. Displays informational, error, and warning messages about the migration in the Progress window. Resolves object name conflicts, such as conflicts with Oracle reserved words, automatically.

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Migration Steps in OMWBSource

Database

Online CaptureCapturing the Source Database

Offline Capture

Source Model

Mapping( Creating andCustomizing the Oracle Model )

Oracle Model

OnlineSchemaCreation

OfflineSchemaCreation

OnlineData

Transfer

OfflineData

TransferMigrating data from the SourceDatabase to the Oracle Database

DestinationDatabase

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Supported Database

Third-Party Database Version(s)

Microsoft SQL Server 6.5, 7.0, 2000

Microsoft Access 2.0,95,97,2000

Informix Dynamic Server 7.3, 9.1,9.2,9.3, 9.4

Sybase Adaptive Server 11, 12

MySQL 3.22, 3.23,4.X

IBM DB2/400 V4R3, V4R5

IBM DB2 UDB V6, V7.1 and V7.2 (All Beta)

ThirdThird--Party Database Version(s) Party Database Version(s)

Microsoft SQL ServerMicrosoft SQL Server 6.5, 7.0, 20006.5, 7.0, 2000

Microsoft AccessMicrosoft Access 2.0,95,97,20002.0,95,97,2000

Informix Dynamic ServerInformix Dynamic Server 7.3, 9.1,9.2,9.3, 9.47.3, 9.1,9.2,9.3, 9.4

Sybase Adaptive ServerSybase Adaptive Server 11, 1211, 12

MySQL MySQL 3.22, 3.23,4.X3.22, 3.23,4.X

IBM DB2/400IBM DB2/400 V4R3, V4R5V4R3, V4R5

IBM DB2 UDBIBM DB2 UDB V6, V7.1 and V7.2 (All Beta)V6, V7.1 and V7.2 (All Beta)

Oracle Migration Workbench Data Sheet , page 2

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Supported Object

Schema objects migrated to User objects.

N/AENUM Support

N/ARelations, link tables,app code reuse.

N/AOther Features

N/ANN/AESQL/C to Pro*CN/AN/AEmbedded SQL

NNN/AYN/AYTriggers

NNN/AYN/AYStored Procedure

YYYN/AN/AYUser Defined Types

YYYYNYPrivileges

YYYYY

Validation rulesYConstraints

YYYYNYUsers

YNN/AYN/AYGroup/Roles

YYYYYYIndexes

NYN/AYY Queries(Limited)YVIEWS

YYYYYYTABLES

IBM DB2 UDB

IBM DB2400

MySQLInformixMS Access

MS SQL Server & Sybase

FeatureSupported

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Capture

Provides a visual representation of the source database.– Oracle equivalent form– Wizard based intuitive user interface

The source model is generated from the source meta data.Information about the structure of the source databases is stored into a repository.Customizing the source model is allowed.

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Capture Modes

Online capture– Direct source capture via a JDBC connection

Offline capture– Offline source capture via scripts or tools which

generates metadata dump files.– Migration Workbench can read the source data from

the files in an offline mode.– Offers increased flexibility.

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Capture SampleSource Model(MS SQL Server 2000)

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Mapping

Maps the source model to the oracle model.During the map phase, the map wizard maps objects in the source model to their Oracle equivalents.The wizard also converts logic and security structures and populates it into a repository, creating an Oracle Model.

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Correcting Errors

Find the Source Model schema object the cause the error.Modify a property of schema object in the source model.Remap the source model

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Mapping Sample

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Customizing the Oracle Model

Modify the Properties of a Schema Object.Working with Tablespaces.– Create new tablespace– Change the default tablespace

Rename a tablespaceUsing existing tablespaces

Changing the default user password.– Change the default password, ‘oracle’ to other.

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Customizing Sample

Source Model(MS SQL Server 2000)

Oracle Model(Oracle 10g)

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Migrating the Database

Adjust the Oracle Model to the destination DatabaseMigration Orders

– Migrate tablespaces, users and tables– Migrate data– Migrate the remaining schema objects

Migration Methods– Creating the schema and transferring the data online– Creating the schema online and transferring the data offline– Creating the schema and transferring the data offline

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Migrating Sample

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Oracle Migration ArchivesOracle Migration Technology Center

– http://otn.oracle.com/tech/migration/index.htmlOracle Workbench Home

– http://otn.oracle.com/tech/migration/workbench/index.htmlWorkbench White paper

– http://otn.oracle.com/tech/migration/workbench/pdf/omwb_wp.pdfMigrate a Microsoft SQL Server Application to Oracle

– http://otn.oracle.com/tech/migration/ama/docs/ama_wp.pdfWorkbench Manuals

– http://otn.oracle.com/documentation/migration.htmlMigration Solution Directory

– http://otn.oracle.com/tech/migration/mti/index.html

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