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Migrating Oracle Databases to SQL Server (OracleToSQL)

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SQL Server Migration Assistant (SSMA) for Oracle is a comprehensive environment that helps you quickly migrate Oracle databases to SQL Server, Azure SQL Database, or Azure Synapse Analytics. By using SSMA for Oracle, you can review database objects and data, assess databases for migration, migrate database objects to SQL Server, Azure SQL Database, or Azure Synapse Analytics, and then migrate data to SQL Server, Azure SQL Database, or Azure Synapse Analytics. Note that you cannot migrate SYS and SYSTEM Oracle schemas.

Note

Try new Database Migration Assessment for Oracle extension in Azure Data Studio for Oracle to SQL pre-assessment and workload categorization. If you are in early phase of Oracle to SQL migration and would need to do a high level workload assessment , interested in sizing Azure SQL target for the Oracle workload or understand feature migration parity, try the new extension. For detailed code assessment and conversion, continue with SSMA for Oracle.

To successfully migrate objects and data from Oracle databases to SQL Server, Azure SQL Database, or Azure Synapse Analytics, use the following process:

  1. Create a new SSMA project.

    After you create the project, you can set project conversion, migration, and type mapping options. For information about project settings, see Setting Project Options (OracleToSQL). For information about how to customize data type mappings, see Mapping Oracle and SQL Server Data Types (OracleToSQL).

  2. Connect to the Oracle database server.

  3. Connect to an instance of SQL Server.

  4. Map Oracle database schemas to SQL Server database schemas.

  5. Optionally, Create assessment reports to assess database objects for conversion and estimate the conversion time.

  6. Convert Oracle database schemas into SQL Server schemas.

  7. Load the converted database objects into SQL Server.

    You can do this in one of the following ways:

    • Save a script and run it in SQL Server.

    • Synchronize the database objects.

  8. Migrate data to SQL Server.

  9. If necessary, update database applications.

See Also

Installing SSMA for Oracle (OracleToSQL)
Getting Started with SSMA for Oracle (OracleToSQL)