SQL Server Migration Assistant (SSMA) is a complete suite of tools that dramatically cuts the effort, cost, and risk of migrating from Oracle to SQL Server. SSMA automates almost every aspect of the migration process including assessment, schema and data migration, business logic conversion, and validation. Companies such as Motorola and Simon & Schuster have used SSMA to migrate their business-critical databases quickly, easily and accurately.
With SSMA, IT organizations now have the freedom to move to SQL Server and take advantage of SQL Server's exceptional security, scalability, developer productivity, and the industry’s lowest total cost of ownership.
SSMA is a FREE download, and is available for use by any customer or partner with no charge or any obligations. However, the product requires a license key for activation. The key can be obtained after quick and simple registration.
You can download the SSMA v2.0 Beta build from here -- this release now supports SQL Server 2005 or 2000 (the previous version only supported SQL Server 2000)