# Using an Oracle Data Warehouse database as a source in DMS Schema Conversion
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You can use Oracle Data Warehouse databases as a migration source in DMS Schema Conversion to convert database code objects and application code to Amazon Redshift.

For information about supported Oracle database versions, see [Source data providers for DMS Schema Conversion](CHAP_Introduction.Sources.md#CHAP_Introduction.Sources.SchemaConversion). For more information about using DMS Schema Conversion with a source Oracle database, see the [ Oracle to PostgreSQL migration step-by-step walkthrough](https://docs.aws.amazon.com/dms/latest/sbs/schema-conversion-oracle-postgresql.html). 

## Privileges for using an Oracle Data Warehouse database as a source
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The following privileges are required for Oracle Data Warehouse as a source:
+ CONNECT
+ SELECT\_CATALOG\_ROLE
+ SELECT ANY DICTIONARY