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Copy file name to clipboardExpand all lines: src/unify/linked-profiles/setup-guides/databricks-setup.md
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On this page, you'll learn how to connect your Databricks data warehouse to the Segment Data Graph.
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> info ""
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> At this time, you can only use Databricks with Linked Audiences.
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## Set up Databricks credentials
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Sign into Databricks with admin permissions to create new resources and provide the Data Graph with the necessary permissions.
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Segment assumes that you already have a workspace that includes the datasets you'd like to use for the Data Graph. Segment recommends setting up a new Service Principal user with only the permissions to access the required catalogs and schemas.
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### Step 1: Set up a Service Principal user and SQL Warehouse
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### Step 1: Set up a Service Principal user
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Segment recommends that you set up a new Service Principal user. If you already have a Service Principal user you'd like to use, grant it "Can use" permissions for your data warehouse and proceed to [Step 2: Create a catalog for Segment to store checkpoint tables](#step-2-create-a-catalog-for-segment-to-store-checkpoint-tables).
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## Additional set up for warehouse permissions
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#### Create a new warehouse
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1. Log into your workspace as an Admin in the Databricks UI.
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2. Navigate to SQL Warehouses and click **Create SQL Warehouse**.
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3. Enter a name for your warehouse, select a cluster size, and click **Create**.
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### Update user access for Segment Reverse ETL catalog
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Run the following SQL if you run into an error on the Segment app indicating that the user doesn’t have sufficient privileges on an existing `_segment_reverse_etl` schema.
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If Segment Reverse ETL has ever run in the catalog you are configuring as the Segment connection catalog, a Segment-managed schema is already created and you need to provide the new Segment user access to the existing schema. Update the Databricks table permissions by running the following SQL:
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