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Applies to: 
SQL Server
Azure SQL Database
Azure SQL Managed Instance
Returns one row for each database that has change tracking enabled.
| Column name | Data type | Description |
|---|---|---|
| database_id | int | ID of the database. This is unique within the instance of SQL Server. |
| is_auto_cleanup_on | bit | Indicates whether change tracking data is automatically cleaned up after the configured retention period: 0 = Off 1 = On |
| retention_period | int | If autocleanup is being used, the retention period specifies how long the change tracking data is kept in the database. |
| retention_period_units_desc | nvarchar(60) | Specifies the description of the retention period: Minutes Hours Days |
| retention_period_units | tinyint | Unit of time for the retention period: 1 = Minutes 2 = Hours 3 = Days |
Permissions
The same permission checks are made for sys.change_tracking_databases as are made for sys.databases. If the caller of sys.change_tracking_databases is not the owner of the database, the minimum permissions that are required to see the corresponding row are ALTER ANY DATABASE or VIEW ANY DATABASE server-level permission, or CREATE DATABASE permission in the master database or current database.
See Also
Change Tracking Catalog Views (Transact-SQL)
Track Data Changes (SQL Server)