Which Databases and Tables Did You CDC-Enable?

Like This Blog 0

Added by Peter Avila December 16, 2013

In the 10777 course on data warehouses, we see how to use an SQL Server technology called Change Data Capture. We see how CDC allows data changes made to a line-of-business database to be captured so that we can incrementally update a data warehouse by applying those captured changes to it. We also learn that, before CDC can be used, both the database and the individual tables where changes need to be tracked must be CDC-enabled.

And all that works very well. But, once CDC has been enabled, how do you find out what databases and tables are CDC-enabled? Simple. There are two system views we can use, sys.databases and sys.tables. Each of these views has a column that indicates whether or not a row in the view is CDC-enabled, though their names are not the same; one is called is_cdc_enabled and the other is is_tracked_by_cdc.

Use this query to find databases that are CDC-enabled:

     SELECT name
     FROM sys.databases
     WHERE  is_tracked_by_cdc =  1
     Go

Use this query to find tables that are CDC-enabled:

     USE –<a CDC-enabled database>
     Go

    SELECT name
    FROM sys.tables
    WHERE is_tracked_by_cdc =  1
    Go

Enjoy!
Peter Avila
SQL Server Instructor – Interface Technical Training
Phoenix, AZ