You can also enable a 2nd CDC capture based on the new columns, then drop the previous CDC capture. The steps are covered in the SQL BOL under CDC...

This is not a CDC specific message. The "AppDomain 347 ( <any managed code assembly) unloaded." indicates your system was under memory pressure and the managed code assembly was...

What error message do you get if you try to manually add a row to the CDC tracking tables? Are you providing values for the CDC hidden system columns?

--Chris...

You may want to keep the CDC table on its own filegroup. This way you can decide if/when to backup the historical CDC table independent from your user tables.

If...

You need to save th @to_lsn and use that as the new @from_lsn the next time you call the functions. This moves up the bottom water mark to automatically...

You can also "roll your own" two way Transactional Replication. Just setup up each SQL server as its own Publisher/Distributor and the other SQL Server as the Subscriber. ...