Try/Catch and Transactions

Try/Catch-blocks and Transaction-Blocks really don’t play nice together. Within nests for example an outer @@ROLLBACK TRANSACTION will rollback both inner and outer transaction-blocks regardless of already executed COMMIT TRANSACTION statements.

This is the most robust template I could come up with for nested Try/Catch-blocks that contain Transactions.

BEGIN TRY
BEGIN TRY
(inner DDL statements)
begin transaction
(inner DML statements)
commit transaction
END TRY

BEGIN CATCH
(inner error capture statements)
rollback transaction
END CATCH
(outer DDL statements)
begin transaction
(outer DML statements)
while @@trancount > 0 commit transaction
END TRY

BEGIN CATCH
(outer error capture statements)
while @@trancount > 0 rollback transaction
END CATCH

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s