Question

I write app in c#. I use temporary tables inside transaction. My server is sql 2005. Is there any performance threat, I read somewhere that using temporary tables inside transactions should be avoided ( http://www.sql-server-performance.com/tips/temp_table_tuning_p1.aspx post at the bottom of the screen added at 2-24-2003 ).

Answer 1

This is quite easy to test.

In one Query window run the following

BEGIN TRAN

CREATE TABLE #T1(I INT)
INSERT INTO #T1 VALUES (1)

Then in another Query Window run the same. You will find that there is no blocking.

So the claim in that tip that

it would prevent others from executing
the same query, greatly hurting
concurrency and performance. In
effect, this turns your application
into a single-user application.

seems untrue.