As with most things in the computer world, it depends. If you SQL is fairly simple (Such as selec tfield 1 from table1) you might be OK. However, T-SQL and the flavor of SQL used by Oracle do often have differing syntax, you'll just have to check every query and see. The O'Reilly book, SQL in a Nutshell by Kebin and Daniel Kline does show the differences in how both handle the SQL for various tasks.