Q. Why have I got a large file called SQL.LOG that I can't delete?
問：為什么多了一個大文件SQL.LOG，并且不能刪除

A. This is the default name for the ODBC trace file - it defaults to the root of the C drive but can be moved or renamed.
答：這是ODBC的跟蹤文件，默認在C盤的根目錄下，并且不能移動和改名

Go to control panel/odbc (called data access components on W2K or latest MDAC's). Check the tracing option here and turn it off. You should then be able to delete the file.
打開控制面板/ODBC，檢查跟蹤（Trace）選項，并把它關閉，這時應該可以刪除這個文件了。