I put the text file on a remote server and set a mapping disk(such as F:) on the server lei running. Then I set the 'file name' field as f:\xxx.txt After running the activity to insert the text file to RDB, the log showed Error: ERROR: Unable to open file: f:\xxx.txt ..... But if the text file is located on the server lei running(such as d:\xxx.txt), the activity is running successfully. If the lei text connection is only allowed the file should be located on the server lei running ?