Is the @OBFX001S bit what you'd use in SQL*Plus to execute the command file?

If so then this will not work - because DBI isn't SQL*Plus, and SQL*Plus has a number of addition features on the client side that will (presumably) run the command file.

If the command file is a collection of SQL statements then you have to open the file in perl and parse it so that you can execute each of the SQL statements individually.

Michael