I read this node "Handling huge BLOB fields with DBI and MySQL"

I dont do anything diferent in the original code

When i upload/download to my database a word document that the code does not have to split there is no problem.   When the file has to be split up, due to its large size, after the code fetch's it from the database, it is always damaged

janitored by ybiC: Made node link active, minor format tweaks for legibility.