I was talking to an Oracle guru about the Oracle Parallel processes, and he was advocating to have 4-10 (based on degree of PARALLEL) datafiles for each tablespace, so when any one write or query to a object belong to that tablespace, it will write/read access simultaneously 4-10 datafiles as parallel processes.

Now, I am looking for any oracle documentation to verify his statement. He could not guide me to any doc, and saying it is from his experience. Does any one in this forum have any clue about this?

Thanks in advance,