>>>at that point, but I would expect the difference to occur at >>>257k, not 256k - and I wouldn't expect it to be such a big >>>difference. You'd think HPUX could split up the larger read >>>requests into 255k chunks a little more efficiently than that. >>>I'll check on a couple more AIX and HPUX systems and see if >>>they exhibit the same behavior too. Again, are we talking FS or Direct I/O with these cases where greater than 255KB seems to cause big problems? -- //www.freelists.org/webpage/oracle-l