>>>I check my data and found it is actually 102 GB in 66 >>>minutes for a rate of 26 MB/sec for a full table scan. >>>"Sequential reads" are much slower, around 8-10 MB/sec. >>> You should not be scanning data with db file sequential read though. Is PQO broken on your setup? In my experience, having a single forground process suck up 26MB/s is pretty good considering the size of I/O requests those are. I'd work this out until you get direct path reads and also ensure your multiblock read count is set so that the direct path reads will be a minimum of 1MB. >>> 2 HBA per SAN. I think 1Gb, but not sure >>> Veritas file system uh, quickIO or ODM? or just normal ? -- //www.freelists.org/webpage/oracle-l