If you have access to metalink, you may download the asmiostat.sh Doc ID: 437996.1 ASMIOSTAT Script to collect iostats for ASM disks Below is the sample output: *DiskPath - DiskName Gr Dsk Reads Writes AvRdTm AvWrTm KBRd KBWr AvRdSz AvWrSz RdEr WrEr */dev/asmdisk14 - DATA_0000 2 0 0 4 0.0 5.0 0 16 0 4096 0 0 /dev/asmdisk4 - DATA_0001 2 1 10 0 17.0 0.0 0 0 0 0 0 0 /dev/asmdisk17 - DATA_0002 2 2 0 1 0.0 0.0 0 0 0 512 0 0 /dev/asmdisk5 - DATA_0003 2 3 0 0 0.0 0.0 0 0 0 0 0 0 /dev/asmdisk16 - DATA_0004 2 4 3 3 6.7 3.3 0 0 0 0 0 0 /dev/asmdisk23 - DATA_0005 2 5 0 0 0.0 0.0 0 0 0 0 0 0 - Karl Arao http://karlarao.wordpress.com On Sat, Apr 18, 2009 at 4:01 PM, Orlando L <oralrnr@xxxxxxxxx> wrote: > Hi > > How do I monitor I/O with ASM. I need ways to find out IO to the devices, > any bottle neck device, the read/write rates etc > > Orlando. >