Sanjay, X$KFFXP is the view you're probably looking for. See this article by Luca Canali of CERN, for some ideas on how to interpret/use it: https://twiki.cern.ch/twiki/bin/viewfile/PSSGroup/HAandPerf?rev=1.4&filename=ASM_metadata_30012006.html Hope that helps, -Mark From: Sanjay Mishra <dmarc-noreply@xxxxxxxxxxxxx<mailto:dmarc-noreply@xxxxxxxxxxxxx>> Reply-To: "dmarc-noreply@xxxxxxxxxxxxx<mailto:dmarc-noreply@xxxxxxxxxxxxx>" <dmarc-noreply@xxxxxxxxxxxxx<mailto:dmarc-noreply@xxxxxxxxxxxxx>> Date: Thursday, May 15, 2014 at 2:54 PM To: oracle-l digest users <oracle-l@xxxxxxxxxxxxx<mailto:oracle-l@xxxxxxxxxxxxx>> Subject: ASM disk mapping to segment Hi Can someone shared the script to map as what Oracle Database segment is located on particular ASM Disk in the Diskgroup ? We have 5 disk out of 40 disk in a diskgroup that are reported as high IO. As same diskgroup is shared among 5 database and so need to find what are different segements at this particular disk from multiple databases. Thanks Sanjay