Hello Seema, Look in V$SQLAREA for SQL statements with a high number of DISK_READS. = Examine the execution plans for these statements and consider whether they can be tuned to reduce the number of block gets. @ Regards, @ Steve Adams @ http://www.ixora.com.au/ - For DBAs @ http://www.christianity.net.au/ - For all=20 -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx = [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Seema Singh Sent: Wednesday, 15 September 2004 1:54 AM To: oracle-l@xxxxxxxxxxxxx Subject: IO I have been experiencing high IO on solaris 5.7 box. All the database files are on one disk due to disk constraints? Any idea how to reduce I/O rate? -- //www.freelists.org/webpage/oracle-l