Pradeep: It is NOT number of read request to the I/O sub-system. It is number of blocks read from the disk. Note that the physical read is not necessarily a physical read. There are chances the block could be from Memory (file system buffer cache). This happens when you have quick IO and/or a large file system buffer cache.
So, in general 'physical reads' are the number of blcoks read in to the buffer cache from the disk !! --- [EMAIL PROTECTED] wrote: > > Hi All in list, > > I have taken the report.txt using utlbstat and utlestat. Can I assume > that the physical reads value as number of physical I/Os to the disk > happened? ===== Have a nice day !! ------------------------------------------------------------ Best Regards, K Gopalakrishnan, Bangalore, INDIA. -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: K Gopalakrishnan INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
