Thanks, it appears that this is only well documented in the Oracle 11g documentation. I am on 10g. I assume that the unit of measure is the same in both...hundredths of a second? -----Original Message----- From: Bobak, Mark [mailto:Mark.Bobak@xxxxxxxxxxxx] Sent: Monday, August 24, 2009 7:31 AM To: Terrian, Thomas J Mr CTR DLA J6DIB; oracle-l@xxxxxxxxxxxxx Subject: RE: v$session_wait_history.wait_time You might try the manual, where this stuff is well documented. http://download.oracle.com/docs/cd/B28359_01/server.111/b28320/dynviews_ 3025.htm#REFRN30230 -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Terrian, Thomas J Mr CTR DLA J6DIB Sent: Monday, August 24, 2009 7:09 AM To: oracle-l@xxxxxxxxxxxxx Subject: v$session_wait_history.wait_time Does anyone know what the unit of measure is for v$session_wait_history.wait_time? Is this seconds, milliseconds, microseconds, other? Thanks, Tom -- //www.freelists.org/webpage/oracle-l -- //www.freelists.org/webpage/oracle-l