I've been trying to track down the source of high 'direct path read' and 'direct path write' waits. It appears the waits are related to locally managed temporary tablespaces. However, I'm puzzled by what is reported in v$tempstat.
SQL> select FILE#, READTIM, WRITETIM, AVGIOTIM, LSTIOTIM, MINIOTIM, MAXIORTM, MAXIOWTM from v$tempstat; FILE# READTIM WRITETIM AVGIOTIM LSTIOTIM MINIOTIM MAXIORTM MAXIOWTM ----- ------- -------- -------- -------- ---------- ---------- ---------- 1 3 0 0 1 0 6393 78 2 2 252 443 636 0 1387 188 How could the values for MAXIORTM (maximum time spent doing a single read) be substatially greater than those reported for READTIM (time spent doing all reads)? This situtation persists even after all of the users have logged out of the database, so it doesn't appear to be a case of the read having not yet completed. FYI: We're running Oracle 8.1.6.3 on Sun Solaris. -Ed __________________________________________________ Do You Yahoo!? Make a great connection at Yahoo! Personals. http://personals.yahoo.com -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Ed Bittel INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- 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).