Hi, far better than getting individual descriptions is to research for yourself (this isn't an RTFM message honestly). Good sources of information for this subject are Anjo Kolk's excellent document on wait events and enqueues (http://www.dbatoolbox.com/WP2001/dbamisc/events.pdf) and the Oracle documentation set, specifically the Oracle Server Reference (Appendix A I think), wait events.
Cheers, Mike -----Original Message----- Sent: 16 May 2002 10:33 To: Multiple recipients of list ORACLE-L Hi Can anybody explain the events like SQL*Net message from client,rdbms ipc message PX Idle Wait ,slave wait ... Can I assume a i/o bottleneck from the following statistics as most of the i/o events are having high wait time. select * from v$system_event order by TIME_WAITED; The last few entries are as follows..... EVENT TOTAL_WAITS TOTAL_TIMEOUTS TIME_WAITED AVERAGE_WAIT ---------------------------------------------------------------------------- ------- SQL*Net more data to client 888137 0 12365 0.013922402 db file parallel write 2445 0 17606 7.200818 db file scattered read 7823 0 18336 2.34385786 db file sequential read 27779 0 55490 1.99755211 control file parallel write 27194 0 70593 2.59590351 log file sync 29700 1 145295 4.89208754 log file parallel write 30511 2 146311 4.7953525 io done 35551 567 270796 7.61711344 smon timer 278 273 8404285 30231.241 pmon timer 27350 27349 8413237 307.613784 SQL*Net message from client 498526 0 17655561 35.415527 rdbms ipc message 112693 80775 33193981 294.552288 PX Idle Wait 164145 164139 33650049 205.001974 slave wait 433146 392872 40839651 94.2861091 Regards Bhulu ____________________________________________________________________________ ________________________ This email and any attached to it are confidential and intended only for the individual or entity to which it is addressed. If you are not the intended recipient, please let us know by telephoning or emailing the sender. You should also delete the email and any attachment from your systems and should not copy the email or any attachment or disclose their content to any other person or entity. The views expressed here are not necessarily those of Churchill Insurance Group plc or its affiliates or subsidiaries. Thank you. Churchill Insurance Group plc. Company Registration Number - 2280426. England. Registered Office: Churchill Court, Westmoreland Road, Bromley, Kent BR1 1DP. -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Hately Mike 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).
