I imagine it would depend on the application. Some people are stuck working on 24x7 databases, others are lucky enough to have a life.
:>) --Walt Weaver Bozeman, Montana -----Original Message----- Sent: Wednesday, July 24, 2002 10:44 AM To: Multiple recipients of list ORACLE-L Shut the database DOWN for 1.25 hours? Who in the heck can afford THAT! You are *way* off base my friend. If I suggested to my client that they need to shut the database down because of a time change, they would send me out on a rail - and I would deserve it. Bad idea. Tom Mercadante Oracle Certified Professional -----Original Message----- Sent: Wednesday, July 24, 2002 12:08 PM To: Multiple recipients of list ORACLE-L I think that you will understand it better if you consider 2 scenario's: 1) RMAN backup from time 13:00 is newer then the backup taken at 13:45. 2) You get Enron accounting when the feds discover that invoice number 123 was issued after invoice 124. There are a lot of things, application and / or system, that can go wrong in this situation. To be on the safe side shut the database down for 1.25 hours. Yechiel Adar Mehish ----- Original Message ----- To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]> Sent: Wednesday, July 24, 2002 3:38 PM > yes , but time based incomplete recovery could create problems if he doesnt > take a full > backup after the os-time-change . > > -----Original Message----- > Sent: Wednesday, July 24, 2002 6:39 PM > To: Multiple recipients of list ORACLE-L > > > Oracle has no concept wrt. the date & time of Operating System for running > individually as a product. It just takes the timestamp in certain DML's > while updating and inserting the rows having DATE as datatype. Nothing more > than this..... > > Oracle works on the mechanism of SCN ie. System Change Number which gets > monotonically incremented one by one after every commit takes place. It has > nothing to do wrt. the OS time. > > When the Oracle engine gets started the control file reads the location of > datafiles and redo logs and the latest SCN is read and compared with those > present in datafiles aand redo logs. If the SCN is not matched menas the > database was abnormally shut down and need thread recovery. > > Smon does this task independently and roll forwards the txn's which were > left in the buffer cache and were not pushed back to d.files during > checkpoint process. These txn's were committed at the user end. > > Now the ones which were not committed would be rolled back internally by > Oracle b'ground process SMON or Server Process initiated by user process and > would rollback the blocks who soever touches them first. > > A little bit of ARCHITECTURE OF ORACLE .............. Bye for now. > > No problems at the time lagging behind or time forwarding of the OS > > -----Original Message----- > Sent: Wednesday, July 24, 2002 6:00 PM > To: Multiple recipients of list ORACLE-L > > > Oracle will continue to work fine (as it uses SCN numbers for consistency > and transaction logging rather than dates). However, if you have any apps > which use timestamps in the data, then I'd do some more investigation for > the ramnifications on the application logic side... > > -----Original Message----- > Sent: Wednesday, July 24, 2002 7:13 AM > To: Multiple recipients of list ORACLE-L > > > If you can take the database down for 1.25 hours. > I will hesitate to startup the database with time > less then last closing time. > > Yechiel Adar > Mehish > ----- Original Message ----- > To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]> > Sent: Monday, July 22, 2002 8:33 PM > > > > Hi Guys, > > > > I need to put one hour back for my OS(aix) So How will my database(7.3) > > handle this?? What steps I have to take?? Any light regarding that?? > > > > Thanks in advance > > peter. > > > > > > > > > > _________________________________________________________________ > > Chat with friends online, try MSN Messenger: http://messenger.msn.com > > > > -- > > Please see the official ORACLE-L FAQ: http://www.orafaq.com > > -- > > Author: Peter R > > 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). > > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.com > -- > Author: Yechiel Adar > 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). > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.com > -- > Author: Glenn Travis > 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). > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.com > -- > Author: Vikas Khanna > 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). > > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.com > -- > Author: Ratnesh Kumar Singh > 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). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Yechiel Adar 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). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Mercadante, Thomas F 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). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Weaver, Walt 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).
