Re: NOARCHIVELOG, ONLINE redolog corrupted - solved
Joe, That's true, but only if the current logs are not needed for instance or media recovery. For example if you want to open from a cold backup and you don't have the online logs you can fake recovery and then open resetlogs and it will recreate them for you: startup mount recover database until cancel -- you should get a message saying media recovery complete or not needed since everything is already in sync if it's a true cold backup alter database open resetlogs; You have to do the recover database until cancel to "fake" an incomplete recovery so you can then open with resetlogs; otherwise you'll get an error saying resetlogs isn't needed. Whenever you open with resetlogs, new logs will be created if they don't exist. In fact a trick to get a db open quicker when using resetlogs if you have a large # of online log groups and members is to drop all except the bare minimum (2 groups, 1 member each) to open the db. Then once the db is open you can add the additional members and groups. HTH, -- Anita --- Joe Testa <[EMAIL PROTECTED]> wrote: > its been at least a year since this wa sstated but i > believe i read(have > not tried it), that you could have totally erase > your redo logs(like you > had a serious failure in which all copies were lost) > and a open > restelogs would have recreated them. I think that > was explained by > someone on the list. > > Would that have helped any? > > joe > Rahul wrote: > > > > > list , (solaris, 8.1.6) > > > > > > two redolog thread, two member each, one member > from each thread on raw > > > > > > while doing import (35 million rows), the raw > member of thread 1 was not > > > available, > > > errors in alert log > > > > > > i dropped the raw member of thread 1, and > continued import.. > > > > > > lgwr crashed the instance, the ONLY member of > the thread 1, (current, > > > online) got corrupted. > > > > > > tried to re-create the controlfiles WITHOUT the > corrupted (online) , > > > cannot as > > > that thread is required for recovery > > > > > > tried recovery until change (some SCN in the > past) , recovery completed > > > BUT > > > open restlogs will return error. file > requiure more media recovery > > > to be consistent. > > > > > > tried media recovery again error... unable > to read block nnn ..unix IO > > > error > > > > > > set _allow_resetlogs_corruption = true > > > > > > ABLE TO OPEN THE DB (with errors in alert log) > switched the log, dropped > > > the corrupted one.. > > > > > > the _allow_reset parameter was the last > resort... was their anything else > > > i could have tried ? > > > > > > regards > > > Rahul > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > -- > > Please see the official ORACLE-L FAQ: > http://www.orafaq.com > > -- > > Author: Rahul > > 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) > > -- > Joe Testa > Performing Remote DBA Services, need some backup DBA > support? > For Sale: Oracle-dba.com domain, its not going cheap > but feel free to > ask :) > -- > Please see the official ORACLE-L FAQ: > http://www.orafaq.com > -- > Author: Joe Testa > 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). __ Do You Yahoo!? Make international calls for as low as $.04/minute with Yahoo! Messenger http://phonecard.yahoo.com/ -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: A. Bardeen 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-
Re: NOARCHIVELOG, ONLINE redolog corrupted - solved
Joe , I think you are thinking about ALTER DATABASE CLEAR LOGFILE ; command . There is some catch to it . The execrpt from OManual " Do not use CLEAR LOGFILE to clear a log needed for media recovery. If it is necessary to clear a log containing redo after the database checkpoint, you must first perform incomplete media recovery. The current redo log of an open thread can be cleared. The current log of a closed thread can be cleared by switching logs in the closed thread. " Cheers, RS --- Joe Testa <[EMAIL PROTECTED]> wrote: > its been at least a year since this wa sstated but i > believe i read(have > not tried it), that you could have totally erase > your redo logs(like you > had a serious failure in which all copies were lost) > and a open > restelogs would have recreated them. I think that > was explained by > someone on the list. > > Would that have helped any? > > joe > Rahul wrote: > > > > > list , (solaris, 8.1.6) > > > > > > two redolog thread, two member each, one member > from each thread on raw > > > > > > while doing import (35 million rows), the raw > member of thread 1 was not > > > available, > > > errors in alert log > > > > > > i dropped the raw member of thread 1, and > continued import.. > > > > > > lgwr crashed the instance, the ONLY member of > the thread 1, (current, > > > online) got corrupted. > > > > > > tried to re-create the controlfiles WITHOUT the > corrupted (online) , > > > cannot as > > > that thread is required for recovery > > > > > > tried recovery until change (some SCN in the > past) , recovery completed > > > BUT > > > open restlogs will return error. file > requiure more media recovery > > > to be consistent. > > > > > > tried media recovery again error... unable > to read block nnn ..unix IO > > > error > > > > > > set _allow_resetlogs_corruption = true > > > > > > ABLE TO OPEN THE DB (with errors in alert log) > switched the log, dropped > > > the corrupted one.. > > > > > > the _allow_reset parameter was the last > resort... was their anything else > > > i could have tried ? > > > > > > regards > > > Rahul > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > -- > > Please see the official ORACLE-L FAQ: > http://www.orafaq.com > > -- > > Author: Rahul > > 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) > > -- > Joe Testa > Performing Remote DBA Services, need some backup DBA > support? > For Sale: Oracle-dba.com domain, its not going cheap > but feel free to > ask :) > -- > Please see the official ORACLE-L FAQ: > http://www.orafaq.com > -- > Author: Joe Testa > 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). __ Do You Yahoo!? Make international calls for as low as $.04/minute with Yahoo! Messenger http://phonecard.yahoo.com/ -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Sakthi , Raj 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).
Re: NOARCHIVELOG, ONLINE redolog corrupted - solved
its been at least a year since this wa sstated but i believe i read(have not tried it), that you could have totally erase your redo logs(like you had a serious failure in which all copies were lost) and a open restelogs would have recreated them. I think that was explained by someone on the list. Would that have helped any? joe Rahul wrote: > > > list , (solaris, 8.1.6) > > > > two redolog thread, two member each, one member from each thread on raw > > > > while doing import (35 million rows), the raw member of thread 1 was not > > available, > > errors in alert log > > > > i dropped the raw member of thread 1, and continued import.. > > > > lgwr crashed the instance, the ONLY member of the thread 1, (current, > > online) got corrupted. > > > > tried to re-create the controlfiles WITHOUT the corrupted (online) , > > cannot as > > that thread is required for recovery > > > > tried recovery until change (some SCN in the past) , recovery completed > > BUT > > open restlogs will return error. file requiure more media recovery > > to be consistent. > > > > tried media recovery again error... unable to read block nnn ..unix IO > > error > > > > set _allow_resetlogs_corruption = true > > > > ABLE TO OPEN THE DB (with errors in alert log) switched the log, dropped > > the corrupted one.. > > > > the _allow_reset parameter was the last resort... was their anything else > > i could have tried ? > > > > regards > > Rahul > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.com > -- > Author: Rahul > 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) -- Joe Testa Performing Remote DBA Services, need some backup DBA support? For Sale: Oracle-dba.com domain, its not going cheap but feel free to ask :) -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Joe Testa 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).
NOARCHIVELOG, ONLINE redolog corrupted - solved
> list , (solaris, 8.1.6) > > two redolog thread, two member each, one member from each thread on raw > > while doing import (35 million rows), the raw member of thread 1 was not > available, > errors in alert log > > i dropped the raw member of thread 1, and continued import.. > > lgwr crashed the instance, the ONLY member of the thread 1, (current, > online) got corrupted. > > tried to re-create the controlfiles WITHOUT the corrupted (online) , > cannot as > that thread is required for recovery > > tried recovery until change (some SCN in the past) , recovery completed > BUT > open restlogs will return error. file requiure more media recovery > to be consistent. > > tried media recovery again error... unable to read block nnn ..unix IO > error > > set _allow_resetlogs_corruption = true > > ABLE TO OPEN THE DB (with errors in alert log) switched the log, dropped > the corrupted one.. > > the _allow_reset parameter was the last resort... was their anything else > i could have tried ? > > regards > Rahul > > > > > > > > > > > > > > > > -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Rahul 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).
