Re: Re: 9i-OCP Question
i didnt ask the question. I was responding. what is up with the attitude? From: Mladen Gogala [EMAIL PROTECTED] Date: 2003/07/30 Wed PM 02:04:57 EDT To: Multiple recipients of list ORACLE-L [EMAIL PROTECTED] Subject: Re: 9i-OCP Question So, what do you need us for? On 2003.07.30 13:29, [EMAIL PROTECTED] wrote: according to the 8i osborne ocp book, the answer is 2. From: Senthil Kumar [EMAIL PROTECTED] Date: 2003/07/30 Wed PM 01:19:31 EDT To: Multiple recipients of list ORACLE-L [EMAIL PROTECTED] Subject: 9i-OCP Question Hi all, What is the correct answer for this? Q If you have 2 redo log groups with 4 members each, how many disks does Oracle recommend to keep the redo log files? 1. 8 2. 2 3. 1 4. 4 Which is the correct answer. TIA Senthil -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Senthil Kumar INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - 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.net -- Author: [EMAIL PROTECTED] INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - 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). -- Mladen Gogala Oracle DBA -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Mladen Gogala INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - 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.net -- Author: [EMAIL PROTECTED] INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - 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: RE: 9i-OCP Question
dont know from experience, since I dont handle backups and redo, but according to the books, you are multiplexing your redo log groups. so if one of the files gets corrupted, etc... you have exact duplicates on different storage devices. So if you put all the members on the same storage device and you move onto the the next redo log group and then that storage device goes bad, you lose all the redo. now lets say you are in archive log mode and your archive log hasnt kept up... and was still archiving data. you cant recover from that point in time. please correct me if Im wrong. Im half responding to make sure I understand it correctly. From: Pardee, Roy E [EMAIL PROTECTED] Date: 2003/07/30 Wed PM 03:14:30 EDT To: Multiple recipients of list ORACLE-L [EMAIL PROTECTED] Subject: RE: 9i-OCP Question I thought you need to preserve the groups, not (necessarily) the members. If you have each group on its own disk then if one disk goes, you've got a complete set of logs on the other. Or am I not thinking about this correctly? Cheers, -Roy Roy Pardee Programmer/Analyst/DBA SWFPAC Lockheed Martin IT Extension 8487 -Original Message- Sent: Wednesday, July 30, 2003 11:10 AM To: Multiple recipients of list ORACLE-L Answe is 4 disks . to keep each member on different disks . -ak - Original Message - To: Multiple recipients of list ORACLE-L [EMAIL PROTECTED] Sent: Wednesday, July 30, 2003 10:19 AM Hi all, What is the correct answer for this? Q If you have 2 redo log groups with 4 members each, how many disks does Oracle recommend to keep the redo log files? 1. 8 2. 2 3. 1 4. 4 Which is the correct answer. TIA Senthil -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Senthil Kumar INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - 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.net -- Author: AK INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - 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.net -- Author: Pardee, Roy E INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - 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.net -- Author: [EMAIL PROTECTED] INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - 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: Re: 9i-OCP Question
yeah that might be the right answer, but you would get it wrong on the OCP... assuming the books are right. From: Peter Gram [EMAIL PROTECTED] Date: 2003/07/30 Wed PM 04:09:28 EDT To: Multiple recipients of list ORACLE-L [EMAIL PROTECTED] Subject: Re: 9i-OCP Question Hi I don't want to create a fight, but in a configuration with 2 groups and 4 members you need 8 disks : 1 disk for every member. When the db is writing to one group the archiver will be reading from the other group, by the why since there are multibe members in the group the db (archiver) will read 64 Kb chunks from the each member and there by distribute the IO That's my 2 cent's of knowledge, comment and correction are welcome :-) Mladen Gogala wrote: There are two reasons: 1) Redo log groups are never used simultaneously, so they can reside on the same disk. Log members should not be on the same disks for increased survivability. That gives us 2 groups with 4 members, each two members sharing the same device - 4 disks alltogether. 2) It's because I say so and I'm an 8i OCP. On 2003.07.30 13:44, KENNETH JANUSZ wrote: Why? What is the logic? Ken Janusz, CPIM - Original Message - To: Multiple recipients of list ORACLE-L [EMAIL PROTECTED] Sent: Wednesday, July 30, 2003 12:29 PM The answer is 4. Of course, no one in the right mind would have 2 groups with 4 members each. On 2003.07.30 13:19, Senthil Kumar wrote: Hi all, What is the correct answer for this? Q If you have 2 redo log groups with 4 members each, how many disks does Oracle recommend to keep the redo log files? 1. 8 2. 2 3. 1 4. 4 Which is the correct answer. TIA Senthil -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Senthil Kumar INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - 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). -- Mladen Gogala Oracle DBA -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Mladen Gogala INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - 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.net -- Author: KENNETH JANUSZ INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - 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). -- Peter Gram, Miracle A/S Phone : +45 2527 7107, Fax : +45 4466 8856, Home +45 3874 5696 mail : [EMAIL PROTECTED] - http://MiracleAS.dk -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Peter Gram INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - 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.net -- Author: [EMAIL PROTECTED] INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list
