RE: how informix archive works?

Miyaki I have absolute confidence in the Informix archive. I too back up using ontape and have restored (to a test machine) on numerous occasions with no problems. Do you have some very old data in your database? It could be you are encountering the 'archive very old page' bug which slows the archive while it updates the timestamp on very old pages. Once they have been updated (and if there is no other activity on the system) they will not need to be updated if you archive again immediately after. You do not say what the normal length of time of an archive is, or is this the first archive for some days (weeks, months)? A bit more information. Keith -> -----Original Message----- -> From: miyaki [mailto:lcib@yahoo.com] -> Sent: Thursday, May 20, 2004 4:27 AM -> To: ids@iiug.org; informix-list@iiug.org -> Subject: how informix archive works? -> -> -> Hi all, -> -> I have some doubt on the informix backup. I'm using -> ontape command to perform level 0 backup on my Test -> database (7.31.UC2). The first level 0 backup took -> around 2 hours to complete and the second time of -> level 0 backup only took ~45min. The second time of -> the backup begin right after the first backup -> completed. There's no other transactions running on -> the database during the backup. Which means that the -> data for both archive is exactly identical. My -> question is why second backup take shorter duration to -> complete compare to the first backup -> -> Does any one of us know where can i obtain the -> documentation to describe how informix archive works? -> -> TIA, -> miyaki -> -> -> -> -> __________________________________ -> Do you Yahoo!? -> Yahoo! Domains - Claim yours for only $14.70/year -> http://smallbusiness.promotions.yahoo.com/offer -> sending to informix-list -> ******************************************************************************** ** This message is sent in strict confidence for the addressee only. It may contain legally privileged information. The contents are not to be disclosed to anyone other than the addressee. Unauthorised recipients are requested to preserve this confidentiality and to advise the sender immediately of any error in transmission. This footnote also confirms that this email message has been swept for the presence of computer viruses, however we cannot guarantee that this message is free from such problems. ******************************************************************************** **

Yes Miyaki, Keith is correct. Provide us more information please ! 1. Is this a one time deal or does this happen each time you perform this archive ? 2. What is the reason for you to run 2 archives one after the other ? 3. What is the time difference between the two archives ? etc. Thanks. "Simmons, Keith" <keith.simmons@office2office.biz> wrote: Miyaki I have absolute confidence in the Informix archive. I too back up using ontape and have restored (to a test machine) on numerous occasions with no problems. Do you have some very old data in your database? It could be you are encountering the 'archive very old page' bug which slows the archive while it updates the timestamp on very old pages. Once they have been updated (and if there is no other activity on the system) they will not need to be updated if you archive again immediately after. You do not say what the normal length of time of an archive is, or is this the first archive for some days (weeks, months)? A bit more information. Keith -> -----Original Message----- -> From: miyaki [mailto:lcib@yahoo.com] -> Sent: Thursday, May 20, 2004 4:27 AM -> To: ids@iiug.org; informix-list@iiug.org -> Subject: how informix archive works? -> -> -> Hi all, -> -> I have some doubt on the informix backup. I'm using -> ontape command to perform level 0 backup on my Test -> database (7.31.UC2). The first level 0 backup took -> around 2 hours to complete and the second time of -> level 0 backup only took ~45min. The second time of -> the backup begin right after the first backup -> completed. There's no other transactions running on -> the database during the backup. Which means that the -> data for both archive is exactly identical. My -> question is why second backup take shorter duration to -> complete compare to the first backup -> -> Does any one of us know where can i obtain the -> documentation to describe how informix archive works? -> -> TIA, -> miyaki -> -> -> -> -> __________________________________ -> Do you Yahoo!? -> Yahoo! Domains - Claim yours for only $14.70/year -> http://smallbusiness.promotions.yahoo.com/offer -> sending to informix-list -> ******************************************************************************** ** This message is sent in strict confidence for the addressee only. It may contain legally privileged information. The contents are not to be disclosed to anyone other than the addressee. Unauthorised recipients are requested to preserve this confidentiality and to advise the sender immediately of any error in transmission. This footnote also confirms that this email message has been swept for the presence of computer viruses, however we cannot guarantee that this message is free from such problems. ******************************************************************************** ** --------------------------------- Do you Yahoo!? Yahoo! Domains - Claim yours for only $14.70/year

Hi. Informix 7.xx realy had a bug with old pages. In given case I was adviced by techical support for a parameter CCFLAGS 0x400000 Don't use this parameter without technical support advice. Best regards, Konstantin. ----- Original Message ----- From: "Ravi T" <ravit29@yahoo.com> To: <ids@iiug.org> Sent: Thursday, May 20, 2004 5:04 PM Subject: RE: how informix archive works? [2996] > Yes Miyaki, > > Keith is correct. > > Provide us more information please ! > > 1. Is this a one time deal or does this happen each time you perform this archive ? > > 2. What is the reason for you to run 2 archives one after the other ? > > 3. What is the time difference between the two archives ? > > etc. > > Thanks. > > "Simmons, Keith" <keith.simmons@office2office.biz> wrote: > Miyaki > > I have absolute confidence in the Informix archive. I too back up using > ontape and have restored (to a test machine) on numerous occasions with no > problems. > Do you have some very old data in your database? It could be you are > encountering the 'archive very old page' bug which slows the archive while > it updates the timestamp on very old pages. Once they have been updated (and > if there is no other activity on the system) they will not need to be > updated if you archive again immediately after. > You do not say what the normal length of time of an archive is, or is this > the first archive for some days (weeks, months)? > A bit more information. > > Keith > > -> -----Original Message----- > -> From: miyaki [mailto:lcib@yahoo.com] > -> Sent: Thursday, May 20, 2004 4:27 AM > -> To: ids@iiug.org; informix-list@iiug.org > -> Subject: how informix archive works? > -> > -> > -> Hi all, > -> > -> I have some doubt on the informix backup. I'm using > -> ontape command to perform level 0 backup on my Test > -> database (7.31.UC2). The first level 0 backup took > -> around 2 hours to complete and the second time of > -> level 0 backup only took ~45min. The second time of > -> the backup begin right after the first backup > -> completed. There's no other transactions running on > -> the database during the backup. Which means that the > -> data for both archive is exactly identical. My > -> question is why second backup take shorter duration to > -> complete compare to the first backup > -> > -> Does any one of us know where can i obtain the > -> documentation to describe how informix archive works? > -> > -> TIA, > -> miyaki > -> > -> > -> > -> > -> __________________________________ > -> Do you Yahoo!? > -> Yahoo! Domains - Claim yours for only $14.70/year > -> http://smallbusiness.promotions.yahoo.com/offer > -> sending to informix-list > -> > > > **************************************************************************** ****** > This message is sent in strict confidence for the addressee only. It may > contain legally privileged information. The contents are not to be disclosed > to anyone other than the addressee. Unauthorised recipients are requested > to preserve this confidentiality and to advise the sender immediately of any > error in transmission. > This footnote also confirms that this email message has been swept for the > presence of computer viruses, however we cannot guarantee that this message > is free from such problems. > **************************************************************************** ****** > > > > --------------------------------- > Do you Yahoo!? > Yahoo! Domains - Claim yours for only $14.70/year > >