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

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 (AT) yahoo (DOT) com]
-> Sent: Thursday, May 20, 2004 4:27 AM
-> To: ids (AT) iiug (DOT) org; informix-list (AT) iiug (DOT) 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.
************************************************** ********************************

sending to informix-list