I don't know of anyone who actually relies upon uvbackup/restore for their 
backup/restore strategy.

Other than supposedly support "online" backups and checking file integrity - I 
would see it's relatively slow speed as another reason not to utilise it. Other 
DB vendors tools tend to suffer from similar such drawbacks as well...

The only other comment I'd make is that you don't mention of your AIX rmt 
device block size was set to automatic or not. This may potentially be the 
cause of some of your issues? 

Regards,
David


-----Original Message-----
From: u2-users-boun...@listserver.u2ug.org 
[mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of Gregor Scott
Sent: Tuesday, 3 May 2011 12:13 PM
To: U2 Users List
Subject: [U2] Limitations of uvrestore

I have just finished some testing of uvbackup and uvrestore on AIX and Linux to 
see if there are areas to improve performance.
The results were interesting, and somewhat alarming - see 
http://gdoesu2.wordpress.com/2011/05/02/facts-about-uvbackup-and-uvrestore/ for 
details.

What I am interested in is:

a)      Do UV platforms other than AIX and Linux have similar issues with 
uvrestore?

b)      Does anyone use block sizes beyond 1mb for uvbackup and uvrestore?
If so, what size and what impact does it have on backup performance?

Thanks

Gregor


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