onbar and Netbackup

Hi, i'm now using NetBackup, STK 9730 tape array and onbar to backup our database, but i encounter a problem that: How can i tell onbar which backup to be restored from STK tape array, by "onbar -r -t" option? or NetBackup can tell us? Thanks! Chen

OnBar will rely on the sysutils bar_* tables or $INFORMIXDIR/etc/ixbar.0 (assuming instance 0) to decide which backup versions are required, depending on whether it is a cold or warm restore (I think). Each dbspace backup and log backup is assigned a unique 'copyid' which is passed to the Storage Manager (SM) -- NetBackup in your case. The SM is responsible for identifying which tape contains that copyid and passing the data back to OnBar. One way to force OnBar to restore to current data from a previous (not the latest) backup is to edit ixbar.0 and remove the latest dbspace backup records. You should then see NetBackup call for the next-to-latest versions of the backups. OnBar will apply them and then apply all logs since that backup. Works pretty nicely for me (using OnBar with ADSM). It is just kinda 'automagical'. Hope that helps, Doug "Chen Xiaofeng" <xfchen@public.bta.net.cn> wrote in message news:88u514$69q$1@info.bta.net.cn... > Hi, > i'm now using NetBackup, STK 9730 tape array and onbar to backup our > database, but i encounter a problem that: How can i tell onbar which backup > to be restored from STK tape array, by "onbar -r -t" option? > or NetBackup can tell us? > > Thanks! > Chen > >