Re: Upgrading IDS version on PRI need rebuilt HDR/

It is documented in the migration guide. In certain (minor) upgrades you don't need to restore the secondaries: https://pic.dhe.ibm.com/infocenter/informix/v121/topic/com.ibm.mig.doc/ids_mig_2 60.htm Problem is... how to know when an upgrade will do a conversion. Running "onmode -b dummy" on the new version can be a start. In any case, my personal opinion (big official disclaimer here) this is a serious limitation. If you feel this is important to you, add your voice to this feature request (vote): http://www.ibm.com/developerworks/rfe/execute?use_case=viewRfe&CR_ID=33794 My ignorance tells me it shouldn't be too hard to achieve. The feature is currently classified as "under consideration". This can be a very critical issue, specially for large instances that are physically far away. I have plans to prove a theory, but never had the time to do it: 1- Freeze the primary 2- Identify the changed pages since upgrade 3- Copy the pages to secondary 4- Start it with the new version Finally, it's important to note that Informix has features to do a rolling upgrade of a cluster without unavailability. I suppose we have customers doing it, but I think it's too complex (not in terms of operator actions) for big instances. But you should investigate if that could work for you. Regards. On Thu, Feb 27, 2014 at 6:02 PM, O KHAN <theultimateboy@hotmail.com> wrote: > Thanks Art for your reply. > > Do you have any idea if this thing about recreating the HDR,RSS using > level-0 > archive is documented somewhere in the documentation. > > Also can you tell that what is the reason for this? Don't you think its a > limitation of informix cluster? > > I will be waiting for your response. > > Regards, > Omer Khan > > > > ******************************************************************************* > Forum Note: Use "Reply" to post a response in the discussion forum. > > -- Fernando Nunes Portugal http://informix-technology.blogspot.com My email works... but I don't check it frequently... --bcaec54858ca619b0b04f367d27d

Hi, The manual is somewhat vague about when a rebuild is required and that part documentation doesn't seem to have changed since at least the 11.50 version. I recall from somewhere, although I can't find a link, that an 11.70 to 12.10 upgrade on a system with HDR does not require a recovery of the secondary from a backup like 11.50 to 11.70 did. It would be fairly easy for me to test this at some point. However, did I imagine this? Ben.

You did :) On Mon, Mar 3, 2014 at 5:19 PM, BENJAMIN THOMPSON < benjamin.thompson@bskyb.com> wrote: > Hi, > > The manual is somewhat vague about when a rebuild is required and that part > documentation doesn't seem to have changed since at least the 11.50 > version. > > I recall from somewhere, although I can't find a link, that an 11.70 to > 12.10 > upgrade on a system with HDR does not require a recovery of the secondary > from > a backup like 11.50 to 11.70 did. It would be fairly easy for me to test > this > at some point. However, did I imagine this? > > Ben. > > > > ******************************************************************************* > Forum Note: Use "Reply" to post a response in the discussion forum. > > -- Fernando Nunes Portugal http://informix-technology.blogspot.com My email works... but I don't check it frequently... --001a11c2ae762d132c04f3b77896

I have voted for this feature and also asked my peers to do so as well. Because, i fully agree with you that it is serious limitation and this should be resolved ASAP. Thanks for all your help and useful discussion. Regards, Khan