Hi Arun Yes, that is right, we will archive all previous versions of released catalogs. The problem arises if we are forced to make database software upgrade in-between data releases. (for example because of security issues, it is guaranteed we will not be able to postpone such things 11+ months until the next release).
Thanks, Jacek > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Arun Jagatheesan > Sent: Thursday, October 26, 2006 2:35 PM > To: 'LSST Data Management' > Subject: RE: [LSST-data] full db backup before db software upgrade? > > Hi Jacek, > These are problems of technology migration. I thought we > discussed this before on this direction without the right "jargon". > > My understanding is that we will be having a backup of > previous versions on the archival system. I don't have the > notes to see if we also decided to backup or archive the > "un-released" or "the-latest-n-greatest" db also. I think we > add this to our archival list, our technology migration > strategy should be fine. This might change the numbers (for > media and associated > cost) by a very little. > > Another very concerned (paranoid) action item is to also > archive the software and configuration files that were used > to manage the database. > > > Cheers, > Arun > > --------- > PS: This mail was sent (typed offline) during my travel and > might not be in sync with any latest developments or replies > you might have sent to me or on any related mailing list. > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of Jacek Becla > > Sent: Monday, October 23, 2006 3:23 PM > > To: LSST Data Management > > Subject: [LSST-data] full db backup before db software upgrade? > > > > Keywords: DataAccWG > > > > Hello, > > > > I met with CERN Oracle DBAs today. One important point they > made was > > about making a full backup of database before database software > > upgrade. They had a case where (a minor) Oracle upgrade caused data > > corruption due to a bug in the Oracle version they upgraded > to. They > > are planning to keep such backups for a long time, since often this > > sort of problems is discovered weeks or even months after > the upgrade > > (3 months in their case). > > Clearly we need to think about a strategy to deal with this sort of > > problems. > > > > Jacek > > _______________________________________________ > > LSST-data mailing list > > [email protected] > > http://www.lsstmail.org/mailman/listinfo/lsst-data > > > > _______________________________________________ > LSST-data mailing list > [email protected] > http://www.lsstmail.org/mailman/listinfo/lsst-data > _______________________________________________ LSST-data mailing list [email protected] http://www.lsstmail.org/mailman/listinfo/lsst-data
