Dear Lynn et al. to summarise, unless stated differently in the respective release notes, MonetDB supports database upgrades from an older to a newer version in the following cases: - from a feature release or bugfix release to a newer bugfix release of the same feature release, e.g., from the Jul2015 feature release to its second bugfix release Jul2015-SP2; - from a feature release or bugfix release to the next feature release or one of its bugfix releases, e.g., from the Jul2015-SP3 bugfix release to the Jun2016 feature release or its Jun2016-SP2 bugfix release (as in your case). We strong recommend, though, to backup your data/database(s) (i.e., dbfarm) before any upgrade. We never support downgrades from a newer to any older version of MonetDB. Feature releases are identified by a release name without "-SPx" (SP as in service pack) suffix, while the release name of bugfix releases has such suffix. Hence, between the Jul 2015-SP3 bugfix release and the Jun2016-SP2 bugfix release was the Jun2016 feature release. And: "upgrading databases" refers to continuing using the same dbfarm (exclusively) with a newer version of MonetDB. I hope, this helps to clarify. Best, Stefan On October 17, 2016 12:00:24 AM GMT+02:00, Lynn Carol Johnson <lcj34@cornell.edu> wrote:
I”m confused now. Our db has already been upgraded. We went directly from Jul2015-Sp3 to Jun2016-SP2. Was there a feature release in-between these 2? Am I ok using the same dbfarm for both these releases?
I will try to schedule upgrades as the fixes come out in the future.
Thanks - Lynn From: users-list <users-list-bounces+lcj34=cornell.edu@monetdb.org<mailto:users-list-bounces+lcj34=cornell.edu@monetdb.org>> on behalf of Brian Hood <brianh6854@googlemail.com<mailto:brianh6854@googlemail.com>> Reply-To: Communication channel for MonetDB users <users-list@monetdb.org<mailto:users-list@monetdb.org>> Date: Sunday, October 16, 2016 at 2:30 PM To: Communication channel for MonetDB users <users-list@monetdb.org<mailto:users-list@monetdb.org>> Subject: Re: new monetdb version, old farm
Hi Lynn,
Like Soerjd mentioned previously you should upgrade in sequence so try not get behind in releases.
Also as I found out the hard way it's impossible to downgrade.
It plays havoc with your BBP version and catalog from memory.
Regards,
Brian Good
On Oct 16, 2016 1:21 PM, "Lynn Carol Johnson" <lcj34@cornell.edu<mailto:lcj34@cornell.edu>> wrote:
To verify: You¹re saying my upgrade from Jul2015-SP3 to Jun2016-SP2 does not require a database recreation as the farm is not that old? This would be great.
Thanks - Lynn
On 10/14/16, 5:08 PM, "users-list on behalf of Martin Kersten" <users-list-bounces+lcj34=cornell.edu@monetdb.org<mailto:cornell.edu@monetdb.org> on behalf of martin@monetdb.org<mailto:martin@monetdb.org>> wrote:
Upgrade paths are automatic from the previous feature release, unless we have announced that a re-create is necessary due to internal changes that can not be handled automatically. Upgrades from bug-fix releases never require a database re-creation.
Upgrading over multiple feature releases, i.e. a very old dbfarm, is not supported. A dump and restore is the way to go.
regards, Martin
On 14/10/16 22:27, Lynn Carol Johnson wrote:
Hello -
My understanding is you should not run a new monetdb version with a dbfarm created from an older version. We have just updated our system from a Jul2015-SP3 version to the latest Jun2016-SP2 version.
I have created a new db farm and plan to recreate the tables in the new farm.
My question; How do you remove the old dbfarm? Our data is quite large (1.8 T) and I¹d like to retrieve this space for other use. While I can start the db against the new farm, I can find no method of removing the old dbfarm to reclaim this space.
Thanks - Lynn
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