Thank you very much - Lynn
From: Stefan Manegold mailto:stefan.manegold@cwi.nl>
Date: Monday, October 17, 2016 at 2:38 AM
To: Communication channel for MonetDB users mailto:users-list@monetdb.org>, Lynn Carol Johnson mailto:lcj34@cornell.edu>
Subject: Re: new monetdb version, old farm
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 mailto: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 mailto:users-list-bounces+lcj34=cornell.edu@monetdb.org> on behalf of Brian Hood mailto:brianh6854@googlemail.com>
Reply-To: Communication channel for MonetDB users mailto:users-list@monetdb.org>
Date: Sunday, October 16, 2016 at 2:30 PM
To: Communication channel for MonetDB users 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" 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"
mailto:cornell.edu@monetdb.org on behalf of
martin@monetdb.orgmailto: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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