Hi Clive,
if you have tried a procedure on your test server and it works you should really reply it without changes in production ;-)

Anyway, I think that there is not issue to go directly from 1.5.2 to 1.6.2 if all the sql upgrade are processed as in your blog post. I have only notice that you edit the new configuration file (this is the right approach to be sure that all the new configuration parameters are properly configured)
/nano /home/dspace/dspace-1.6.2-src-release/dspace/config/dspace.cfg/

but you run ant with the old configuration file.
/ant -Dconfig=/home/dspace/config/dspace.cfg update/

Two suggestions:
- you want to take advantage of the war overlay mechanism, place your customized version of layout, logo, etc. in module/jspui with proper subpath and it will be packaged in the final version of the webapp without the need to keep (and compile) all the dspace sources on your server - you can write a custom authentication method, mark it as implicit and implement in it your custom getSpecialGroups logic so that you have not to hack the LDAP authentication (be sure to add the custom authentication method to the authentication plugin stack).

Hope this help,
Andrea

Il 03/08/2010 12:43, Clive Gould ha scritto:
Hi

I have just successfully upgraded DSpace from 1.5.2 to 1.6.2 on our
test server, going via DSpace 1.6.0 as an interim step :)

I am in the process of upgrading our production server and wonder if I
can skip the 1.6.0 stage and go straight from 1.5.2 to 1.6.2?

I have blogged the proposed upgrade procedure for future reference:

http://dspacebromley.blogspot.com/2010/08/dspace-162-upgrade-procedure.html

My main concern is with the database upgrade.

Do I have to run the SQL database upgrade script twice, once before
and once after applying the 1.6.2 bitstream fix, or can I get away
with running it just once after applying the bitstream fix?

Comments most welcome, before try and I find out the hard way ;)

Thanks

Clive



Message: 4
Date: Fri, 11 Jun 2010 09:13:22 -0400
From: "Mark H. Wood"<mw...@iupui.edu>
Subject: Re: [Dspace-tech] DSpace 1.6.2 Release to fix key issues in
        1.6.1
To: dspace-tech@lists.sourceforge.net
Message-ID:<20100611131322.gb2...@iupui.edu>
Content-Type: text/plain; charset="us-ascii"

On Fri, Jun 11, 2010 at 12:40:40PM +0100, Clive Gould wrote:
We are currently running DSpace 1.5.2 and I was planning to upgrade
over the summer holiday when I will have some time to spare.

Is it possible to upgrade directly from 1.5.2 to 1.6.2 without going
through the interim upgrade steps?
The answer depends on what we mean by "steps".

You can install 1.6.2 in place of 1.5.2 without first installing 1.6.0
and then 1.6.1.  But you do have to carry out the upgrade instructions
(Upgrading a DSpace Installation), in order, for each version between
the one you start with and the one you end at.  For example, there
should be an SQL script for altering the database schema and
converting the data to match, in the upgrade instructions for 1.5.2 to
1.6.0, which cannot be skipped.

--
Mark H. Wood, Lead System Programmer   mw...@iupui.edu
Balance your desire for bells and whistles with the reality that only a
little more than 2 percent of world population has broadband.
        -- Ledford and Tyler, _Google Analytics 2.0_
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