[ic] Updating gdbm files

Stefan Hornburg (Racke) racke at linuxia.de
Tue Jan 25 07:37:44 UTC 2011

On 01/25/2011 08:17 AM, Janine Ohmer wrote:
> I have an Interchange 5.2.0 installation that has been running smoothly since 2004.  I'm now trying to move it to a new server, and have run into a problem I haven't been able to solve.
> The problem is that Interchange on the new system isn't always able to read the old system's GDBM files.  When I move the old file aside and restart Interchange, a new one is created that works, but it doesn't contain all the data from the old one (naturally).
> This is made even more peculiar because I have two stores and they are behaving differently.  For a while, one didn't have any GDBM issues at all, while the other wouldn't start up unless I recreated access.gdbm and mv_metadata.gdbm (after which I was unable to log in).  The first one has recently started complaining about component.gdbm, which renders it unusable (server error).  I am not sure, but I wonder if the file becomes unreadable after GDBM has tried to write to it.
> The old server is running gdbm 1.07, which is beyond ancient.  The new one has 1.8.0.  Also the old system is a 32 bit Linux (Fedora, I believe) and the new one is 64 bit Centos.  My best guess is that the difference in GDBM versions is the problem.
> I'd like to know if anyone else has seen this, and hopefully knows how to fix it?
> To stave off the obvious, the next step after getting the sites running as-is, will be to upgrade Interchange. :)

GDBM files are not compatible between 32bit and 64bit operating systems. Export all your tables to text files (e.g. from the administration) in
order to get the up-to-date data in them. Copy the text files to the new system and remove the GDBM files on the new system. This should fix your
problem. I also recommend to get rid of most GDBM files with using DatabaseAuto and managing table structures etc. outside of Interchange.


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