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I've currently got a 64-bit version of a package installed (subversion-javaHL to be exact). I need to roll this back to its 32-bit counterpart.

Is there a way to do this without simply uninstalling it?

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4 Answers 4

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rpm -e subversion-javahl-1.4.2-4.el5.x86_64

yum install subversion-javahl-1.4.2-4.el5.i386

The version numbers here assume you're running the latest CentOS/RHEL. You might run into wrinkles based on dependencies... in which case you'll need to do the same operation with the base subversion package.

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    The OP asked for a way to do this without simply uninstalling. The first line uninstalls.
    – kbyrd
    Jun 5, 2009 at 23:44
  • Yeah, but if you want a package off your system, you have to uninstall it. I don't know of any one-shot way to replace a package with an alternate arch. Especially since they can coexist on 64-bit systems.
    – Adam D'Amico
    Jun 5, 2009 at 23:55
  • If there's no way to downgrade in place, that's fine -- just asking. I'll keep this marked as answered as it still solves my problem to some degree. I'll switch that if someone knows how to downgrade in place.
    – jmccartie
    Jun 5, 2009 at 23:55
  • Might be helpful: add --nodeps to force the uninstallation of the package, if the erase is blocked because of dependencies.
    – ithinkihaveacat
    Mar 28, 2011 at 9:15
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Yum allows plugins to be installed and the Fedora repo contains a yum-allowdowngrade plugin (not sure about CentOS/RHEL). After installing, you should be able to run the following:

yum --allow-downgrade install subversion-javahl-1.4.2-4.el5.i386

I have never tried using it though and am not sure if switching from 64-bit to 32-bit would technically be considered a downgrade.

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If the --allow-downgrade doesn't work, and there's other things depending on this that won't let you uninstall, you could do this in a single transaction using the yum shell:

# yum shell
> remove subversion-javahl-1.4.2-4.el5.x86_64
> install subversion-javahl-1.4.2-4.el5.i386
> run
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On RHEL the yum-allowuninstall plugin is not available, to do this use yum downgrade <packagename>. This requires one step at a time downgrades, but is likely easier on the dependency engine.

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