How do you do this from the command line? How well does backing out a RPM work? (eg, dealing w/ rpm dependency hell). It's not going to be any different via bladelogic. This is more an issue w/ RPM than blade. I'm assuming the same for aix as I don't know it as well.
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It's simply impossible from the command line. On Solaris, the files which are replaced by the patch, are stored on the server under /var/something. This allows to back out a patch. RPMs just overwrite. The only option that rpm knows is uninstall and replace by another package (e.g. older version). But this breaks dependecies and as you have no instant replacement for all packages, rather than dealing with one package at a time, backing out a single rpm is (almost) not doable. The reason is given by rpm's capabilities.
AIX is a little different though. You can uninstall AIX patches until they have been committed. AIX VPC gives you the option to commit patches that I have talked to do not generally find a need to uninstall AIX patches.