>...No I've tried doing it all at once (which is of course ridiculous) and
>it crashed on being out of memory.

Specific error messages always help us to help you.
You did not say if you had boosted or unlimited your Unix Resource Limits
in undertaking the AIX-based restoral.  You must ALWAYS be mindful of
those limits when invoking resource-intensive commands or starting
daemons.  You should probably review your /etc/security/limits
definitions to see if they are appropriate for your system: default
limit values are typically inadequate for "system" work.

  Richard Sims, BU