DBD::Oracle::Troubleshooting::Sun - Tips and Hints to Troubleshoot DBD::Oracle on Sun
If you get this on a Solaris 9 and 10 box
"Outofmemory! Callback called exit. END failed--call queue aborted."
The solution may be as simple as not having you "ORACLE_HOME" Defined in the environment.
It seems that having it defined will prevent the error.
This software is copyright (c) 1994 by Tim Bunce.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.