Thanks. This looks like it's exactly what I was looking for. Is this lexically scoped in such a way that if it happens in a method, the foo_name_space that is require'd in can't be seen by another mod_perl process?

Also, to clarify, here is a small example using Symbol as suggested:

#!/usr/bin/perl
use strict;
use warnings;
use Symbol qw( delete_package );
                                                                      
+                             
eval {
  do './foo_name_space.dat';
  print "within eval: ",$foo_name_space::data,"\n" if $foo_name_space:
+:data;
  delete_package('foo_name_space');
};
if( $@ ){
  print "Oops [$!]","\n";
}
if($foo_name_space::data){
  print "outside eval: ",$foo_name_space::data,"\n"
}else{
  print "no such namespace\n";
}
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