When you have a large number of simultaneous updates to a custom database (5000 plus) you get a memory problem. This happens with the Nsure Identity Manager 2.0.1 Notes driver. The large number of updates makes the current Notes driver try to read in all changes and the Note shim runs out of memory.
DirXML Log Event -------------------
Driver = \MyO\test\DirXML Driver Set\NotesEmployeesProd
Thread = Publisher
Level = error
Message = Exception caused by PublicationShim query()