Q: Which PostgreSQL binary data type can Bugzero use? 

A: PostgreSQL has two binary data types, OID and bytea.
   By default, Bugzero uses PostgreSQL bytea for its binary columns. This works only
   for PostgreSQL 7.2 or later. For Version 7.1, you need modify the file db.properties
   by setting postgresql.LONGBINARY to OID instead of bytea.