My configuration: 1. Linux Red Hat 2. JBoss 4.2.0 3. Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 4. Oracle's driver - ojdbc14-10.2.0.4.jar, orai18n-10.2.0.4.jar When I invoke ejb3-methods that should return me a byte's array (I have fields of objects mapped to a blobs) I always get a truncated byte's array with length equals 86 bytes %-0. It is very strange because all invocations very different - different ejb3-methods, tables, fields' mappings (orm.xml). And it is only true for configuration mentioned above in some server. I couldn't reproduce the same problem in other servers (they have similar configuration) but the first server very important - it is a PRODUCTION server. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4231312#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...