Ehcache with java1.6 and Hibernate3.0 and GWT2.0

Dear all,
I am using Ehcache with my (java1.6 and hibernate3.0 and
gwt2.0) project . When i run my application it start running and after
that it gives me "StackOutOfMemoryError" .
I am using some Blob object in my project and it gives the error when
it fetch the blob object .
for handle the blob data i just make a class called
BinaryBlobType.java and this class implements the UserType and it
gives the error of :----

public Serializable disassemble(Object arg0) throws HibernateException
{
return disassemble(arg0);
}

this method .
What can i do to resolve it

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