How to handle LOB

In Oracle database, if I want to insert or update LOB, I have to use 
        Connection.setCommit(false);
        ResultSet resultSet = Statement.executeQuery("select ... for
update");
        Blob blob = resultSet.getBlob();
        InputStream inputStream = blob.getInputStream();
        ...

        Connection.commit();

How do I implement the above code in ejb because I can not run any
setCommit() or commit() in ejb container?

Jim

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