Buen dia .

estoy implementado el siguiente codigo para consultar un dato de tipo blob de oracle


   
            BLOB blobo = null;
            blobo = (BLOB) rs.getBlob(2);
            System.out.println(blobo);
           
            InputStream byte_stream = blobo.getBinaryStream();
            System.out.println("byte_stream:" + byte_stream);
            ObjectInputStream ois = new ObjectInputStream(byte_stream);
           
            Object x = ois.readObject();
           
           FormatoBean b = (FormatoBean) x;
            stmt.close();
            rs.close();


y me esta marcando una excepcion en esta linea
Object x = ois.readObject();

la excepcion que me marca es esta

java.io.UTFDataFormatException
    at java.io.ObjectInputStream$BlockDataInputStream.readUTFSpan(ObjectInputStream.java(Compiled Code))
    at java.io.ObjectInputStream$BlockDataInputStream.readUTFBody(ObjectInputStream.java(Compiled Code))
    at java.io.ObjectInputStream$BlockDataInputStream.readUTF(ObjectInputStream.java(Inlined Compiled Code))
    at java.io.ObjectInputStream.readUTF(ObjectInputStream.java(Inlined Compiled Code))
    at java.io.ObjectStreamClass.readNonProxy(ObjectStreamClass.java(Compiled Code))
    at java.io.ObjectInputStream.readClassDescriptor(ObjectInputStream.java(Inlined Compiled Code))
    at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java(Compiled Code))
    at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java(Compiled Code))
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java(Compiled Code))
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java(Compiled Code))
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java(Compiled Code))
    at java.util.ArrayList.readObject(ArrayList.java(Compiled Code))
    at sun.reflect.GeneratedMethodAccessor40.invoke(Unknown Source)


a alguien le ha pasado algo similar, le he estado dando vueltas pero no he encontrado la solucion.

se los agradezco

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