create or replace type tListofBlob is table of blob;
CREATE OR REPLACE TYPE TBOOKMARK AS OBJECT ( sKey VARCHAR2(50), sValue VARCHAR2(4000), blobs  tListofBlob );
create or replace type tlistall is table of TBOOKMARK;

Object[] objectarray = (Object[]) array.getArray();
        for (Object o : objectarray) {
            STRUCT struct = (STRUCT) o;
            Object[] attribs = struct.getAttributes();
...
}

oracle.jdbc.OracleConnection conn =
                (oracle.jdbc.OracleConnection) new OracleDriver().defaultConnection();
        ArrayDescriptor arr = ArrayDescriptor.createDescriptor("TBLOBLIST", conn);
        ArrayList list = new ArrayList();
        BLOB b = oracle.sql.BLOB.createTemporary(conn,
                true,
                oracle.sql.BLOB.DURATION_SESSION);

        OutputStream str = b.setBinaryStream(0);

while ((count = s.read(mybytearray, 0, mybytearray.length)) != -1) {
                        //int total = count;
                        baos.write(mybytearray, 0, count);
                        baos.flush();
                    }
out.print("lalala");
                    out.flush();

while ((count = s.read(mybytearray, 0, mybytearray.length)) != -1) {
                        //int total = count;
                        baos.write(mybytearray, 0, count);
                        baos.flush();
out.print("lalala");
                    out.flush();
                    }

BufferedInputStream b = new BufferedInputStream(s);
InputStream s = socket.getInputStream();
PrintWriter out = new PrintWriter(socket.getOutputStream(), true);
byte [] mybytearray  = new byte [FILE_SIZE];
int count;
while ((count=s.read(mybytearray, 0, mybytearray.length)) != -1) {
                        //int total = count;
                        baos.write(mybytearray, 0, count);
                        baos.flush();
                    }

                    out.print("lalala");
                    out.flush();

DECLARE
    CONN         UTL_TCP.CONNECTION;
    RETVAL       BINARY_INTEGER;
    L_RESPONSE   VARCHAR2(1000) := '';
    L_TEXT  VARCHAR2(1000);  
    b_DOCX blob;
    l_result    PLS_INTEGER;
    l_buffer    RAW(32766);
    l_amount    BINARY_INTEGER := 32766;
    l_pos       INTEGER := 1;
    l_blob_len  INTEGER;
BEGIN
    select template_data into b_DOCX from parus.USERREPORTS where code = 'тест';
    l_blob_len := DBMS_LOB.getlength(b_DOCX);
     
    --OPEN THE CONNECTION
    CONN := UTL_TCP.OPEN_CONNECTION(
        REMOTE_HOST   => '127.0.0.1',
        REMOTE_PORT   => 1489,
        TX_TIMEOUT    => 10
    );
    
    
     WHILE l_pos <= l_blob_len LOOP
    DBMS_LOB.READ (b_DOCX, l_amount, l_pos, l_buffer);
    l_result := UTL_TCP.write_raw(CONN, l_buffer, l_amount);
    UTL_TCP.flush(CONN);
    l_pos := l_pos + l_amount;
    END LOOP;
    
    -- CHECK AND READ RESPONSE FROM SOCKET
    BEGIN
        WHILE UTL_TCP.AVAILABLE(CONN,10) > 0 LOOP
            L_RESPONSE := L_RESPONSE ||  UTL_TCP.GET_LINE(CONN,TRUE);
            dbms_output.put_line(L_RESPONSE);
        END LOOP;
    EXCEPTION
        WHEN UTL_TCP.END_OF_INPUT THEN
            NULL;
    END;
 
    DBMS_OUTPUT.PUT_LINE('Response from Socket Server : ' || L_RESPONSE);
    UTL_TCP.CLOSE_CONNECTION(CONN);
EXCEPTION
    WHEN OTHERS THEN
        RAISE_APPLICATION_ERROR(-20101,SQLERRM);
        UTL_TCP.CLOSE_CONNECTION(CONN);
END;

PrintWriter out = new PrintWriter(socket.getOutputStream(), true);

socket.getOutputStream().write('lalal'.getBytes());

OutputStream o=socet.getOutputStream;
o.write(filename.getbytes());