// 저장

StringReader reader1 = new StringReader(myString);

Connection conn = DriverManager.getConnection(ORACLE_URL, ORACLE_uid, ORACLE_password);
String sql="insert into CLOB_TEST (ID,discription) values (?, ?)";

PreparedStatement pst=conn.prepareStatement(sql);

pst.setLong(1, id);
pst.setCharacterStream(2, reader1, myString.length());
pst.executeUpdate();

// 조회

sql="select ID,discription from CLOB_TEST where id=?";
pst=conn.prepareStatement(sql);
pst.setLong(1, id);

ResultSet results=pst.executeQuery();

if(results.next()){
    System.out.println("ID: "+results.getLong(1));
    Clob clobData=results.getClob(2);
    Reader reader=clobData.getCharacterStream();
    CharArrayWriter writer=new CharArrayWriter();
    int i=-1;

    while ( (i=reader.read())!=-1){
        writer.write(i);
    }
    System.out.println("CLOB data read from Oracle: "+new String(writer.toCharArray()));

}