How to use setCharacterStream to update Clob in Oracle?
String toBeUpdated = ""
     StringReader reader = new StringReader(toBeUpdated);
     pStmt.setCharacterStream(parameterIndex,reader , toBeUpdated.length());

long id = ...
    String content = ... // CLOB content
    try {
        Class.forName ("oracle.jdbc.OracleDriver");
        Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@MY_SERVER:1521:MY_DB", "user", "pass");
        String query = "UPDATE MY_TABLE SET MY_CLOB_COLUMN = ? WHERE ID = ? ";
        OraclePreparedStatement opstmt = (OraclePreparedStatement)conn.prepareStatement(query);
        opstmt.setStringForClob(1, content);
        opstmt.setLong(2, id);
        int result = opstmt.executeUpdate();
         System.out.println("Resultado para : " + tabla + " - " + columna + "  - " +  id + ":" + result);
    } catch (SQLException ex) {
        //Log here
    } catch (ClassNotFoundException ex) {
        //Log here
    }