Problem convert Clob to String

Hi,

In my application I use SAP HANA SP8 db and I use jdk 1.7.

I try to convert Clob to String but I receive the error:

Caused by: com.sap.db.jdbc.exceptions.JDBCDriverException: SAP DBTech JDBC: [1033]: error while parsing protocol: invalid lob locator id (piecewise lob reading): 0x4988400000750

I try to convert the Clob to String with two method: 

1)

public static String clobStringConversion(Clob clb) throws IOException, SQLException

    {

      if (clb == null)

     return  "";

      StringBuffer str = new StringBuffer();

      String strng;

    BufferedReader bufferRead = new BufferedReader(clb.getCharacterStream());

      while ((strng=bufferRead.readLine())!=null)

       str.append(strng);

      return str.toString();

    } 

2)

ButI getthe same error

How can I fixthe problem ?

Thanks!!