疑难杂症 java中Timestamp导致ORA-03115

平台 WAS 5.0.2.17
jdk 1.3.1 
jdbc classes12.jar(对应月 jdk1.3.1)
oracle 9.2.0.7

 ResultSet rset=null;
 java.sql.Connection conn = null;
 Class.forName("oracle.jdbc.driver.OracleDriver");
conn = DriverManager.getConnection(url,"user","pwd");
stmt= conn.createStatement();
strQuerySql="select  CUST_ID,LAST_UPDATE_TIME from CUST"; //LAST_UPDATE_TIME是Timestamp类型      
rset = stmt.executeQuery(strQuerySql);//这一步引发错误ORA-03115: unsupported network datatype or representation

如何解决。baidu google都已经翻遍了，只有问的，没有回答的