方法一：Connection con = dbl.loadConnection();strSql = "insert into table1(id,a) values (1,EMPTY_CLOB())";dbl.executeSql(strSql);String str2 = "select a from "+ " table1 where id=1";ResultSet rs = dbl.openResultSet(str2);if(rs.next()){    CLOB c = ((OracleResultSet)rs).getCLOB("a");    c.putString(1, "长字符串");    String sql =	    "update table1 set a=? where id=1";    PreparedStatement pstmt = con.prepareStatement(sql);    pstmt.setClob(1, c);    pstmt.executeUpdate();    pstmt.close();}con.commit();方法二：Connection con = dbl.loadConnection();CLOB clob   = oracle.sql.CLOB.createTemporary(con, false,oracle.sql.CLOB.DURATION_SESSION);clob.putString(1,  "长字符串");Sql1 = "update table1 set a=? where id=1";PreparedStatement pst = con.prepareStatement(Sql1);pst.setClob(1, clob);pst.executeUpdate();pst.close();con.commit();

总结：生成一个clob对象，通过预处理的setClob达到插入更新的目的