DELPHI+ADO+ORACLE 三层更新问题? 急

1.FORMCREATE:
strSql:='select * from tabUSER where rownum<1'; //不取任何数据
Cds.data=Sockconn.AppServer.Getdata(strSQL);
2.APPENDDATA:
  cds.insert;
  ....
  CDS.POST;
3.SAVEDATA:
  scockconn.appserver.updatedata(strsql,cds.delta,ErrCount);
可以存盘,但要是马上在新增的记录上修改,再存盘,就出错了:Record not found or changed by another user;怎么才能避免此问题,它已困我 3天了!!!