怎么连接不上呢？

yangguaiguai

我要连接数据库做一些查询的动作，编写了一个脚本，执行后老是要退出连接，大家帮我看看是咋回事呀？
#！/bin/ksh
su - oracle  <<EOF
sqlplus /nolog
connect system/manager as sysdba
......

执行后却出现以下信息
stty: tcgetattr: Not a typewriter
stty: tcgetattr: Not a typewriter

SQL*Plus: Release 9.2.0.2.0 - Production on Thu Jul 17 10:12:56 2003

Copyright (c) 1982, 2002, Oracle Corporation.  All rights reserved.

SQL> Connected.
SQL> Disconnected from Oracle9i Enterprise Edition Release 9.2.0.2.0 - Productio
n
With the Partitioning and Real Application Clusters options
JServer Release 9.2.0.2.0 - Production