启数据库失败，大家帮帮忙吧，万分感谢!!!!

本人8.1.7 for readhat7.2 装了3次，终于安装完毕，但在启数据库失败，
头大了。大家帮帮忙吧，万分感谢!!!!
[oracle@localhost oracle]$ svrmgrl

Oracle Server Manager Release 3.1.7.0.0 - Production
Copyright (c) 1997, 1999, Oracle Corporation.  All Rights Reserved.
Oracle8i Enterprise Edition Release 8.1.7.0.1 - Production
With the Partitioning option
JServer Release 8.1.7.0.1 - Production

SVRMGR> connect internal
Connected.
SVRMGR> startup
ORACLE instance started.
ORA-01012: not logged on

SVRMGR> startup
ORA-01031: insufficient privileges

SVRMGR> shutdown immediate
ORA-01012: not logged on

SVRMGR> exit
Server Manager complete.

[oracle@localhost oracle]$ svrmgrl

Oracle Server Manager Release 3.1.7.0.0 - Production
Copyright (c) 1997, 1999, Oracle Corporation.  All Rights Reserved.
Oracle8i Enterprise Edition Release 8.1.7.0.1 - Production
With the Partitioning option
JServer Release 8.1.7.0.1 - Production
SVRMGR> connect internal
Connected.

SVRMGR> startup
ORA-01081: cannot start already-running ORACLE - shut it down first

SVRMGR> shutdown
ORA-01012: not logged on

SVRMGR> exit
Server Manager complete.
　　　　　　

1.login as oracle
2.internal must be used at local