Cannot connect DB under end user act, but can under oracle!

Hi Netters,

I met a "strange" situation, anyone can help me?

Under an end user account, I cannot connect ORACLE, such as
[sqlplus|sqlforms30|sqlrep] userid/passwd, even sys and system.
BUT sqldba can connect internal.

Under the user oracle account, I can connect ORACLE, such as
[sqlplus|sqlforms30|sqlrep] userid/passwd, even the end userid/passwd.

The error message I got from sqlplus under the end user account is:  

 Enter user-name: system
 Enter password:
 ERROR: ORA-01034: ORACLE not available
 ORA-07320: smsget: shmat error when trying to attach sga.  SVR4 Error: 13: Permission denied

Oh, I should mention that oracle and the end user have same environment.

Thanks in advance!

--
Litao Wu                      
Computer Science Department    Phone: (303)491-8119(H) (303)440-3300(O)
Colorado State University      Email: litao_at_cs.colostate.edu
Fort Collins, CO 80523   
-- 
Litao Wu                      
Computer Science Department    Phone: (303)491-8119
Colorado State University      Email: litao_at_cs.colostate.edu
Fort Collins, CO 80523