Oracle Error when entering SQLPLUS

When I try to enter SQLPLUS, I get the following message:  

     ERROR:  ORA-01034 ORACLE not available
     ORA-07320: smsget: shmat error when trying to attach sga.
     IBM AIX RISC System/6000 Error: 13: Permission denied

When I do oerr ora 07320 I get the following message:

    Cause: Unable to attach segment
    Action: Check errno. sercose[0] returns segment id. Verify segment

              exists and that permissions are correct.

Anyone know what is going on and what I need to do to correct this problem? Received on Thu Jul 28 1994 - 18:18:49 CEST