RE: "SET UID" not set for oracle executable ?

From: <Jared.Still_at_radisys.com>
Date: Thu, 12 Aug 2004 13:56:31 -0700
Message-ID: <OF40FD2F74.ACB3E813-ON88256EEE.00727603-88256EEE.00730BFA@radisys.com>

> Cool! The last time I ever saw one without suid was 8.0.5.x, and I
can't
> remember the details about it. All I can remember is that it would run.
> Now, you got me wondering how the listener interacts with or uses the
oracle
> executable to spawn a dedicated session that it requires suid on the
> executable; and what differences (if any) there are when connecting with
> shared server with pre-spawn server processes.
>
> I doubt if knowing this has any practical use, but for those who are
> terminally bored, looking for something to pass the time ....
>

Without SUID, Oracle cannot shmat() to IPC memory segments when the oracle binary is invoked by a user.

13:56-rsysdevdb:dv06:jkstill-4 > sqlplus js001292/no_password_here

SQL*Plus: Release 10.1.0.2.0 - Production on Thu Aug 12 13:56:07 2004

ERROR:
ORA-01034: ORACLE not available
ORA-27123: unable to attach to shared memory segment Linux Error: 13: Permission denied

Enter user-name:
[ /home/jkstill/tmp ]

13:56-rsysdevdb:dv06:jkstill-4 > oerr ora 27123 27123, 00000, "unable to attach to shared memory segment" // *Cause: shmat() call failed
// *Action: check permissions on segment, contact Oracle support [ /home/jkstill/tmp ]

13:56-rsysdevdb:dv06:jkstill-4 >

Jared

Please see the official ORACLE-L FAQ: http://www.orafaq.com

To unsubscribe send email to: oracle-l-request_at_freelists.org put 'unsubscribe' in the subject line.

--
Archives are at http://www.freelists.org/archives/oracle-l/
FAQ is at http://www.freelists.org/help/fom-serve/cache/1.html
-----------------------------------------------------------------

Received on Thu Aug 12 2004 - 15:52:21 CDT