RE: "SET UID" not set for oracle executable ?
- From: Jared.Still@xxxxxxxxxxx
- To: oracle-l@xxxxxxxxxxxxx
- Date: Thu, 12 Aug 2004 13:56:31 -0700
> 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
Copyright (c) 1982, 2004, Oracle. All rights reserved.
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
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