How to change the kernel

From: Wiebe Jansma <Wiebe_Jansma_at_crovadis.com>
Date: Thu, 13 Apr 2000 16:08:39 +0200

Dear people,

After installing ORACLE 8.0.4 on the DEC with Digital Unix version 4.0D I
get the error message 'ORA 27123: unable to attach to shared memory
segment'.
I believe this has to due with attributes in one of the subsystems of the
kernel.

In the past I have modified the file '/etc/sysconfigtab' for tuning the
dynamic kernel with the following attributes:
ipc:
        shm-min = 1
        shm-max = 8388608
        shm-mni = 100
        shm-seg = 10
        shm-all = 240
        num-of-sems = 60
        sem-map = 1026
        sem-mni = 1024
        sem-mns = 1024
        sem-mnu = 1024
        sem-ume = 10
        msg-max = 4096
        msg-mnb = 8192
        msg-mni = 320
        msg-tql = 320

Also I have created a new kernel by modifying the file /sys/conf/DEC, I
have added the following attributes:

dfldsiz 134217728
#maxdsiz 1073741824
dflssiz 2097152
#maxssiz 33554432
shmmin 1
shmmax 8388608
shmmni 100
shmseg 10
semmni 1024
semmns 1024
semume 10
maxdsiz 52428800
maxssiz 52428800

During boot of the system the following errors/messages appears:

attribute shm_all not in subsystem ipc
attribute sem_map not in subsystem ipc
attribute sem_mns not in subsystem ipc
attribute sem_mnu not in subsystem ipc

This modofications have I done in the past on version Digital Unix version
4.0B and Then I did not get these messages.

Can you tell me what to do to configure and tuning the (shared) memory to
let the existing applications and ORACLE run without problems?

Thanks in advange,


Crovadis Development b.v.
Wiebe Jansma - Software Engineer

Email: Wiebe_Jansma_at_crovadis.com

Algolweg 9/15 Tel.: +31 (0)33 455 2060
3821 BG Amersfoort Fax.: +31 (0)33 455 2660
The Netherlands http://www.crovadis.com

-----------------------------
Enabling Supply Chain Technology
-----------------------------
Received on Thu Apr 13 2000 - 14:32:44 NZST

This archive was generated by hypermail 2.4.0 : Wed Nov 08 2023 - 11:53:40 NZDT