Login or Register to Ask a Question and Join Our Community


UNIX for Dummies Questions & Answers

Kernal Information

 
Thread Tools Search this Thread
Top Forums UNIX for Dummies Questions & Answers Kernal Information
# 1  
Old 02-14-2007
Kernal Information
Hi friends,
i would like to know the kernal information (semaphores), which command do i use

Thanks
# 2  
Old 02-14-2007
Which OS? (post output of uname -a)

For example, under Linux you can use

ipcs -s

Cheers
ZB
# 3  
Old 02-14-2007
SunOS
hi zazzybob,
i'm using Solaris, i need to know the kernal configuration for oracle database.
thanks
# 4  
Old 02-14-2007
Use sysdef to see current limits, e.g.
Code:
 /usr/sbin/sysdef | grep '(SEM'
   100  semaphore identifiers (SEMMNI)
  1760  semaphores in system (SEMMNS)
    30  undo structures in system (SEMMNU)
   610  max semaphores per id (SEMMSL)
    10  max operations per semop call (SEMOPM)
    10  max undo entries per process (SEMUME)
 32767  semaphore maximum value (SEMVMX)
 16384  adjust on exit max value (SEMAEM)

then modify /etc/system (and reboot) to set your limits as per the Oracle installation documentation, for example:
Code:
* ----------------------------------------
*  Oracle Shared Memory Settings
* ----------------------------------------
set shmsys:shminfo_shmmax=4294967295
set shmsys:shminfo_shmmin=1
set shmsys:shminfo_shmmni=100
set shmsys:shminfo_shmseg=10

* ----------------------------------------
*  Oracle Semaphores Settings
* ----------------------------------------
set semsys:seminfo_semmns=1760
set semsys:seminfo_semmsl=610
set semsys:seminfo_semmni=100

* ----------------------------------------
* END ORACLE Settings
* ----------------------------------------

Cheers
ZB
# 5  
Old 02-15-2007
Hi ZazzyBob ..


Thats works for HP as well thanks for the information ...

Great ....


Thanks,
Arun.
 
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Red Hat

Error: kernal panic not syncing

HI All, server stopped here, we are suspecting server crash, need install new OS. Any suggestions on this. kindly help to us. Thanks Rajesh (0 Replies)
Discussion started by: Rajesh_Apple
0 Replies

2. Linux

Linux Kernal version numbering

Please clarify on below two which one is the latest Kernal version. Also clarify me , how to break and understand, which part meant for what? kernel-2.6.18-348.6.1.el5.i686.rpm kernel-2.6.18-308.11.1.el5.i686.rpm Thanks (3 Replies)
Discussion started by: Siva SQL
3 Replies

3. Solaris

Kernal Parameters

Hi, Can you please let me know about kernal parameters? Where we can see that kernal parameters? we are using System = SunOS 5.10. Please let me know commands to see these kernal parameters file or files. (1 Reply)
Discussion started by: kancherla.sree
1 Replies

4. SCO

Kernal Panic questions

I am trying to restore Unixware 7.1 from a backup using RestoreEdge which is from Microline version 2. The restore is on another machine using the same RAID controller and TBU. We are retiring the other machine. Anyway, we get to disk #2 and it panics. Here is the Pic. Can anyone tell me... (13 Replies)
Discussion started by: ccd1977
13 Replies

5. Solaris

kernal parameter setting

hi, can anybody tell me how to increase the parameters like project.max-shm-ids on solaris10. i have used prctl, but got reset while server reboot. thnks and regards Ajay (1 Reply)
Discussion started by: ajaysahoo
1 Replies

6. UNIX for Dummies Questions & Answers

How does the Kernal schedules Tasks?

hello all, as we know that the kernal Schedules tasks with some time slice given to each. how does the Kernal know that the time of a Task has been elapsed? does it follow the syatem Clock?or how? thanks for your time (4 Replies)
Discussion started by: compbug
4 Replies

7. Linux

reload kernal without reboot

Hello! Does anyone know howto reload your kernal without rebooting the machine? I´ve updated the "/etc/security/limits.conf " file and need to make this active without rebooting the machine. this is Red Hat Advanced Server 2.1AS Regards... dOzY (3 Replies)
Discussion started by: dozy
3 Replies

8. UNIX for Dummies Questions & Answers

Kernal Panic

Received the following on the weekend. Panic:k_trap kernel mode trap type 0X0000000e cannot dump 163739 pages to dumpdev hd (1/41):space for only 48640 pages Dump not complete Safe to power off or press any key to reboot Any ideas how to fix this one? It also happen a month ago. (3 Replies)
Discussion started by: jcoleman544
3 Replies

9. Filesystems, Disks and Memory

kernal parameters on Linux 7.3

Hi all, I am running 7.3 Redhat Linux, I have Oracle database running on it and I have some problem with the memory. every time I startup the database, the memory was peak up to 630M of Ram out 640M ram on the entire box and I didn't specify that much of memory on my database. Oracle advise me... (2 Replies)
Discussion started by: lapnguyen
2 Replies

10. UNIX for Advanced & Expert Users

kernal log message

Hi all, we have been noticed that few of processes failed with no reason. when I chcked the log messages, I have got the following error messages writen to ktlog just a few minutes before! When the kernel writes such warning meassages? will the system sends/generates any signals like... (1 Reply)
Discussion started by: reddyb
1 Replies
Login or Register to Ask a Question