ipcs
 

Hi,
I am oracle dba.I am little bit familiar with Linux.

How to use the Linux commands (IPCS,top,vmstat,iostat,sar and so on).
how to use properly these commands.


Oracle SGA (MEMORY)

SQL> show sga

Total System Global Area 544030720 bytes
Fixed Size 1301168 bytes
Variable Size 390071632 bytes
Database Buffers 146800640 bytes
Redo Buffers 5857280 bytes



[root@sys1 ~]# ipcs

------ Shared Memory Segments --------
key shmid owner perms bytes nattch status
0xab5f5188 163840 oracle 660 4096 0
0x00000000 98305 gdm 600 393216 2 dest

------ Semaphore Arrays --------
key semid owner perms nsems
0xf649eaf8 229376 oracle 660 154

------ Message Queues --------
key msqid owner perms used-bytes messages

The first place anyone would suggest would be to man for the commands.

Hope http://www.cyberciti.biz/tips/top-li...ing-tools.html helps

Hi,
Thanks for reply.
My big confusion is what basis(measurement) i have to compare the values?

Please anyone give the examples for these commands.

Did you want something like this?