Red Hat ENTERPRISE LINUX 5.1 - LINUX ORACLE Tuning Manual page 24

Chapter 7. Setting Shared Memory
bytes=2736783360 lpid=3688 cpid=3652 nattch=0
att_time=Sat Oct 29 13:36:52 2005
det_time=Sat Oct 29 13:36:52 2005
change_time=Sat Oct 29 11:21:06 2005
To remove the shared memory segment, you could copy and paste shmid and execute:
$ ipcrm shm 32768
Another approach to remove shared memory is to use Oracle's sysresv utility. Here are a few self
explanatory examples on how to use sysresv:
Checking Oracle's IPC resources:
$ sysresv
IPC Resources for ORACLE_SID "orcl" :
Shared Memory
ID KEY
No shared memory segments used
Semaphores:
ID KEY
No semaphore resources used
Oracle Instance not alive for sid "orcl"
$
Instance is up and running:
$ sysresv -i
IPC Resources for ORACLE_SID "orcl" :
Shared Memory:
ID KEY
2818058 0xdc70f4e4
Semaphores:
ID KEY
688128 0xb11a5934
Oracle Instance alive for sid "orcl"
SYSRESV-005: Warning
Instance maybe alive - aborting remove for sid "orcl"
$
Instance has crashed and resources were not released:
$ sysresv -i
IPC Resources for ORACLE_SID "orcl" :
Shared Memory:
ID KEY
32768 0xdc70f4e4
Semaphores:
ID KEY
98304 0xb11a5934
Oracle Instance not alive for sid "orcl"
Remove ipc resources for sid "orcl" (y/n)?y
Done removing ipc resources for sid "orcl"
$
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