[root@node1 ~]# man ipcs
IPCS(8) Linux Programmer’s Manual IPCS(8)
NAME
ipcs – provide information on ipc facilities
SYNOPSIS
ipcs [ -asmq ] [ -tclup ]
ipcs [ -smq ] -i id
ipcs -h
DESCRIPTION
ipcs provides information on the ipc facilities for which the calling process has read access.
The -i option allows a specific resource id to be specified. Only information on this id will be printed.
Resources may be specified as follows:
-m shared memory segments
-q message queues
-s semaphore arrays
-a all (this is the default)
[root@node1 ~]# ipcs
—— Shared Memory Segments ——–
key shmid owner perms bytes nattch status
0xd root 600 4 0
0x00000000 root 644 80 2
0xc root 600 4 0
0x00000000 root 644 16384 2
0x00000000 root 644 280 2
0x6c00002c zabbix 600 6
0x00000000 root 600 2 dest
0x root 600 4 0
0x00000000 root 600 2 dest
0x00000000 root 600 2 dest
0x00000000 root 600 2 dest
0x00000000 root 600 2 dest
0x00000000 root 600 2 dest
0x00000000 root 600 2 dest
0x00000000 grid 600 2 dest
0x00000000 grid 600 2 dest
0x00000000 root 600 2 dest
0x00000000 grid 600 2 dest
0x00000000 grid 600 2 dest
0x00000000 grid 600 2 dest
0x00000000 grid 600 2 dest
0x00000000 oracle 600 2 dest
0x00000000 oracle 600 2 dest
0x00000000 oracle 600 2 dest
0x00000000 oracle 600 2 dest
0x00000000 oracle 600 2 dest
0x00000000 oracle 600 2 dest
0x00000000 grid 640 4096 0
0x00000000 grid 640 4096 0
0xa65c9e90 grid 640 4096 0
0x00000000 oracle 640 4096 0
0x00000000 oracle 640 4096 0
0x0dbf9df8 oracle 640 4096 0
0x00000000 grid 600 2 dest
0x00000000 grid 600 2 dest
—— Semaphore Arrays ——–
key semid owner perms nsems
0x000000a7 0 root 600 1
0x7a00002c 32769 zabbix 600 13
0xe43eb780 grid 640 684
0x4f50ede4 oracle 640 154
—— Message Queues ——–
key msqid owner perms used-bytes messages
[root@node1 ~]#
[root@node1 ~]# ipcs -m
—— Shared Memory Segments ——–
key shmid owner perms bytes nattch status
0xd root 600 4 0
0x00000000 root 644 80 2
0xc root 600 4 0
0x00000000 root 644 16384 2
0x00000000 root 644 280 2
0x6c00002c zabbix 600 6
0x00000000 root 600 2 dest
0x root 600 4 0
0x00000000 root 600 2 dest
0x00000000 root 600 2 dest
0x00000000 root 600 2 dest
0x00000000 root 600 2 dest
0x00000000 root 600 2 dest
0x00000000 root 600 2 dest
0x00000000 grid 600 2 dest
0x00000000 grid 600 2 dest
0x00000000 root 600 2 dest
0x00000000 grid 600 2 dest
0x00000000 grid 600 2 dest
0x00000000 grid 600 2 dest
0x00000000 grid 600 2 dest
0x00000000 oracle 600 2 dest
0x00000000 oracle 600 2 dest
0x00000000 oracle 600 2 dest
0x00000000 oracle 600 2 dest
0x00000000 oracle 600 2 dest
0x00000000 oracle 600 2 dest
0x00000000 grid 640 4096 0
0x00000000 grid 640 4096 0
0xa65c9e90 grid 640 4096 0
0x00000000 oracle 640 4096 0
0x00000000 oracle 640 4096 0
0x0dbf9df8 oracle 640 4096 0
0x00000000 grid 600 2 dest
0x00000000 grid 600 2 dest
[root@node1 ~]# ipcs -s
—— Semaphore Arrays ——–
key semid owner perms nsems
0x000000a7 0 root 600 1
0x7a00002c 32769 zabbix 600 13
0xe43eb780 grid 640 684
0x4f50ede4 oracle 640 154
[root@node1 ~]# ipcs -q
—— Message Queues ——–
key msqid owner perms used-bytes messages
[root@node1 ~]#
[root@node1 ~]# ipcs -l
—— Shared Memory Limits ——–
max number of segments = 4096
max seg size (kbytes) =
max total shared memory (kbytes) =
min seg size (bytes) = 1
—— Semaphore Limits ——–
max number of arrays = 2048
max semaphores per array = 5010
max semaphores system wide =
max ops per semop call = 5010
semaphore max value = 32767
—— Messages: Limits ——–
max queues system wide = 16
max size of message (bytes) = 65536
default max size of queue (bytes) = 65536
[root@node1 ~]#
[root@node1 ~]#
[root@node1 ~]# ipcs -u
—— Shared Memory Status ——–
segments allocated 35
pages allocated 2131
pages resident 1231
pages swapped 0
Swap performance: 0 attempts 0 successes
—— Semaphore Status ——–
used arrays = 4
allocated semaphores = 852
—— Messages: Status ——–
allocated queues = 0
used headers = 0
used space = 0 bytes
[root@node1 ~]#
[root@node1 ~]# ipcs -t
—— Shared Memory Attach/Detach/Change Times ——–
shmid owner attached detached changed
root Dec 1 19:18:46 Dec 1 19:18:46 Dec 1 19:18:46
root Dec 1 19:18:49 Dec 1 19:18:49 Dec 1 19:18:49
root Dec 1 19:18:46 Dec 1 19:18:46 Dec 1 19:18:46
root Dec 1 19:18:49 Dec 1 19:18:49 Dec 1 19:18:49
root Dec 1 19:18:49 Dec 1 19:18:49 Dec 1 19:18:49
zabbix Dec 4 11:43:56 Dec 4 11:43:56 Dec 1 19:22:12
root Dec 1 19:22:18 Dec 1 19:22:18 Dec 1 19:22:17
root Dec 1 19:18:42 Dec 1 19:18:45 Dec 1 19:18:42
root Dec 1 19:22:18 Dec 1 19:22:18 Dec 1 19:22:17
root Dec 1 19:22:18 Dec 1 19:22:18 Dec 1 19:22:18
root Dec 1 19:22:18 Not set Dec 1 19:22:18
root Dec 1 19:22:18 Not set Dec 1 19:22:18
root Dec 1 19:22:19 Dec 1 19:22:19 Dec 1 19:22:18
root Dec 1 19:22:19 Dec 1 19:22:19 Dec 1 19:22:19
grid Dec 1 19:22:20 Dec 1 19:22:20 Dec 1 19:22:19
grid Dec 1 19:35:43 Dec 1 19:35:43 Dec 1 19:22:19
root Dec 1 19:22:20 Not set Dec 1 19:22:20
grid Dec 1 19:22:20 Not set Dec 1 19:22:20
grid Dec 1 19:22:20 Not set Dec 1 19:22:20
grid Dec 1 19:35:43 Dec 1 19:35:43 Dec 1 19:22:20
grid Dec 1 19:22:20 Not set Dec 1 19:22:20
oracle Dec 1 19:22:22 Dec 1 19:22:22 Dec 1 19:22:22
oracle Dec 1 19:22:23 Dec 1 19:22:23 Dec 1 19:22:22
oracle Dec 1 19:22:23 Not set Dec 1 19:22:23
oracle Dec 1 19:22:23 Not set Dec 1 19:22:23
oracle Dec 1 19:22:23 Dec 1 19:22:23 Dec 1 19:22:23
oracle Dec 1 19:22:23 Not set Dec 1 19:22:23
grid Dec 4 11:39:41 Dec 4 11:39:41 Dec 1 20:31:31
grid Dec 4 11:39:41 Dec 4 11:39:41 Dec 1 20:31:31
grid Dec 4 11:39:41 Dec 4 11:39:41 Dec 1 20:31:31
oracle Dec 4 11:43:49 Dec 4 11:43:49 Dec 1 20:32:39
oracle Dec 4 11:43:49 Dec 4 11:43:49 Dec 1 20:32:39
oracle Dec 4 11:43:49 Dec 4 11:43:49 Dec 1 20:32:39
grid Dec 1 19:26:21 Not set Dec 1 19:26:21
grid Dec 1 19:26:21 Not set Dec 1 19:26:21
—— Semaphore Operation/Change Times ——–
semid owner last-op last-changed
0 root Tue Dec 1 19:18:50 2015 Tue Dec 1 19:18:49 2015
32769 zabbix Fri Dec 4 11:44:19 2015 Tue Dec 1 19:22:12 2015
grid Fri Dec 4 11:44:18 2015 Fri Dec 4 11:44:18 2015
oracle Fri Dec 4 11:44:17 2015 Fri Dec 4 11:44:17 2015
—— Message Queues Send/Recv/Change Times ——–
msqid owner send recv change
[root@node1 ~]# ipcs -c
—— Shared Memory Segment Creators/Owners ——–
shmid perms cuid cgid uid gid
600 root root root root
644 root root root root
600 root root root root
644 root root root root
644 root root root root
600 zabbix zabbix zabbix zabbix
600 root root root root
600 root root root root
600 root root root root
600 root root root root
600 root root root root
600 root root root root
600 root root root root
600 root root root root
600 grid oinstall grid oinstall
600 grid oinstall grid oinstall
600 root root root root
600 grid oinstall grid oinstall
600 grid oinstall grid oinstall
600 grid oinstall grid oinstall
600 grid oinstall grid oinstall
600 oracle oinstall oracle oinstall
600 oracle oinstall oracle oinstall
600 oracle oinstall oracle oinstall
600 oracle oinstall oracle oinstall
600 oracle oinstall oracle oinstall
600 oracle oinstall oracle oinstall
640 grid oinstall grid oinstall
640 grid oinstall grid oinstall
640 grid oinstall grid oinstall
640 oracle asmadmin oracle asmadmin
640 oracle asmadmin oracle asmadmin
640 oracle asmadmin oracle asmadmin
600 grid oinstall grid oinstall
600 grid oinstall grid oinstall
—— Semaphore Arrays Creators/Owners ——–
semid perms cuid cgid uid gid
0 600 root root root root
32769 600 zabbix zabbix zabbix zabbix
640 grid oinstall grid oinstall
640 oracle asmadmin oracle asmadmin
—— Message Queues: Creators/Owners ——–
msqid perms cuid cgid uid gid
[root@node1 ~]#
[root@node1 ~]# ipcs -p
—— Shared Memory Creator/Last-op ——–
shmid owner cpid lpid
root 8875 8875
root 9663 9671
root 8823 8823
root 9663 9671
root 9663 9671
zabbix 15404 17619
root 15608 15701
root 7032 7032
root 15608 15701
root 15655 15713
root 15717 15538
root 15715 15538
root 15657 15797
root 15657 15797
grid 15822 15887
grid 15824 23340
root 15787 15538
grid 15883 15623
grid 15889 15623
grid 15824 23340
grid 15903 15623
oracle 16001 16062
oracle 16003 16157
oracle 16064 15777
oracle 16066 15777
oracle 16003 16157
oracle 16078 15777
grid 13735 14350
grid 13735 14350
grid 13735 14350
oracle 14766 17565
oracle 14766 17565
oracle 14766 17565
grid 15815 15623
grid 15815 15623
—— Message Queues PIDs ——–
msqid owner lspid lrpid
[root@node1 ~]#
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