ORA-27154 : post/wait create failed

[root@cluster2 ~]# /u01/app/grid/bin/crsctl start cluster
CRS-2672: Attempting to start 'ora.asm' on 'cluster2'
ORA-27154: post/wait create failed
CRS-2674: Start of 'ora.asm' on 'cluster2' failed
CRS-2679: Attempting to clean 'ora.asm' on 'cluster2'
CRS-2681: Clean of 'ora.asm' on 'cluster2' succeeded
CRS-4000: Command Start failed, or completed with errors.

Penyebabnya adalah adanya kesalahan di setingan kernel parameter. Maka dari itu, cek setingan kernelnya:
[root@cluster1 ~]# vi /etc/sysctl.conf
kernel.sem = 250 100

setingan kernel yang direkomendasikan Oracle :
kernel.sem = 250 32000 100 128

edit setingan kernel parameter tersebut, kemudian :
[root@cluster1 ~]# sysctl -p
net.ipv4.ip_forward = 0
net.ipv4.conf.default.rp_filter = 1
net.ipv4.conf.default.accept_source_route = 0
kernel.sysrq = 0
kernel.core_uses_pid = 1
net.ipv4.tcp_syncookies = 1
kernel.msgmnb = 65536
kernel.msgmax = 65536
kernel.shmmax = 68719476736
kernel.shmall = 4294967296
kernel.sem = 250 32000 100 128
fs.file-max = 6815744
net.ipv4.ip_local_port_range = 9000 65500
net.core.rmem_default = 262144
net.core.wmem_default = 262144
net.core.rmem_max = 4194304
net.core.wmem_max = 1048576
fs.aio-max-nr = 1048576

kemudian, jalankan kembali perintah 'start cluster'.