In this solution let us see how to increase the value of the semaphore in Linux for increasing the processes while we try to start the Oracle multi-instances.
ORA-27154: post/wait create failed ORA-27300: OS system dependent operation:semget failed with status: 28 ORA-27301: OS failure message: No space left on device ORA-27302: failure occurred at: sskgpcreates
To change the value of the semaphore we can perform by editing the below file.
# vi /etc/sysctl.conf
kernel.sem = 250 32000 100 428
semaphores Value has been configured to take effect we need to run
# sysctl -p
That’s it we can now start the Oracle Database instances by avoiding above error.