Home > Oracle in general > ORA-27154: post/wait create failed / ORA-27301: OS failure message: No space left on device when starting ASM or database instance

ORA-27154: post/wait create failed / ORA-27301: OS failure message: No space left on device when starting ASM or database instance

April 11th, 2011 Leave a comment Go to comments

Today i came accross a very strange error. After rebooting one cluster node (which ran flawlessly before!) ASM instance came up fine but database instance failed with:

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: sskgpsemsper

It turned out the kernel settings were insufficent. The semaphore settings caused problems.

In /etc/sysctl.conf:

kernel.sem = 250 32000 100 128

This line needs to be changed to:

kernel.sem = 250 32000 100 256

Note the change of the last number from 128 to 256. After that applying the settings is done as root with:

sysctl -p

After that all instances came up just fine.

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  1. santosh
    August 17th, 2011 at 21:04 | #1
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    Thanks.. this worked for me.

  2. Mehmet Tufekcioglu
    January 3rd, 2012 at 20:59 | #2
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    Thank you! It has worked for me too!

  3. Milind
    January 13th, 2012 at 18:28 | #3
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    It could be due to the number of processes in initialization parameter files

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