ORA-27125: unable to create shared memory segment Linux-x86_64 Error: 28: No space left on device

When starting up an Oracle database, the below errors occur:

ORA-27125: unable to create shared memory segment
Linux-x86_64 Error: 28: No space left on device
Additional information: 3773
Additional information: 3221225472

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3 thoughts on “ORA-27125: unable to create shared memory segment Linux-x86_64 Error: 28: No space left on device”

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Kelly Kong says:

February 28, 2020 at 12:52 pm

HI , I got a same message when I creating a new database using DBCA. Unable to create shared memory segment. How to fix it?

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1. dbalifeeasy says:
  
  February 28, 2020 at 3:06 pm
  
  hi Kelly,
  Are you installing Oracle on Linux ? according to my blog, it seems OS parameter kernel.shmall is too small. can you check as per my blog to see any luck ?
  
  thanks,
  dbalifeeasy
  
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