Oracle database instance fail to start with an error: ORA-27137

Solution Unverified - Updated -

Issue

  • Oracle database instance fail to start with following failure message.
ERROR:
  Failed to allocate shared global region with large pages, unix errno = 12.
  Aborting Instance startup.
  ORA-27137: unable to allocate Large Pages to create a shared memory segment

ACTION:
  Total Shared Global Region size is 800 GB. Increase the number of
  unused large pages to atleast 409604 (800 GB) to allocate 100% Shared Global
  Region with Large Pages.

Environment

  • Red Hat Enterprise Linux 6
  • Oracle Database

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