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