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Database is not starting up with ORA-27102 after enabling hugepages (Doc ID 1990322.1)

Last updated on NOVEMBER 23, 2023

Applies to:

Oracle Database - Enterprise Edition - Version and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Backup Service - Version N/A and later
Information in this document applies to any platform.Symptoms

Hugespages is set as per recommended by in Doc ID 401749.1, also Kernel parameters "memlock" and "shmmax" are set properly. 

Follow Doc ID 361468.1 for implementing hugepages. 

Database failed to start due to following error after enabling hugepages :

SQL> startup nomount
ORA-27102: out of memory
Linux-x86_64 Error: 28: No space left on device


Command "free" shows enough free space, also SWAP is configured with enough size and not full.

The Database can be started after setting USE_LARGE_PAGES=false with same SGA size (this case - 25g), however The Database can't be started with hugepages


Enabling hugepages


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