Startup Error ORA-27123: Unable To Attach To Shared Memory Segment Linux-x86_64 Error: 22: Invalid argument (Doc ID 1607545.1)

Last updated on OCTOBER 25, 2016

Applies to:

Linux OS - Version Oracle Linux 6.2 with Unbreakable Enterprise Kernel [2.6.32] and later
Linux x86-64
Review currency at 25th.May 2015

Symptoms

The below error is received while trying to start Database on Linux node:

The above condition will not be suitable as the SGA size is only 3Gb, and HugePages defined is 5Gb and the maximum shared memory defined is 68Gb ( shmmax )

 

Changes

Setting the Hugepagesize value

Cause

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