Oracle Linux: 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 JULY 17, 2024
Applies to:
Linux OS - Version Oracle Linux 6.2 with Unbreakable Enterprise Kernel [2.6.32] to Oracle Linux 6.2 with Unbreakable Enterprise Kernel [2.6.32] [Release OL6U2]Oracle Cloud Infrastructure - Version N/A 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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In this Document
| Symptoms |
| Changes |
| Cause |
| Solution |
| References |