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Startup Fails with ORA-27125 And Alert Log Shows "Error: ENOSPC while creating shared memory segment of size xxxxx bytes" (Doc ID 2325742.1)

Last updated on MARCH 08, 2021

Applies to:

Oracle Database - Enterprise Edition - Version 12.1.0.2 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 Cloud Exadata Service - Version N/A and later
Information in this document applies to any platform.

Symptoms

Undersized SHMMAX resulting to host trying to exceed SHMALL  when adding a new instance as indicated below.

Reset SHMMAX and SHMALL to lower values  and try to connect to the database.

  

Cause

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In this Document
Symptoms
Cause
Solution
References


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