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 NOVEMBER 14, 2017

Applies to:

Oracle Database - Enterprise Edition - Version 12.1.0.2 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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