ORA-27123 During Startup Nomount in 11G on AIX, Failure in SHMAT()

(Doc ID 733974.1)

Last updated on SEPTEMBER 02, 2017

Applies to:

Oracle Database - Enterprise Edition - Version 11.1.0.6 and later
IBM AIX on POWER Systems (64-bit)
***Checked for relevance on 01-Sep-2017***


Symptoms

Creating the database after installing 11g on AIX6L fails with following errors:

SQL> startup nomount pfile="/oracle/db11g/admin/init.ora";
ORA-27123: unable to attach to shared memory segment
IBM AIX RISC System/6000 Error: 22: Invalid argument
Additional information: 7
Additional information: 67108867



Database creation using DBCA also fails with same error.

Cause

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