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 and later
IBM AIX on POWER Systems (64-bit)
***Checked for relevance on 01-Sep-2017***


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.


Sign In with your My Oracle Support account

Don't have a My Oracle Support account? Click to get started

My Oracle Support provides customers with access to over a
Million Knowledge Articles and hundreds of Community platforms