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ORA-27123 During Startup Nomount in 11G on AIX, Failure in SHMAT() (Doc ID 733974.1)

Last updated on FEBRUARY 27, 2019

Applies to:

Oracle Database - Enterprise Edition - Version and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A 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.


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