ORA-27123: Unable To Attach To Shared Memory Segment

(Doc ID 2007609.1)

Last updated on JUNE 30, 2017

Applies to:

Oracle Database - Enterprise Edition - Version and later
Information in this document applies to any platform.


Not able to start the database which reports below error:

SQL> startup
ORA-27123: unable to attach to shared memory segment
IBM AIX RISC System/6000 Error: 13: Permission denied



The database was not in use for a long period.


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