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Oracle Shared Memory Segment Permission Changed in 12.2 and Starting With PSU (Doc ID 2241468.1)

Last updated on FEBRUARY 15, 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 Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Linux x86-64
IBM AIX on POWER Systems (64-bit)
Oracle Solaris on x86-64 (64-bit)
Oracle Solaris on SPARC (64-bit)
HP-UX Itanium


After Applying Oracle Database with July 2016 PSU/BP Shared Memory segment permission changed to 600(is no longer readable for the group but the owner)

$ ipcs -m

------ Shared Memory Segments --------

key        shmid      owner      perms      bytes      nattch     status    

0x00000000 22872084   <USER>     640        12582912   21                     

0x00000000 22904853   <USER>     640        721420288  21                     

0xd41b1c5c 22937622   <USER>     640        2097152    21




Applying July2016 PSU or Upgrading to 


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