12c Upgrade : DBUA fails with Error ORA-27125: unable to create shared memory segment

(Doc ID 2106336.1)

Last updated on SEPTEMBER 01, 2017

Applies to:

Oracle Database - Enterprise Edition - Version and later
Oracle Solaris on SPARC (64-bit)


 While upgrading from 11gr2 to 12c(,DBUA fails with below error –

The environment is a Solaris Super Cluster where AMM(Automatic Memory Management) & hence effectively,OSM(Optimized Shared Memory segment) is being used.


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