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ORA-00845: MEMORY_TARGET not supported on this system

Today I ran into the error “ORA-00845: MEMORY_TARGET not supported on this system”. I am still not sure exactly why.

I shutdown the instance on a Oracle 11g R2 RAC node. Then a short time later I issued the startup command. The other instance on the other node was running fine and made no changes. I exited SQLPlus and launched SQLPlus again. Issued the startup command and everything started up normally.

Off to do some research . . . . . .