Oracle Error ORA-09884: Two Task interface: SID doens’t match current PU

Oracle Error Message

ORA-09884: Two Task interface: SID doens’t match current PU

Reason for the Error

You are trying to start oracle on another PU than you configured oracle on or there is no entry for this SID in oratab file.

Solution

Start oracle with this SID on its designated PU (see oratab file). Or install the new database with SID.