How to fix the Oracle error ORA-09884: Two Task interface: SID doens’t match current PU?

In this post, you’ll learn more about the Oracle ErrorORA-09884: Two Task interface: SID doens’t match current PU with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

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

Reason for the Error ORA-09884: Two Task interface: SID doens’t match current PU

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.

How to fix the Error ORA-09884: Two Task interface: SID doens’t match current PU ?

You can fix this error in Oracle by following the below steps

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