How to fix the Oracle error PRKH-01054: Communications error?

In this post, you’ll learn more about the Oracle ErrorPRKH-01054: Communications error with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

PRKH-01054: Communications error

Reason for the Error PRKH-01054: Communications error

Cause: CSS daemon is not running on the local node or unable to authenticate with CSS daemon

How to fix the Error PRKH-01054: Communications error ?

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

Action: Use ‘crsctl check css’ to ensure that CSS daemon is running. If CSS daemon is not running, execute ‘crsctl start crs’ command.