How to fix the Oracle error CRS-01805: Unable to connect to the CSS daemon, return code number?

In this post, you’ll learn more about the Oracle ErrorCRS-01805: Unable to connect to the CSS daemon, return code number with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

CRS-01805: Unable to connect to the CSS daemon, return code number

Reason for the Error CRS-01805: Unable to connect to the CSS daemon, return code number

Cause: Could not initialize the CSS connection.

How to fix the Error CRS-01805: Unable to connect to the CSS daemon, return code number ?

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

Action: Verify that the CSS daemon is running and restart it if it is not up. Retry the operation.