How to fix the Oracle error ORA-29709: Communication failure with Cluster Synchronization Services?

In this post, you’ll learn more about the Oracle ErrorORA-29709: Communication failure with Cluster Synchronization Services with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-29709: Communication failure with Cluster Synchronization Services

Reason for the Error ORA-29709: Communication failure with Cluster Synchronization Services

Could not communicate with CSS to complete the operation.

How to fix the Error ORA-29709: Communication failure with Cluster Synchronization Services ?

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

Verify the state of the CSS. If the CSS died or is not responding, check the ORACLE and CSS trace files for errors and contact Oracle Support Services.