How to fix the Oracle error TNS-01187: No proxy service handler available?

In this post, you’ll learn more about the Oracle ErrorTNS-01187: No proxy service handler available with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

TNS-01187: No proxy service handler available

Reason for the Error TNS-01187: No proxy service handler available

Cause: One of the following conditions has occurred:

– the proxy service was not registered

– the proxy service was registered, but was blocking new connections

– all of the registered proxy service handlers were blocking new connections

How to fix the Error TNS-01187: No proxy service handler available ?

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

Action: If the proxy service is not registered it may need to be restarted. If the proxy service handlers are busy and not accepting new connections more of them may need to be started to handle the load.