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Troubleshooting - Heartbeat failed to connect to standby (Doc ID 1432367.1)

Last updated on AUGUST 04, 2018

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 9.2 to 12.1]
Information in this document applies to any platform.
***Checked for relevance on 20-Aug-2013***
***Checked for relevance on 26-OCT-2016***


The Purpose of this Document is to troubleshoot the generic Error

Heartbeat failed to connect to standby

in the Primary ALERT.LOG. It shows most common and possible Causes along with Solutions to get rid of this Problem.

The Errors in general look like this:

PING[ARCn]: Heartbeat failed to connect to standby '<Standby>'. Error is xxxxx


ORA-3135 :The Communication between the ARCn and the RFS-Process died unexpectedly

ORA-12514 : The Standby Database is down or the specified Service you want to connect to is not registered with Listener on the Standby Site


Many more Common errors described in this document.

Troubleshooting Steps

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In this Document
Troubleshooting Steps

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