PING[ARC1]: Heartbeat failed to connect to standby 'standby_nespets1'.12514

Question

Hi,
I have a 4 node 10.2.0.3.0 RAC on RHEL4, OCR files on OCFS2 and DB Files on ASM. Due to some issues, we have temporarily shut down 3 nodes of the cluster. we also have 2 physical standby databases for it. Today we had the following error in the alert log:
ORA-12514: TNS:listener does not currently know of service requested in connect descriptor
+PING[ARC1]: Heartbeat failed to connect to standby 'ONCRSDB'. Error is 12514.+
and after that, the whole server hanged. This happened 3 times and I had to cold reboot the server to access the prompt, then I decided to disable the log_archive_dest for that standby db. The standby dbs and primary db can tnsping each other.
Does anyone have any idea about that?

Answer 1

Start simply,analyze the listener error message:
ORA-12514: TNS:listener does not currently know of service requested in connect descriptor Cause: The listener received a request to establish a connection to a database or other service. The connect descriptor received by the listener specified a service name for a service (usually a database service) that either has not yet dynamically registered with the listener or has not been statically configured for the listener. This may be a temporary condition such as after the listener has started, but before the database instance has registered with the listener.
Action:
- Wait a moment and try to connect a second time.
- Check which services are currently known by the listener by executing: lsnrctl services <listener name>
- Check that the SERVICE_NAME parameter in the connect descriptor of the net service name used specifies a service known by the listener.
- If an easy connect naming connect identifier was used, check that the service name specified is a service known by the listener.
- Check for an event in the listener.log file.
Werner