Sebastian Solbach (DBA Community) wrote:Hi Sebastian
unfortunately you did not mention which Oracle version this is.
It seems your public network check is failing, hence the VIP gets relocated to the other node (where it still seems to be o.k.).
Depending on the used version, the VIP will not fallback by itself.
Why does the public network check fail?
Again there are different mechanism used per Oracle DB version.
Normally it indicates a problem with a network card, but since this is happening on both nodes, I more likely suggest, that you have a problem with the gateway (that it is temporarily not reachable), resulting in the failure of the VIP.