Re: standby and Oracle licensing

Failover: Nodes are configured in "cluster" with the first installed node
acting as a primary node. If the primary node fails, one of the nodes in
the cluster acts as the primary node. In this type of environment, Oracle
permits licensed Oracle Database customers to run the Database on an
unlicensed spare computer for up to a total of ten separate days in any
given calendar year. Any other use requires the environment to be fully
licensed. Additionally, the same metric must be used when licensing the
databases in a failover environment.

This is one database, mounted by only one instance at a time. Other node is idle or is doing something else, not Oracle DB stuff. When the primary node fails, you (or cluster software) mounts the storage to other node and you can start up the instance there. You can the instance there for 10 days per year w.o. additional licences.

. Standby: One or many copies of the primary database are maintained on
separate server(s) at all times. These systems are configured for disaster
recovery purposes. If the primary database fails, the standby database is
activated to act as the new primary database. In this environment, the
primary and the standby databases must be fully licensed. Additionally,
the same metric must be used when licensing the databases in a standby
environment.

This is two copies of the same database. One is active and running on primary node, other is just a copy of primary applying archivelogs coming for primary. Despite any failover or no failover Oracle is running on both nodes all the time, so you need licenses for both nodes as well.

Tanel.

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