The Recovery Appliance backup module must be installed in the following locations:

• In the Oracle home of every protected database that uses RMAN to backup protected databases to Recovery Appliance

  If a particular Oracle home is used by more than one protected database, then the backup module must be installed only once in this Oracle home.

• On every upstream Recovery Appliance that sends backups to downstream Recovery Appliances in replication environments

  The library for the Recovery Appliance backup module, libra.so, is preinstalled on Recovery Appliance. However, the Oracle wallet containing the replication user credentials must be created on the upstream Recovery Appliance.