Hi Clive,
I have a blog post about it.
Please read ->  
https://ermanarslan.blogspot.com/2016/06/ebs-122-road-map-and-high-level-action.htmlSpecially read the part named "References if DR and H/A need to be implemented: "
Reference Figure 8-1 shows a sample Oracle Fusion Middleware 11g Oracle Identity Management high availability architecture from the Fusion Middleware High Availability Guide at the URL: 
https://docs.oracle.com/cd/E28280_01/core.1111/e10106/imha.htm#ASHIA804 
8.2 Prerequisites for Oracle Identity Management High Availability Configuration 
https://docs.oracle.com/cd/E28280_01/core.1111/e10106/imha.htm#ASHIA3047 
8.3 Oracle Internet Directory High Availability 
https://docs.oracle.com/cd/E28280_01/core.1111/e10106/imha.htm#ASHIA806 
8.3.3.3 Configuring Oracle Internet Directory With a WebLogic Domain 
8.3.3.3.1 Configuring Oracle Internet Directory on OIDHOST1
This section describes the steps to deploy Oracle Internet Directory in a high availability configuration as part of a WebLogic Server domain. 
8.3.3.3.3 Configuring Oracle Internet Directory on OIDHOST2 
Ensure that the Oracle Internet Directory repository is running and then follow these steps to configure the Oracle Internet Directory instance on OIDHOST2: 
On the second node, you will be extending the domain using config.sh tool.
The following document is for Active-Passive solution: 
12 Active-Passive Topologies for Oracle Fusion Middleware High Availability 
Fusion Middleware High Availability Guide 
http://docs.oracle.com/cd/E28280_01/core.1111/e10106/ap.htm#ASHIA3205The following document is for DR solution:
Fusion Middleware Disaster Recovery Guide 
1.2.1 Oracle Fusion Middleware Disaster Recovery Architecture Overview 
http://docs.oracle.com/cd/E28280_01/doc.1111/e15250/intro.htm#ASDRG106 
The Oracle Fusion Middleware Disaster Recovery solution supports these methods of providing data protection for Oracle Fusion Middleware data and database content: 
- Oracle Fusion Middleware product binary files, configuration files, and metadata files 
Use storage replication technologies. 
- Database content 
Use Oracle Data Guard for Oracle databases (and vendor-recommended solutions for thirdparty databases)
Also  note the following in "
http://docs.oracle.com/cd/E28280_01/doc.1111/e15250/creating_sites.htm#ASDRG512" ->
4.5.6.1 Using rsync and Oracle Data Guard for Oracle Fusion Middleware Disaster Recovery Topologies