20.1 Before You Begin

Read the following chapters before beginning the steps documented in this sequence for an understanding of Multi-Data Center and its features.

Confirm the following before you begin the Multi-Data Center set-up sequence.

  • Check that your operating system is up-to-date with all necessary patches applied.

  • Mount the binaries you will be using. The applicable Oracle software includes:

    • Oracle Fusion Middleware Identity and Access Management 11g (

    • Oracle WebLogic Server 10g (10.3.6)

    • Oracle Database 11g (

    • Oracle Fusion Middleware Repository Creation Utility 11g (

  • Add /etc/hosts entries on all four nodes being configured.

  • Verify that the Oracle Database is connected and accessible.

  • Verify that each machine has more than 30 GB space available and more than 8GB of memory available.