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.

• Understanding Multi-Data Centers

• Configuring Multi-Data Centers

• Synchronizing Data In A Multi-Data Center

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 (11.1.2.3.0)

  • Oracle WebLogic Server 10g (10.3.6)

  • Oracle Database 11g (11.2.0.4)

  • Oracle Fusion Middleware Repository Creation Utility 11g (11.1.2.3.0)

• 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.