6 Configuring Networks for Oracle Database

If you install Oracle Databases on servers with multiple Oracle homes, multiple aliases, or without a static IP address, then review these network configuration topics.

If you are installing Oracle Database on a server with a static host name and IP address and at least one network interface, then no special network configuration is required.

• About Oracle Database Network Configuration Options
  You can enable database clients to connect to servers associated with multiple IP addresses, and you can install Oracle Database on servers with no network connections, and set up database services after installation.
• About Assigning Global Database Names During Installation
  The database name input field is used to set the DB_NAME, DB_UNIQUE_NAME, and DB_DOMAIN Oracle initialization parameter values.
• Network Configuration for Computers Completed After Installation
  You must confirm that a non-networked computer can connect to itself to ensure that you can configure client network resolution after installation. A non-networked computer is a computer that does not have a fixed network address, such as a computer using DHCP.
• Network Configuration for Multihome Computers
  You must set the ORACLE_HOSTNAME environment variable to install Oracle Database on a multihomed computer. A multihomed computer is associated with multiple IP addresses.
• Setting the ORACLE_HOSTNAME Environment Variable
  Run the commands shown in this example as the Oracle user account to set the ORACLE_HOSTNAME environment variable.
• Network Configuration for Computers with Multiple Aliases
  You must set the ORACLE_HOSTNAME environment variable to install Oracle Database on a multialias computer. A multialias computer is one to which multiple aliases resolve.