Complete configuration tasks after you install Oracle Database.

Oracle recommends that you complete additional tasks immediately after installation. You must also complete product-specific configuration tasks before you use those products.

• Using Oracle9i Language and Definition Files with Oracle Database 12c
  Changes are made to the content of some of the language and territory definition files in Oracle Database 10g and later releases.
• Downloading and Installing Patch Updates
  Download and install patch dates for your Oracle software after you complete the installation.
• Requirements for Database Password
  To secure your database, every password must satisfy the Oracle recommended password requirements, even the passwords for predefined user accounts.
• Downloading and Installing the ORAchk Health Check Tool
  Download and install the ORAchk utility to perform proactive heath checks for the Oracle software stack.
• Recompiling Invalid Objects on Windows Systems
  Run the utlrp.sql script after you install, patch, or upgrade a database, to identify, and recompile invalid objects.
• Configuring the Secure Sockets Layer
  Oracle highly recommends that you configure and use a Secure Sockets Layer (SSL) to ensure that passwords and other sensitive data are not transmitted in clear text in HTTP requests.
• Configuring Oracle Components
  Many Oracle products and options must be configured before you use them for the first time.
• Creating a Fast Recovery Area Disk Group
  During installation, by default you can create multiple disk groups.
• Enabling and Disabling Database Options After Installation
  When you install Oracle Database, some options are enabled and the others disabled. You can view the enabled Oracle Database options by querying the V$OPTION view using SQL*Plus.
• Changing the Oracle Home User Password
  Oracle Home User Control is a command-line utility that allows an administrator to update the password for an Oracle Home User.
• Postinstallation Tasks for SQL Developer
  Learn about the recommended postinstallation tasks for SQL Developer.