Sobre os locais de instalacao

• ORACLE_BASE: This environment variable and related directory path refers to the base directory under which Oracle products are installed.
  
• MW_HOME: This environment variable and related directory path refers to the location where Oracle Fusion Middleware resides. A MW_HOME has a WL_HOME, a ORACLE_COMMON_HOME and one or more ORACLE_HOMEs.
  
• WL_HOME: This environment variable and related directory path contains installed files necessary to host a WebLogic Server.
  
• ORACLE_HOME: This environment variable and related directory path refers to the location where Oracle Fusion Middleware Identity Management is installed.
  
• ORACLE_COMMON_HOME: This environment variable and related directory path refers to the location where the Oracle Fusion Middleware Common Java Required Files (JRF) Libraries and Oracle Fusion Middleware Enterprise Manager Libraries are installed.
  
• DOMAIN directory: This directory path refers to the location where the Oracle WebLogic domain information (configuration artifacts) is stored. Different WebLogic Servers can use different domain directories even when in the same node as described Section 2.4.2, "Recommended Locations for the Different Directories."
  
• ORACLE_INSTANCE: An Oracle instance contains one or more system components, such as Oracle Web Cache, Oracle HTTP Server, or Oracle Internet Directory. An Oracle instance directory contains updateable files, such as configuration files, log files, and temporary files.