3 Utilizing the Multitenant Architecture in Oracle Database 12c or Later

This section outlines the installation choices and different scenarios associated with copying and moving pluggable databases introduced by the Oracle Database 12c or later multitenant architecture with respect to Oracle Application Express (Application Express).

Understanding the Installation Choices
Learn about the installation choices in Oracle Application Express.
Installing Application Express into Different PDBs
You can install different versions of Oracle Application Express into different PDBs.
Plugging in a PDB When Application Express is Installed in the Root Container
Learn about scenarios in which the target database has Application Express installed into the root container, CDB$ROOT - the default installation option.
Plugging in a PDB When Application Express Is Not in the Root Container of the Target CDB
The scenarios in this section describe when Application Express is not installed in the root container, CDB$ROOT, by explicitly removing it as described in Uninstalling Application Express 18.2 from a CDB.