Table of Contents Table of Contents Title and Copyright Information Preface Use Case Scenario for this Document Documentation Accessibility 1 Upgrading Multitenant Architecture Sequentially Using Unplug-Plug About Upgrading Pluggable Databases (PDBs) Sequentially 2 Upgrading Pluggable Databases Sequentially Unplugging the Earlier Release PDB from the Earlier Release CDB Plugging in the Earlier Release PDB to the Later Release CDB Upgrading the Earlier Release PDB to the Later Release Use Inclusion or Exclusion Lists for PDB Upgrades