1. Multi-Tenant Deployment
  2. Oracle Multi Tenant Architecture
  3. Application Maintenance
  4. Application Upgrade

1.2.2 Application Upgrade

An application upgrade is a major change to an installed application.

Typically, an upgrade changes the physical architecture of the application. For example, an upgrade might add new user accounts, tables, and packages, or alter the definitions of existing objects.

To upgrade the application, you must specify the following in the ALTER PLUGGABLE DATABASE APPLICATION statement:
  • Name of the application
  • Old application version number
  • New application version number
During an application upgrade, the application remains available. To make this availability possible, Oracle Database clones the application root.
The following figure gives an overview of the application upgrade process.
  1. Before Upgrade

    Figure 1-2 Before Upgrade


    Description of Figure 1-2 follows
    Description of "Figure 1-2 Before Upgrade"

  2. Begin Upgrade

    Figure 1-3 Begin Upgrade


    Description of Figure 1-3 follows
    Description of "Figure 1-3 Begin Upgrade"

  3. End Upgrade

    Figure 1-4 End Upgrade


    Description of Figure 1-4 follows
    Description of "Figure 1-4 End Upgrade"

  4. After Synchronization

    Figure 1-5 After Synchronization


    Description of Figure 1-5 follows
    Description of "Figure 1-5 After Synchronization"

Parent topic: Application Maintenance