Starting in Oracle Database 12c Release 2 (12.2), an application container is an optional, user-created container that stores data and metadata for one or more application models.
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An application (also called an application model) is a named, versioned set of common data and metadata stored in the application root. For example, the application model might include definitions of tables, views, user accounts, and PL/SQL packages that are common to a set of PDBs.
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In some ways, an application container functions as an application-specific CDB within a CDB. An application container, like the CDB itself, can include multiple application PDBs, and enables these PDBs to share metadata and data.
For example, a SaaS deployment can use multiple application PDBs, each for a separate customer, which share application metadata and data. For example, in the following figure, sales_app is the application model in the application root. The application PDB named cust1_pdb contains sales data only for customer 1, whereas the application PDB named cust2_pdb contains sales data only for customer 2. Plugging, unplugging, cloning, and other PDB-level operations are available for individual customer PDBs.
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Figure 1-4 SaaS Use Case
Description of “Figure 1-4 SaaS Use Case”
See also
Oracle Multitenant Administrator’s Guide for an overview of application containers
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