Oracle 19c Enhancements for Multitenant Architecture

 
Oracle 19c introduces several important updates to enhance multitenant functionality. Some of the most notable improvements include:

• Automatic PDB Relocation: Oracle 19c introduces automatic relocation of pluggable databases, which can help organizations balance workloads more effectively. This feature simplifies resource management and ensures that databases are running on the most optimal physical infrastructure.

• Plug-in and Plug-out for Pluggable Databases: In Oracle 19c, the process of plugging and unplugging PDBs is simplified. You can now migrate and transport PDBs between CDBs with minimal downtime and effort.

• PDB Snapshot Copies: Oracle 19c allows users to create snapshot copies of pluggable databases, which can be used for backup, testing, or staging. This feature enhances the ability to perform data recovery and testing without affecting the production environment.

• Enhanced Data Guard Support for Multitenant Environments: Oracle 19c improves support for multitenant environments in Data Guard. This feature ensures high availability by replicating the entire container database, including all its pluggable databases, to a standby system.

Use Cases for Oracle 19c Multitenant Architecture

1. Database Consolidation for Enterprises

   • Large enterprises often have hundreds or thousands of databases to manage. Oracle’s multitenant architecture allows businesses to consolidate databases from different departments, regions, or business units into fewer, more efficient instances. This reduces operational complexity and IT overhead while providing better resource utilization.

2. Cloud Deployments

   • Oracle multitenant architecture is particularly useful in cloud environments, where elasticity and scalability are key. It allows businesses to quickly spin up new databases for applications in the cloud while sharing resources across multiple databases. This ensures a cost-effective, flexible cloud strategy.

3. Testing and Development Environments

   • Developers and testers can use pluggable databases as isolated environments for testing applications, experimenting with different configurations, or staging new versions. By using PDB cloning, developers can quickly create copies of production databases for testing with minimal storage overhead.

4. SaaS Providers

   • SaaS providers can use Oracle’s multitenant architecture to host multiple customers’ databases in the same container database. Each customer gets a fully isolated, independent database (PDB), but the service provider benefits from resource sharing and centralized management.