The Oracle MAA Bronze reference architecture provides basic database service at the lowest possible cost. A reduced level of high availability and data protection is accepted in exchange for reduced cost and implementation complexity. This architecture may be suitable for databases used for test, development, and less critical production applications and databases.
MAA Bronze uses the high availability capabilities included in Oracle Database Enterprise Edition. Bronze defaults to the Oracle Database single-instance or multitenant architecture. Oracle Restart or Oracle Clusterware high availability capabilities are used to restart a failed instance, database server, or any relevant managed service. For logical corruptions such as human error, you can use Flashback operations to "rewind" the database to a specific point in time. In the worst-case scenario of a complete site outage, there is additional time required to restore and recover the system and database from backups which may result in hours or days of downtime.
In MAA Bronze, a local backup within the same data center is always recommended for the fastest recovery. Oracle also recommends maintaining a second copy of backups in a remote data center to protect against site outages and disasters. You can use Oracle Cloud Database Backup Service to maintain a cloud-based backup of on-premises databases.
As shown in the table below, the MAA Bronze level of service illustrates the tradeoff between reduced implementation and maintenance costs, and expected downtime during planned and unplanned outages.
| Unplanned Outage | RTO/RPO Service Level Objectives1 |
|---|---|
| Recoverable node or instance failure | Minutes to hour |
| Disasters: corruptions and site failures | Hours to days RPO since last backup or near zero with Recovery Appliance |
| Planned Maintenance | |
| Software/hardware updates | Minutes to hour |
| Major database upgrade | Minutes to hour |
1RPO is zero unless explicitly specified
For more information about Oracle capabilities used in this MAA reference architectures, click the graphic above, or click Next.
Learn more about Oracle MAA blueprints for reduced planned and unplanned downtime for Oracle Database on-premises, on Exadata Database Machine, and on Oracle Cloud.