The Overview page provides a process guide for the OceanBase console and displays information such as resource overview, capacity diagnosis, and SQL diagnosis.
Concepts
ApsaraDB for OceanBase has two main types of database instances: cluster instances and tenant instances.
Cluster instance: In ApsaraDB for OceanBase, a cluster instance is an OceanBase database that includes its required resources. It is associated with cloud resources such as server nodes and a virtual private cloud (VPC).
Tenant instance: A tenant instance is a compute resource that is virtually isolated from a large cluster using OceanBase's unique tenant isolation technology. It functions as an independent database instance. Within a tenant instance, you can create databases and tables to serve your applications.
For more information about the differences between cluster and tenant instances, see Instance types.
View the Overview page
Log on to the OceanBase Management Console . In the navigation pane on the left, click Overview.
Process guide
The process guide appears when you first open the Overview page.
The guide describes the process of using the console, which includes creating an instance, creating a tenant, creating a database, and using the database.
When you log on to the OceanBase console and open the Overview page again, you can click the 
icon in the upper-right corner to view the process guide.
Step | Operation | Description |
1 | Create an instance | Instances of various specifications are available for purchase. One-click scale-out and scale-in are supported. For more information, see Purchase an instance. |
2 | Create a tenant | Create a tenant in a cluster instance. A tenant is a logical concept that serves as a unit for resource allocation. For more information, see Create a tenant. |
3 | Create a database | Create a database within a tenant to connect to your applications. For more information, see Create a MySQL database. You do not need to create a database for an Oracle tenant. |
4 | Use the database | Use tools such as data migration and data development to work with your OceanBase database. |
Resource information
On the Overview page, you can view global resource data. This data includes a resource overview, capacity diagnosis, and the distribution of instances across regions.
Item | Description |
Resource Overview | Click the Resource Overview tab to view the following resource information.
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Capacity Diagnosis | Click the Capacity Diagnosis tab to view the following capacity diagnosis information.
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Data monitoring
The Overview page displays global SQL diagnosis information from the last 6 hours. This information includes the total number of suspicious and slow SQL statements and a list of clusters that contain these statements. You can click an instance name to go to the autonomy center page for that instance and view the quick diagnostics details.
