Supported Shapes
An OCI Database with PostgreSQL database system uses a shape, or template, to configure hardware options, such as the number of OCPUs, the amount of memory, and other resources that are allocated to an instance, or database node.
When creating a database system or a configuration, you specify its shape. If you evaluate costs or peak workloads after creating the database system, and its initial shape doesn't meet your requirements, you can update the shape of the database system.
You can select flexible shapes or fixed shapes for a database system.
Flexible Shapes
A flexible shape is a shape that lets you customize the number of OCPUs and the amount of memory for a database system or configuration.
When a database system uses a flexible shape, its configuration must also support flexible shapes.
| Shape | Minimum OCPUs | Maximum OCPUs | Minimum Memory | Maximum Memory |
|---|---|---|---|---|
| PostgreSQL.VM.Standard3.Flex | 2 | 32 | 32 GB or a value matching the number of OCPUs, whichever is greater | 64 GB per OCPU, up to 512 GB total |
| PostgreSQL.VM.Standard.E4.Flex | 2 | 64 | 32 GB or a value matching the number of OCPUs, whichever is greater | 64 GB per OCPU, up to 1024 GB total |
Fixed Shapes
| Shape | OCPUs | RAM (GB) | Maximum Network Bandwidth |
|---|---|---|---|
| PostgreSQL.VM.Standard.E4.Flex.2.32GB | 2 | 32 | 2 Gbps |
| PostgreSQL.VM.Standard3.Flex.2.32GB | 2 | 32 | 2 Gbps |
| PostgreSQL.VM.Standard.E4.Flex.4.64GB | 4 | 64 | 4 Gbps |
| PostgreSQL.VM.Standard3.Flex.4.64GB | 4 | 64 | 4 Gbps |
| PostgreSQL.VM.Standard.E4.Flex.8.128GB | 8 | 128 | 8 Gbps |
| PostgreSQL.VM.Standard3.Flex.8.128GB | 8 | 128 | 8 Gbps |
| PostgreSQL.VM.Standard.E4.Flex.16.256GB | 16 | 256 | 16 Gbps |
| PostgreSQL.VM.Standard3.Flex.16.256GB | 16 | 256 | 16 Gbps |
| PostgreSQL.VM.Standard.E4.Flex.32.512GB | 32 | 512 | 32 Gbps |
| PostgreSQL.VM.Standard3.Flex.32.512GB | 32 | 512 | 32 Gbps |
| PostgreSQL.VM.Standard.E4.Flex.64.1024GB | 64 | 1024 | 40 Gbps |
Run the ListShapes operation or
oci psql shape-summary list-shapes command to list available shapes.