In-Memory 是额外成本选项吗？ （甲骨文）

Question

我是一名空间数据分析师，正在尝试了解 Oracle 18c 中 pre-computing columns 的选项。

我最近了解到 Oracle 的 In-Memory 技术是一个可能的选择：

Oracle 21c - Database In-Memory Support by Oracle Spatial

Spatial supports the use of Oracle Database In-Memory technology.

You can enable a spatial table for use with Database In-Memory by adding virtual columns, and then use operators such as SDO_FILTER to query that table without using a spatial index.

问题：

In-Memory 是 Oracle 的额外成本附加组件吗？或者它是否作为标准功能包含在 Oracle 18c Enterprise 的所有实施中？

我尝试在 Oracle In-Memory community 中提问，但没有得到回复。

Answer 1

要回答此类问题，请查看 Database Licensing Information User Manual。

关于 18c 中的 In-Memory 这有什么要说的：

Oracle Database In-Memory ... EE and EE-ES: Extra cost option

是的，这是额外费用。 From 19.8 there is the Database In-Memory Base Level feature。这包括 In-Memory 受以下限制的企业版访问权限：

Allows you to experiment with Oracle Database In-Memory features without purchasing the Oracle Database In-Memory option. The following restrictions apply:

• The size of the In-Memory area (INMEMORY_SIZE) cannot exceed 16 GB for a CDB. In an Oracle RAC environment, the size is limited to 16 GB for each instance.
• The compression level for all objects and columns is automatically and transparently set to QUERY LOW.
• The Automatic In-Memory feature is disabled.
• In-Memory Column Store feature tracking is tracked for "In-Memory Base Level" rather than "In-Memory Column Store."
• The CellMemory feature is disabled for Oracle Exadata.

如果您使用的是 18c，请注意输入的是 Sustaining Support on 30th June 2021。为了保持支持，您真的应该升级到 19c。