Shared-memory use

The database server uses shared memory to enable virtual processors and utilities to share data and to provide a fast communications channel for local client applications that use IPC communication.

The following figure illustrates the shared-memory scheme.
Figure 1. How the database server uses shared memory
This figure shows Virtual Processor A and Virtual Processor B using shared memory to share data. Both virtual processors have memory space for program text and private data and memory space that is not allocated.

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