The overflow buffer is used to satisfy peak memory requirements for any heap in the instance Shared memory region whenever a heap exceeds its configured size.
每当某个堆超出了其配置的大小时，便可以使用溢出缓冲区来满足实例共享内存区内任何堆的峰值需求。
When contiguous chunks of the same data types are allocated, the memory region is known as a buffer.
在指派同一资料类型的相邻区块时，这块记忆体栏位称为缓冲区。
DB2 supports all the page sizes (4-kilobyte, 64-kilobyte, 16-megabyte, and 16-gigabyte) that are available with the underlying system for its buffer-pool-shared memory region.
DB 2支持缓冲池共享内存区域使用底层系统上可用的所有页面大小(4 KB、64 KB、16 MB和16 GB)。
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