Buffers
The Unload function uses one set of buffer pools.
These buffer pools are allocated and dynamically tuned within the Unload function. You cannot specify keywords to tune buffers; however, you can use the BUFSPACE keyword to specify the maximum amount of buffer space to be used for the unload step. Each data set group in the database has its own buffer pool. The unit of allocation is always tracks. Storage for these buffer pools is obtained above the 16 MB line. A track full of blocks is read into the pool at one time; if this method is not efficient, one block at a time is read into the pool.
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