In Oracle8, you can configure a new system global area (SGA) called the large pool.
		Configuration of the large pool is optional; if configured, the RDBMS uses the memory for the following:
			Session memory (User Global Area (UGA) memory) for MTS or Extended Architecture (XA)
			I/O slaves
			Oracle backup and restore
		The large pool was created to allow the RDBMS to request large memory allocations from a separate pool and to prevent competition with other subsystems for the same memory. As the RDBMS allocates more shared pool memory for the MTS session memory, the amount of shared pool memory available for the shared SQL cache decreases. By allocating session memory from another area of shared memory, the RDBMS can use the shared pool primarily for caching shared SQL and not incur the performance overhead from shrinking the shared SQL cache.
		For I/O slaves and Oracle backup and restore, the RDBMS allocates buffers that are a few hundred kilobytes in size. The shared pool cannot satisfy this request; the large pool can.
		The large pool does not have an least recently used (LRU) list.