Oracle always reads a minimum of 64 KByte blocks on the physical level under UNIX. So, if DB_BLOCK_SIZE is 8192 Bytes, DB_FILE_MULTIBLOCK_READ_COUNT should be 8 (8 * 8192 = 64K) Does anyone know what the appropriate value for DB_FILE_MULTIBLOCK_READ_COUNT under WinXP should be, when DB_BLOCK_SIZE is 8192 Bytes? TIA!