Abstract: A method and apparatus managing online transaction using a computer system are disclosed. According to the present invention, a target request is received by a CPU coupled to a main memory and a memory application co-processor via a memory bus. The CPU then stores the target request onto the memory application co-processor coupled to a storage class memory. The memory application co-processor then locates target contents, inside the storage class memory, where the target key-word is specified in the target request. The CPU or a coupled device then accesses the target contents associated with the target key-word inside the storage class memory directly without copying the target contents associated with the target key-word inside the storage class memory to or from the main memory.

Abstract: A method and apparatus of bad location management for storage class memory are disclosed. A nonvolatile memory is partitioned into a non-reserved space and a reserved space, which are divided into multiple data units. The health status of the data units in the non-reserved space are classified into multiple classes including a mostly-good class. For host data read, the data from a mostly-good data unit are read and whether the data includes a pointer is checked. If no pointer, the data read are returned as the host data. Otherwise, the data unit pointed by the pointer is read. For data write, the data from a mostly-good data unit are read. If no pointer in the read data, the host data are written into the mostly-good data unit. Otherwise, the host data are written into the data unit in the reserved space pointed by the pointer.