Abstract:
In a workload managed system comprising a plurality of server processes each capable of supporting a given program entity, such as an Enterprise JavaBeansTM specified stateful session bean, a stateful session bean instance is passivated, by writing it to a bean store, on completion of a unit of work. On next use the session bean is reactivated, by reading it from the bean store, in any one of the plurality of servers thereby allowing workload management for stateful session beans. A routing table is maintained, in non-volatile mass storage, that contains location information for units of work and stateful session bean instances, used to maintain unit of work-server affinity for the lifetime of the unit of work. Stateful session beans instances are associated with ID keys that include a flag that is used to indicate whether or not the routing table contains location information for the bean instance.
Abstract:
In a workload managed system comprising a plurality of server processes each capable of supporting a given program entity, such as an Enterprise JavaBeans(TM) specified stateful session bean, a stateful session bean instance is passivated, by writing it to a bean store, on completion of a unit of work. On next use the session bean is reactivated, by reading it from the bean store, in any one of the plurality of servers thereby allowing workload management for stateful session beans. A routing table is maintained, in non-volatile mass storage, that contains location information for units of work and stateful session bean instances, used to maintain unit of work-server affinity for the lifetime of the unit of work Stateful session beans instances are associated with ID keys that include a flag that is used to indicate whether or not the routing table contains location information for the bean instance.
Abstract:
The system and method of this invention gives an application running on an operating system the ability to communicate through the network protocols of a network architecture such as SNA. The network architecture is placed within the file structure of the operating system. The application accesses the network architecture through a device driver. The network architecture device driver is called through the operating system's calls as if it were a file contained within the file directory of the operating system. In this way, access to the network architecture supports the sequential I/O model of the operating system.
Abstract:
The system and method of this invention gives an application running on an operating system the ability to communicate through the network protocols of a network architecture such as SNA. The network architecture is placed within the file structure of the operating system. The application accesses the network architecture through a device driver. The network architecture device driver is called through the operating system's calls as if it were a file contained within the file directory of the operating system. In this way, access to the network architecture supports the sequential I/O model of the operating system.