Abstract: A system for satisfying a request from a client for a send-then-commit transaction includes a front-end information management system (IMS) server. Shared message queues (SMQ) communicate with the front-end IMS server and plural back-end IMS. The front-end IMS server receives the request from the client and transmits the request to the SMQ. A back-end IMS server accesses the SMQ and generates a transaction output in response to the request. The back-end IMS server transmits the result to the front-end IMS server and the front-end IMS server interfaces with the client to communicate the response thereto. The back-end IMS server and front-end IMS server operate in separate system images, but work together in a resource recovery services (RRS) environment to commit or backout the transaction output.

Abstract: A system for satisfying a request from a client for a send-then-commit transaction includes a front-end information management system (IMS) server. Shared message queues (SMQ) communicate with the front-end IMS server and plural back-end IMS. The front-end IMS server receives the request from the client and transmits the request to the SMQ. A back-end IMS server accesses the SMQ and generates a transaction output in response to the request. The back-end IMS server transmits the result to the front-end IMS server and the front-end IMS server interfaces with the client to communicate the response thereto. The back-end IMS server and front-end IMS server operate in separate system images, but work together in a resource recovery services (RRS) environment to commit or backout the transaction output.

Abstract: A system for satisfying a request from a client for a send-then-commit transaction includes a front-end information management system (IMS) server. Shared message queues (SMQ) communicate with the front-end IMS server and plural back-end IMS. The front-end IMS server receives the request from the client and transmits the request to the SMQ. A back-end IMS server accesses the SMQ and generates a transaction output in response to the request. The back-end IMS server transmits the result to the front-end IMS server and the front-end IMS server interfaces with the client to communicate the response thereto. The back-end IMS server and front-end IMS server operate in separate system images, but work together in a resource recovery services (RRS) environment to commit or backout the transaction output.

Abstract: A system for satisfying a request from a client for a send-then-commit transaction includes a front-end information management system (IMS) server. Shared message queues (SMQ) communicate with the front-end IMS server and plural back-end IMS. The front-end IMS server receives the request from the client and transmits the request to the SMQ. A back-end IMS server accesses the SMQ and generates a transaction output in response to the request. The back-end IMS server transmits the result to the front-end IMS server and the front-end IMS server interfaces with the client to communicate the response thereto. The back-end IMS server and front-end IMS server operate in separate system images, but work together in a resource recovery services (RRS) environment to commit or backout the transaction output.

Abstract: A method, apparatus, and article of manufacture for accessing a database. A hierarchical database system is modeled into an objects framework, wherein the objects framework corresponds to one or more application views, database definitions, and data defined and stored in the hierarchical database system. The objects framework also provides mechanisms for accessing a relational database system, wherein the objects framework provides industry-standard interfaces for attachment to the relational database system. Transactions from an application program for both the hierarchical database system and the relational database system are processed through the objects framework using message queue objects.

Abstract: A shared queue is provided to allow any of a plurality of systems to process messages received by clients of a data processing environment. A received message is enqueued onto the shared queue. Any of the plurality of systems having available processing capacity can retrieve the message from the shared queue and process the message. A response to the message, where appropriate, is enqueued onto the shared queue for delivery back to the client. A unique list structure is provided to implement the queue. The list structure is comprised of a plurality of sublists, or queue types. Each queue type is divided into a plurality of list headers. List entries, containing data from the received messages, are chained off of the list headers. A common queue server is used to interface to the queue and to store messages thereon. The common queue server stores message data in storage buffers, and then transfers this data to the list entries. Thus, common queue server coordinates the enqueuing of data onto the shared queue.

Abstract: A shared queue is provided to allow any of a plurality of systems to process messages received by clients of a data processing environment. A received message is enqueued onto the shared queue. Any of the plurality of systems having available processing capacity can retrieve the message from the shared queue and process the message. A response to the message, where appropriate, is enqueued onto the shared queue for delivery back to the client. A unique list structure is provided to implement the queue. The list structure is comprised of a plurality of sublists, or queue types. Each queue type is divided into a plurality of list headers. List entries, containing data from the received messages, are chained off of the list headers. A common queue server is used to interface to the queue and to store messages thereon. The common queue server stores message data in storage buffers, and then transfers this data to the list entries. Thus, common queue server coordinates the enqueuing of data onto the shared queue.

Abstract: A computer program product comprising a computer useable medium having computer program logic recorded on it for enabling a processor in a computer system to interact with a shared storage medium comprising a ready queue is described and a staging queue. The computer program logic enables the processor to determine whether a data object is larger than available storage capacity of a working storage associated with an application. A public key is associated with the data object and is available to all applications.

Abstract: A system and method for interacting with a shared storage medium comprising a ready queue and a staging queue is described. To store a data object, whether the data object is larger than available storage capacity of a working storage associated with an application is first determined. If the data object is larger than available storage capacity of the working storage, then a private key for the data object is generated. The application then divides the data object into N segments, and causes segments 2 through N to be stored in the staging queue via the working storage. The private key is stored with each of segments 2 through N in the staging queue. Then, the application causes segment 1 of the data object, the public key, and the private key to be stored in the ready queue. To retrieve a data object, an application causes a record having a public key stored therein to be retrieved from the ready queue. Stored in the record are at least a portion of a data object and a private key.

Abstract: Described herein is a computer program product comprising a computer useable medium having computer program logic recorded thereon for enabling a processor in a computer system to manage a plurality of data structures stored in a computer storage medium. The computer storage medium includes a primary storage medium and an overflow storage medium. The computer program logic enables the processor to receive a request to store a data object in a target data structure, and enables the processor to determine whether an overflow mode condition currently exists. If it is determined that an overflow mode condition does not currently exist, then the computer program product enables the processor to determine whether a combined size of all data structures stored in the primary storage medium plus a size of the data object is greater than a predetermined threshold.