International Business Machines Corporation

Stewart Laundon Palmer

Jeffrey Mark Nick

David Arlen Elko

Dennis J Dahlen

Richard Pervin King

Wendell W Wilkinson

Audrey A Helffrich

James Thomas Rayfield

David Lars Ehnebuske

Ian D Simmonds

Barbara Jane Alspach McKee

Isabelle Marie Catherine Rouvellou

A method and apparatus for performing general integrity checks using rules in an application running on a data processing system. A point is identified at which a unit of work is to complete. The unit of work includes a plurality of participants. Responsive to determining that the unit of work is to complete, rules associated with each participant in the unit of work are obtained. Responsive to obtaining the rules, the rules obtained for each of the participants are run. Responsive to running the rules, the general integrity of the application state with respect to the unit of work is determined. Responsive to determining the general integrity of the application state, the unit of work is completed by committing it or aborting it.

Apparatus and method for performing general integrity checks using integrity rule checking points in an enterprise application

A method and apparatus for optimizing a data structure of an external data storage facility shared by a plurality of data processing systems, the data structure being allocated by a first allocation command which includes first allocation parameters based on an amount of storage space in the external data storage facility assigned for creation of the data structure and a composition of the data structure, includes a device for determining values of the first allocation parameters, to thereby determine a first composition of the data structure, a device for determining an actual usage of the data structure, to thereby determine a second composition of the data structure, a device for comparing the first composition of the data structure with the second composition of the data structure, and a device for issuing, based on an output from the comparing device, a second allocation command having second allocation parameters, to the data structure for reallocation thereof. The issuing device includes a device for adjusting the first composition of the data structure to the second composition, as storage space in the external data storage facility and processing cycles become available to execute the second allocation parameters. Until the second allocation parameters are achieved, the reallocation of the data structure remains pending and all processing commands are accepted and processed by the external data storage facility.

Method and apparatus for expansion, contraction, and reapportionment of

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Yorktown Heights, NY, United States of America

Stewart Laundon Palmer