International Business Machines Corporation

Brian Johnson

Andrew Wright

David J Harman

Alan Clive Robinson

Mark W T Todd

David E Knibb

A determination is made as to whether one of a system definition file data set and a catalog data set is unavailable for orderly restart of an information system. The system definition file data set provides resource definition information for the information system and the catalog data set provides resource state information for the information system. A determination is made that the other of the system definition file data set and the catalog data set is available. The unavailable one of the system definition file data set and the catalog data set is reconstructed by rebuilding the system resource definition and state information used by the unavailable one of the system definition file data set and the catalog data set using system resource information within the other available one of the system definition file data set and the catalog data set.

Reconstruction of system definitional and state information

Embodiments of the invention relate to a method, system, and computer program product for validating a data structure, comprising: responsive to identifying a data structure in a first programming language, identifying an equivalent data structure in a second programming language; comparing a data definition of the data structure with a data definition of the equivalent data structure; determining an incompatibility between a compared data definition of the data structure and a compared data definition of the equivalent data structure; and responsive to determining an incompatibility, identifying a rule defining an action to be taken in order to correct the incompatibility.

Method for validating equivalent data structures

Embodiments of the present invention provide a method, system and computer program product for USING range validation during assembly of an assembly language program. In an embodiment of the invention, a method for USING range validation during assembly of an assembly language program has been provided. The method can include parsing assembler language source code loaded for assembly in an assembler executing in memory of a computer. The method also can include identifying a USING statement in the source code establishing a base address as the content of a register. Finally, in response to additionally identifying a subsequent statement in the source code that modifies the content of the register, a warning of an invalid USING range can be generated.

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Winchester, United Kingdom

Brian Johnson