International Business Machines Corporation

Donald Prentiss Terry

Gregory Walter Vance

Karen Alicia Ranson

Lokesh M Gupta

Matthew J Kalos

Michael T Benhase

Beth Ann Peterson

Susan Kay Candelaria

Joseph S Hyde, Ii

Chung Man Fung

Vern Lee Watts

David Wayne Moore

Lawrence Edward Sullivan

Exemplary methods, computer systems, and computer program products for fabricating key fields by a processor device in a computer environment are provided. In one embodiment, the computer environment is configured for, as an alternative to reading Count-Key-Data (CKD) data in order to change the key field, providing a hint to fabricate a new key field, thereby overwriting a previous key field and updating the CKD data.

Fabricating key fields

An apparatus, system, and method are disclosed for providing parallel access to a data set configured for automatic recovery. The apparatus includes an access module, a conversion module, a recovery module, and a restore module. The access module establishes parallel access to a data set configured for 'pair and a spare' automatic recovery. The conversion module converts access to the data set from parallel access to single point access in response to an application instance detecting an error in the data set. The recovery module recovers the data set using an automatic recovery process initiated by the application instance that detects the error. The restore module restores access to the data set from single point access to parallel access in response to successful recovery of the data set. Providing parallel access to a data set configured for automatic recovery ensures that data transactions are performed swiftly, reliably, and efficiently.

Apparatus, system, and method for providing parallel access to a data set configured for automatic recovery

A method and apparatus for merging log data for recovering one or more database data sets to any point-in-time in a single pass of log data sets. Using disaster recovery technology, the invention may be implemented to provide a method to reduce the time that a broken database is unavailable by processing recovery input data in parallel and recovering multiple database data sets, including areas, simultaneously. The invention reduces operational complexity and resource constraints experienced by IMS customers trying to recover database data sets especially in a data sharing environment. The invention simplifies the recovery process by eliminating both the need for change accumulation and the need to run separate recovery jobs for each database data set requiring recovery, thereby reducing the impact of recovery on system resources.

Database recovery to any point in time in an online environment utilizing disaster recovery technology

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San Jose, CA, United States of America

Donald Prentiss Terry