Unisys Corporation

Matthew E Trautman

Michael J Rieschl

Douglas A Fuller

James F Merten

Edward C Fisher

John Loberg

Linda J Brock

A method includes retrieving, by a processor, a first entry from a global wait list as a current waiting lock. The method further includes decreasing, by the processor, a deadlock timer of the current waiting lock. The method further includes determining, by the processor, whether the deadlock timer equals zero. The method further includes appending, by the processor, the current waiting lock to an end of a deadlock victim selection list, if the deadlock timer equals zero. The method further includes selecting, by the processor, a victim from the deadlock victim selection list.

Systems and methods for implementing a multi-host record lock deadlock feedback mechanism

Systems and methods for obtaining access to a database file managed by an operating system in a computing system are disclosed. One method includes transmitting a call to an operating system from a database management system, the call requesting access to a database file. The method also includes receiving an address from the operating system at the database management system. The address represents a general address of the database file managed by the operating system. The method further includes transmitting a call to the operating system from the database management system, which includes an address and a size of a view of the database file to be created. The method also includes receiving an address of the view of the database file from the operating system.

Data expanse viewer for database systems

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Roseville, MN, United States of America

Matthew E Trautman