1
Dennis S DeLorme, Mark L Holm, Wilson D Lee, Peter B Passe, Gary R Ricard, George D Timms Jr, Larry W Youngren: Database index journaling for enhanced recovery. International Business Machines Corporation, Bradley A Forrest, April 4, 1989: US04819156 (113 worldwide citation)

A quick recovery of logical files which provide alternate views of databases is provided. Unchanged logical file pages are journaled before being changed. Transactions affecting databases covered by the logical files are also journaled. To recover a logical file, the journaled unchanged pages of the ...


2
Michael L Nordstrom, Gary R Ricard, John J Vriezen, David R Welsh, Larry W Youngren: High concurrency in use manager. International Business Machines Corporation, Andrew J Dillon, November 23, 1993: US05265245 (66 worldwide citation)

An in use table manager in a computer system uses an in use table to track the use of files, or objects. The in use table is used to determine which objects may need recovery in the event of a system failure. Object addresses are hashed by the in use manager to identify a preferred slot in the table ...


3
Mark J Anderson, Richard L Cole, William S Davidson, Wilson D Lee, Peter B Passe, Gary R Ricard, Larry W Youngren: Index key range estimator. International Business Machines Corporation, Bradley A Forrest, September 27, 1988: US04774657 (40 worldwide citation)

A key estimator estimates the number of keys over a key range defined by key endpoints in an index to a data space. The number of keys in the key range required to be processed for a particular operation is estimated as a function of the number of pages referenced during a range level limited search ...


4
Michael J Corrigan, Gary R Ricard, Richard M Rocheleau, Larry W Youngren: Optimized I/O buffers having the ability to increase or decrease in size to meet system requirements. International Business Machines Corporation, Curtis G Rose, Steven W Roth, January 12, 1993: US05179662 (38 worldwide citation)

Optimization I/O buffers are used to write data into or read data from auxiliary storage using a double buffering scheme. When a user wants to send data to auxiliary storage, the first buffer is filled with data and the contents are asynchronously written to auxiliary storage. Without waiting for th ...


5
David L Hermsmeier, Gary R Ricard, John J Vriezen, Larry W Youngren: System managed logging of objects to speed recovery processing. International Business Machines Corporation, Owen J Gamon, April 29, 1997: US05625820 (22 worldwide citation)

System control over the logging of objects in order to meet the user specified recovery requirements. Under the fixed recovery time environment, the user chooses a length of time to be spent on object recovery, and the system dynamically manages the logging of objects to meet this time. The shorter ...


6
David L Hermsmeier, Gary R Ricard, John J Vriezen, Larry W Youngren: System managed logging of objects to speed recovery processing. International Business Machines Corporation, Owen J Gamon, November 12, 1996: US05574897 (21 worldwide citation)

System control over the logging of objects in order to meet the user specified recovery requirements. Under the fixed recovery time environment, the user chooses a length of time to be spent on object recovery, and the system dynamically manages the logging of objects to meet this time. The shorter ...



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