Data processing: database and file management or data structures – Database design – Data structure types
Reexamination Certificate
2007-01-02
2007-01-02
Alam, Hosain (Department: 2166)
Data processing: database and file management or data structures
Database design
Data structure types
C707S793000
Reexamination Certificate
active
10783835
ABSTRACT:
MVS mainframe computer systems employ the ICF (Integrated Catalog Facility) catalog environment to manage numerous data sets. To provide 24×7 availability of those data sets, the BCS (250,270) must be re-organized while leaving the catalog open to access by applications. To perform a re-org while open, a data CI correlation table (500) is constructed (314) and used to lay the data CIs into a backup file in logical order (316), so that they can be loaded into the new BCS (324) without sorting, thereby reducing downtime. Additionally, if the BCS is damaged during normal operation, repair of the structure must also be performed to ensure that correct access is maintained to all data that is cataloged in the BCS. Throughout the re-org process, structural integrity checks are performed on the data and index component of the BCS, and if errors are encountered, they can be repaired.
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patent: 5649152 (1997-07-01), Ohran et al.
patent: 2003/0135478 (2003-07-01), Marshall et al.
International Search Report, PCT/US2005/005414, issued Apr. 27, 2006.
Sockut et al., “Database Reorganization-Principles and Practice”Computing Surveys, vol. 11, No. 4, Dec. 1979.
Ferguson Ronald K.
Hasegawa Martin K.
Pace Richard G.
Ahn Sangwoo
Alam Hosain
Mainstar Software Corporation
Stoel Rives LLP
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