| 摘要 |
MVS mainframe computer systems employ the ICF (Integrated Catalog Facility) catalog environment to manage numerous data sets. To provide nearly continuous availability of those data sets, the BCS catalog ( 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 ) can be 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 catalog ( 324 ) without sorting, thereby reducing downtime.
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