While utilities available in the past were not designed as reorganization utilities, they are often used as major building blocks in a user-directed, multiple-utility approach to database reorganization.
CA IDMS/DB Reorg was designed specifically as a reorganization utility. It eliminates the need for a time-consuming complete unload and reload of the database. If you want to reorganize an area that has set linkage with another area in the database, CA IDMS/DB Reorg updates the set linkage without requiring a reorganization of the linked area. Also, logically deleted records (LDELs) do not have to be removed before reorganization. All of these tasks can be accomplished with one utility when you use CA IDMS/DB Reorg.
In addition, many other true reorganization features were built into CA IDMS/DB Reorg to optimize changing page ranges and page sizes, record placement, and reduction of I/Os and record fragmentation.
This section contains detailed information about CA IDMS/DB Reorg's:
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