Changing data set definitions
If the table space is defined by storage groups, DB2® allocates space, and you cannot alter data set definitions while a REORG job is in process. DB2 deletes and redefines the necessary data sets to reorganize the object.
About this task
For REORG with SHRLEVEL REFERENCE or CHANGE, you can use the ALTER STOGROUP command to change the characteristics of a DB2-managed data set. To change the characteristics of a user-managed data set, specify the new characteristics when you create the shadow data set. For example, placing the original and shadow data sets on different disk volumes might reduce contention and improve the performance of REORG and the performance of applications during REORG execution.
Parent topic: REORG TABLESPACE
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