The REORG utility reorganizes a table space to improve access performance and reorganizes indexes so that they are more efficiently clustered. During the REORG execution, DB2 locks the entire tablespace to allow an update of secondary indexes across partition boundaries.
To select the table spaces and indexes to reorganize, use the DB2 Reorg Utility. CA Gen generates the REORG JCL based on the selections made using the DB2 REORG Utility.
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