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Siebel Database Upgrade Guide for DB2 UDB for z/OS > Performing the Siebel Repository Merge > About Reorganizing Tables Before the Repository MergeEnvironments: Development environment only. This topic is part of an upgrade process. See How to Perform a Siebel Database Upgrade. During the repository merge process, objects from four separate repositories are read and compared. Because this is a memory-intensive process, it is recommended that you execute the REORG utility on certain tables before performing the repository merge to improve performance. The following tables receive a large number of inserts during each repository import; running REORGs on each of the following table's ROW_ID column will significantly increase the performance of the merge:
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