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This file is the db2ckupgrade.exe is used for customers upgrading from 1.0.19.0, 1.0.19.1 or 1.0.19.2 upgrading to 1.0.19.7 or beyond. This upgrade will upgrade the db2 database from 11.1.9 to 11.5.1. The IIAS or Db2 Warehouse release notes should be used for the proper upgrade procedure and how to use the db2ckupgrade executable.#Db2