After a migration is executed under NDVRBOOK with OPTION=MIGRATE, Change Log Entries exist in the target CCDB that reflect the event. To create corresponding CLEs on the source system to reflect the fact that an entity was selected for migration and actually received on the target, a two-step procedure is invoked.
Step 1 is the execution of NDVRDCF1 on the target system to extract an entity list. To perform this task, the NDVRENI file created by NDVRDSEL and previously consumed by NDVRBOOK is again consumed by NDVRDCF1. This is done to obtain the necessary control information to identify the appropriate CLEs involved. It is accomplished on the basis of the SOURCE SYSTEM/DICTIONARY and VERIFY DATE/TIME.
During Step 2, a new file is created DDNAME NDVRENO) which contains a confirmation file to be sent to NDVRDCF2 on the source system. The confirmation file will contain the control information from the NDVRENI file and a generated CONFIRM statement (See format below). The CONFIRM statement identifies the actual target system. One ENT statement will exist in the confirmation file for each entity received with OPTION=MIGRATE. The ENT statement will contain the DATE and TIME the entity was received.
Each ENT statement produced by NDVRDCF1 will be consumed by NDVRDCF2 on the source system and used to create a Migrate-out CLE (action code = C) in the CCDB. Each Migrate-out CLE will contain the actual received DATE/TIME and the TARGET SYSTEM/DICTIONARY names in its description. The CLE will appear in the source CCDB as of the VERIFY DATE/TIME of the entity after it is processed by NDVRDCF.
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