The main objective is to ensure that there are sufficient resources available to support the change in the DB2 workload, and that the CICS-DB2 RDO interface is able to handle the increased CICS-DB2 activity. A number of areas must be monitored to ensure that there are no problems.
You should assemble a new version of the DST and change MSTATUS to ACT for the newly migrated file or files.