Since Rx-Universe does not support VSS (Volume Shadow Services), file are actively being written to tables and databases. In order to allow a successful backup, you will need to stop/start Rx-Universe transnational sessions (Serial Device Interface, TCP/IP Device Interface, Job Tracker, Digital Processor and Remote Processor). This can either be done manually or automatically scheduled.
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2) Set the "Time to shut down" and "Time to restart". It would be a good practice to test how much time your backup software takes to successfully backup the Rx-Universe filesneeds to complete this process, it would help minimize the gap of downtime between shutdown and restart.
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