After a Teradata Database System Reconfiguration
If the Reconfiguration program (a Teradata Database support utility) is run while a Teradata MultiLoad job is active, the associated target tables, work tables, and possibly the error tables, are not redistributed. The Teradata MultiLoad restart log table is redistributed.
When Teradata MultiLoad restarts after the reconfiguration completes, the BEGIN MLOAD command fails with the following error message:
UTY0805 DBC failure, 2563: MLOAD not allowed: DBC had
At this point, the Teradata MultiLoad tables cannot be recovered and the target tables must be reloaded.
Do not reconfigure Teradata Database during an active Teradata MultiLoad job.