This table is used by the massload utility to register of current timestamp.

Column Descriptions:

INSTANCEIDBIGINTInstance of the massload utility owning this timestamp register.
MLTIMESTAMPTIMESTAMPCurrent timestamp register.
OPTCOUNTERSMALLINTThe optimistic concurrency control counter for the table. Every time there is an update to the table, the counter is incremented.