Recovering Replicat After an Unplanned Re-partitioning

An unplanned re-partitioning is when Replicat is not allowed to shut down cleanly before it is started again with a new parameter file that contains updated thread partitioning. In this scenario, some or all of the old threads were not able to finish their work and arrive at a common checkpoint. Upon restart, the coordinator thread attempts to apply the old partitioning scheme, and Replicat abends with an error. You can recover the coordinated Replicat group from this condition in one of the following ways:

  • Use the auto-saved copy of the parameter file

  • Reprocess from the low watermark with HANDLECOLLISIONS