During the copy phase we run one loop of bulk copy for approximately an hour at a time (by default) before running catchup. VReplicationCopyLoopCount counts the number of times this loop has run for each stream and VReplicationCopyLoopCountTotal the total across all streams.
This metric relates to the times each phase is run during the lifetime of a stream.
VReplicationPhaseTimings counts the total time taken by the runs,
VReplicationPhaseTimingsCounts the number of runs and VReplicationPhaseTimingsTotals the total
runs across all streams.
VReplicationTableCopyTimings counts the time taken per table per stream during the copy phase of the stream. Unlike VReplicationPhaseTimings, this metric updates continuously, rather than being set once at the end of the copy phase.
These metrics show the replication lag of the target stream with respect to the source stream. VReplicationLagSeconds shows the current replication lag and VReplicationLagSecondsMax has the maximum lag in this stream. Note that these values are only valid during the replication phase of a workflow.