About Lag
For Extract, lag is the difference, in seconds, between the time that a record was processed by Extract (based on the system clock) and the timestamp of that record in the data source.
For Replicat, lag is the difference, in seconds, between the time that the last record was processed by Replicat (based on the system clock) and the timestamp of the record in the trail.
To view lag statistics, use either the LAG
or SEND ER
, SEND EXTRACT
, SEND REPLICAT
commands.
Note:
The INFO
command also returns a lag statistic, but this statistic is taken from the last record that was checkpointed, not the current record that is being processed. It is less accurate than LAG
or INFO
.