Replication Activity Viewer

The Replication Activity Viewer provides a graphical representation of records processed during a specific replication instance and over multiple replication instances. It shows mirroring latency and volume history to help analyze the transaction volume, allowing you to adjust settings for maximum performance by the Replication Agent.

The Viewer consists of three tools:

Transaction Latency Chart

This graph compares the current time with the latest processed transaction time (or the last scheduled mirroring time if there are no transactions). If the lag between the two exceeds the Transaction Latency Threshold (set in the General tab of the Replication Agent Options dialog), the shaded area in the graph is displayed in red and the Latency Status column in the Replication Monitor displays the value Threshold Warning. This can indicate that the current settings for the Replication Agent and the replication are not allowing the Replication Agent to keep up with the number of transactions.

The left-hand column of the graph displays values in seconds based on the highest value visible in the displayed area. As the graph is updated, the range in the left-hand column may reset.

The graph is automatically updated every 3 seconds. This parameter is not currently configurable.

Graph interpretation

Grey	Indicates that there have been no new transactions during a period of time greater than the Transaction Latency Threshold set in the Options dialog.
Blue	Indicates progress since the last transaction time that was read from the log. The last transaction time is stored in the Replication Properties as a read-only property.
Green	Indicates progress since the last time mirroring was scheduled to start (based on the mirroring interval set for the replication in the Replication Properties dialog.)
Red	Indicates that the limit set in the Options dialogTransaction Latency Threshold field has been reached. It shows that the transaction log checking interval cannot keep up with the number of transactions that need to be processed. If you enable a replication after a period of time, the chart will initially show high values in red to indicate the significant difference between the last transaction processed and the current time. As soon as mirroring starts, the display will update.

Records Processed Dial

Displays the speed of records processed based on the average records processed per interval. Note that the display is updated every three seconds, so the number of transactions processed is averaged over 3 seconds.

History Chart

Displays the number records processed based on the selected time interval. This chart is updated every ten minutes. Note that the information displayed in this chart is obtained from the Syniti DR Log. The chart reads the log every 10 minutes, looking for replication information. Therefore, this chart can affect performance in the Management Center (not in replications.) Performance is typically better if the log is stored in a database rather than in text files. It is recommended that you close the Replication Activity tab if you are not actively using it to avoid affecting response time in the Management Center.

Opening the Replication Activity Viewer

In the Management Center Metadata Explorer, Replication Browser, or Replication Monitor, select a replication and, from the right mouse button menu, choose Show Replication Activity.