In Oracle 10g, there is a table called dba_hist_sysmetric_summary which stores lot of useful information about the database activities. One of the metric is called NETWORK TRAFFIC VOLUME per sec(metric_id=2058). In my case, for a particular time period, the maximum value stored for this particular metric was 2.2GB bytes per sec. But our network hardware doesn't support this much transaction. The above value is a very large number in our case. Our network resource does not support this much transaction rate. Could some one throw light on what does ORACLE mean by the metric NETWORK TRAFFIC VOLUME PER SEC?