The syntax for admin stats is:
admin { stats | statistics }[, sysmon |, "all" |, module_name[, inbound |, outbound ][, display_name ] ] [, dataserver[, database ] |, instance_id ] [, display |, save[, num_obs ] ] [, sample_period ]
admin stats lets you specify:
The counters to be sampled
The length of the sample period
Whether to save statistics to the RSSD or display them on the computer screen
By default, Replication Server does not report counters that show 0 (zero) observations for the sample period. You can change that behavior by setting the stats_show_zero_counter configuration on using configure replication server. See the Replication Server Reference Manual for complete syntax and usage information.