The admin stats command syntax and behavior has changed.
admin { stats | statistics } [, sysmon | "all"
| module_name [, inbound | outbound ] [, display_name] ]
[, server[, database ] | instance_id ]
[, display |, save [, obs_interval ] ]
[, sample_period]
The behavior for the save parameter with a sample_ period has also changed. The admin stats returns the session immediately. Its original num_obs option has been changed to obs_interval, which can be a numeric value in seconds, or a quoted time format string hh:mm[:ss].