Just installed Statspack on Oracle9i, executed statspack.snap; and received :
sql> execute statspack.snap;
begin statspack.snap; end;
*
error at line1:
ora-00001: unique constraint (perfstat.stats$sql_summary_pk) violated
ora-06512: at "perfstat.statpack", line 1148
ora-06512: at "perfstat.statpack", line 2134
ora-06512: at "perfstat.statpack", line 72
ora-06512: at line 1

I install exactly in another db and executed fine. Any ideas would be greatly appreciate?

MSully