"vinita bansal" <sagivini(at)hotmail(dot)com> writes:
> I have set the following variables in postgresql.conf to true:
> stats_start_collector,stats_command_string, stats_row_level,
> stats_reset_on_server_start.
Is the statistics collector actually starting? Look in "ps auxww"
output to see if the postmaster has a pair of child processes that claim
to be the stats collector and stats buffer processes.
If not, the postmaster log should have some info about the problem.
regards, tom lane