configuration related to statistics

Hello

I want to see statistics about the use of my postgresql 8.3 in Ubuntu 8.04.1
(Hardy) Server.

In my postgresql.conf I have the follow configuration related to statistics:

"""
#---------------------------------------------------------------------------
---
# RUNTIME STATISTICS
#---------------------------------------------------------------------------
---

# - Query/Index Statistics Collector -

#track_activities = on
#track_counts = on
#update_process_title = on

# - Statistics Monitoring -

log_parser_stats = on
#log_planner_stats = off
#log_executor_stats = off
#log_statement_stats = off
""""

But when I execute this command "select * from pg_stat_all_tables;" I get
all the rows with the values (except the 3 first values) set to 0:

"""
relid | schemaname | relname | seq_scan
| seq_tup_read | idx_scan | idx_tup_fetch | n_tup_ins | n_tup_upd |
n_tup_del | n_tup_hot_upd | n_live_tup | n_dead_tup | last_vacuum |
last_autovacuum | last_analyze | last_autoanalyze
--------+--------------------+-------------------------------------+--------
--+--------------+----------+---------------+-----------+-----------+-------
----+---------------+------------+------------+-------------+---------------
--+--------------+------------------
11444 | information_schema | sql_packages |
0 | 0 | | | 0 | 0 |
0 | 0 | 0 | 0 | |
| |
11431 | pg_toast | pg_toast_11429 |
0 | 0 | 0 | 0 | 0 | 0 |
0 | 0 | 0 | 0 | |
| |
153470 | pg_toast | pg_toast_153466 |
0 | 0 | 0 | 0 | 0 | 0 |
0 | 0 | 0 | 0 | |
| |
153207 | pg_toast | pg_toast_153204 |
0 | 0 | 0 | 0 | 0 | 0 |
0 | 0 | 0 | 0 | |
| |
"""

What I need to do to obtain the values updated in pg_stat_all_tables? Or the
statistic are stored in other place?

Any help will be appreciated.
Thanks in advanced.
Leticia Larrosa

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