Capturing changes occurring on tables? - postgresql

Question

I want to see what tables and fields in PostgreSQL that a module in OpenERP is changing/updating when it runs.
Any suggestions?
application_name | pgAdmin III - Query Tool | client
bytea_output | escape | session
client_encoding | UNICODE | session
client_min_messages | notice | session
DateStyle | ISO,MDY | session
default_text_search_config | pg_catalog.english | configuration file
lc_messages | English_United States.1252 | configuration file
lc_monetary | English_United States.1252 | configuration file
lc_numeric | English_United States.1252 | configuration file
lc_time | English_United States.1252 | configuration file
listen_addresses | * | configuration file
log_destination | csvlog | configuration file
log_line_prefix | %t | configuration file
log_timezone | US/Pacific | configuration file
logging_collector | on | configuration file
max_connections | 100 | configuration file
max_stack_depth | 2MB | environment variable
port | 5432 | configuration file
shared_buffers | 32MB | configuration file
TimeZone | US/Pacific | configuration file

Answer 1

If OpenERP is using a specific ROLE when it connects ("openerp" is used in the example), you can log the statements a couple of different ways:
1). ALTER ROLE openerp SET log_min_duration_statement TO 0;
2). ALTER ROLE openerp SET log_statement TO 'mod';
My preference is option #1, but you might want to try both.
To revert the settings to defaults:
1). ALTER ROLE openerp SET log_min_duration_statement TO DEFAULT;
2). ALTER ROLE openerp SET log_statement TO DEFAULT; -- or 'none'
To see what the current settings are (when not set via ROLE), paste the results of the following query:
SELECT name,
current_setting(name) AS current_setting,
source
FROM pg_settings
WHERE source <> ALL (ARRAY['default'::text, 'override'::text]);