current_query stat is idle

I used pg_top to monitor my database and i'm looking for method to find out
what queries are currently being serviced by the database.
pg_top inform me that the queries are IDLE and the result of select * from
pg_stat_activity return that current_query is always on IDLE status.

Please can you help

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Ali MEZGANI
Network Engineering/Security
http://securfox.wordpress.com/