Bhanu, Yogesh wrote:
Hello admins,
Is there any tool available inside Postgres to track what databases are being used and how . It will be nice to generate a per database stats (Inserts, Select, Drop) for a month or more and also track how the database grew big/small in the same time .
Yogesh,
First, make sure you have set stats_start_collector and stats_row_level to true. You may optionally set stats_command_string and stats_block_level to true for more stats with a correspondingly greater performance hit. Then, look at some of the pg_stat_* (and pg_statio_* if you have block level stats turned on) tables/views.
A couple of the most useful tables (to me, anyhow): The pg_class view has counts of pages and tuples per relation (tables are relkind 'r', FYI). The pg_stat_database view shows the number of transactions comitted/rolled back, which is useful to track rates of usage, especially with a graphing tool like MRTG. To get the number of inserts/updates/deletes on a table, check out the pg_stat_user_tables view.
For more info, check out the postgres docs on the subject:
http://www.postgresql.org/docs/7.3/interactive/monitoring-stats.html
Regards,
Bill Montgomery
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