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trigger ddl actions in a table

From: "König, Monika" <monika(dot)koenig(at)bonn(dot)de>
To: "'pgsql-admin(at)postgresql(dot)org'" <pgsql-admin(at)postgresql(dot)org>
Subject: trigger ddl actions in a table
Date: 2007-11-15 15:29:51
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Lists: pgsql-admin
I need a way for logging every action on the system catalog. I must have a
table which shows when a tables was created or updated or deleted. I need
the date  of the change .

I tried to make an trigger on pg_catalog.pg_class but this throws an error :
"ERROR: permission denied: "pg_class" is a system catalog".

I can see all ddl in my log files, but 
	- there are even the errors in and 
	- i can't use it for a select

Is there an possibility for having such an system-action table??


Monika König


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