i set the auto vacuum option to enable. but my database size(hard-
disk
space) still increased from 420MB to 440MB in 8 hours. most of the
operations in this database are the "Select" query command, just few
of "Update or Insert".
why it can be increased so strongly?
after i executed the command " vaccumdb -f -z testdb", but the size
just decreased 1 or 2MB...
what's the problem?
how to know which command(select,insert....) takes the hurge loading
to database in this time?

computer environment:
System: Red Hat Enterprise 4
Postgresql Server: 8.0.13
count of client connected : about 100 pc