> So in practice, should one vacuum template1 when
> vacuuming other database (Assuming one doesn't use vaccumdb
> script when vacuuming database)?
In practice, it shouldn't be a big deal to vacuum template1 once in a
while, because, since it shouldn't have much data other than
pg_catalog tables in it, it shouldn't take long to vacuum it.
If you vacuum it once a day or once a week or such, the 15 seconds
won't take much out of the life of the disk drives...
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