Alvaro Herrera <alvherre@protecne.cl> writes:
> ARAIK, pg_log records which tuples are "active" and which ones are
> obsolete, so I'm not going to delete it.
Actually, it records which transactions committed and which didn't.
So, you can slow the rate of growth of pg_log if you can reduce the
number of transactions used. Consider wrapping sequences of operations
into begin/end blocks.
> I know I can dump and restore from a clean (empty) install,
> but is there a simpler way?
Afraid not. pg_log is critical data.
regards, tom lane