Hick Gunter wrote
> If you are running an SQLite version 3.11.0 or newer, only pages that are
> changed for the first time in the transaction are copied to the WAL file,
> thus extending it.
> 
> While progressing the transaction, the rate of "newly changed" to "changed
> again" pages will shift towards re-reading and rewriting the WAL file copy
> of a page; this will tend to slow down the rate at which the WAL file is
> growing, even at a constant delete rate, until every page has been updated
> at least once, and then stop growing until all the remaining deletes have
> been processed.

Running 3.19; thanks for the explanation, this never occured to me and makes
perfect sense.




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