Qty of WAL files

Hi chaps,

I've set the checkpoint_segments on our system to 20 in anticipation of our system being quite write heavy, and I was
wonderingif someone could give me the lowdown on the amount of WAL files created and how they're re-used. 

I've just read in a large amount of data into the database and as expected quite a few WAL files were generated.

Will the amount of WAL files ever be decreased automagically?


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