sqlalchemy, sorry, too many clients already

Running process gives this error. The issue is likely this one: https://github.com/smnorris/pgdb/issues/5

$ python designatedlands.py process
.......
INFO:root:Inserting c02_park_er into designatedlands_prelim
Traceback (most recent call last):
  File "designatedlands.py", line 995, in <module>
    cli()
  File "/usr/local/lib/python2.7/site-packages/click/core.py", line 722, in __call__
    return self.main(*args, **kwargs)
  File "/usr/local/lib/python2.7/site-packages/click/core.py", line 697, in main
    rv = self.invoke(ctx)
  File "/usr/local/lib/python2.7/site-packages/click/core.py", line 1066, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/usr/local/lib/python2.7/site-packages/click/core.py", line 895, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/usr/local/lib/python2.7/site-packages/click/core.py", line 535, in invoke
    return callback(*args, **kwargs)
  File "designatedlands.py", line 865, in process
    pool.map(func, tiles)
  File "/usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python2.7/multiprocessing/pool.py", line 251, in map
    return self.map_async(func, iterable, chunksize).get()
  File "/usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python2.7/multiprocessing/pool.py", line 567, in get
    raise self._value
sqlalchemy.exc.OperationalError: (psycopg2.OperationalError) FATAL:  sorry, too many clients already

bcgov / designatedlands

sqlalchemy, sorry, too many clients already #45