[Solved] backup database in too short interval

[pippo69]

Since few days JD2 creates backup database files in a too short interval:
on MacOX:
6.2M Nov 7 19:11 downloadList19831.zip
6.2M Nov 7 19:15 downloadList19832.zip
6.2M Nov 7 19:20 downloadList19833.zip
6.2M Nov 7 19:24 downloadList19834.zip
6.2M Nov 7 19:25 downloadList19835.zip
6.2M Nov 7 20:39 downloadList19836.zip
14K Nov 7 17:31 linkcollector5133.zip
14K Nov 7 17:31 linkcollector5134.zip
216B Nov 7 17:31 linkcollector5135.zip
1.1K Nov 7 19:10 linkcollector5136.zip
216B Nov 7 19:11 linkcollector5137.zip
216B Nov 7 20:39 linkcollector5138.zip

on a linux host:
179M Nov 7 20:37 downloadList229873.zip
179M Nov 7 20:37 downloadList229874.zip
179M Nov 7 20:38 downloadList229875.zip
179M Nov 7 20:41 downloadList229876.zip
179M Nov 7 20:42 downloadList229877.zip
179M Nov 7 20:46 downloadList229878.zip
215 Nov 7 19:00 linkcollector29574.zip
82K Nov 7 19:43 linkcollector29575.zip
94K Nov 7 19:43 linkcollector29576.zip
94K Nov 7 19:44 linkcollector29577.zip
94K Nov 7 19:44 linkcollector29578.zip
215 Nov 7 19:45 linkcollector29579.zip