https://openvpn.net/index.php/access-server/docs/admin-guides-sp-859543150/howto-commands/377-log-database.html
It does appear harmless in our case, some kind of licence and vpn stat collection? But, it would still be nice to know for certain.
$ cd <path-to-openvpn_as>/scripts
$ sudo ./logdba --csv --service_filt=XML_API --columns="+api_method"
<hostname>,local_root,2016.10.26 22:07:25 PDT,,XML_API,LicenseUsage,,1,,,,,,
<hostname>,local_root,2016.10.26 22:08:49 PDT,,XML_API,GetVPNSummary,,1,,,,,,
... 8270+ records snipped ...
<hostname>,local_root,2016.11.10 06:47:38 PST,,XML_API,GetVPNSummary,,1,,,,,,
<hostname>,local_root,2016.11.10 06:48:31 PST,,XML_API,LicenseUsage,,1,,,,,,