By default the InfluxDB® database is located under
WinCC_OA_Proj
/db/wincc_oa/influx. The location is defined in the InfluxDB® configuration file
WinCC_OA_Proj
/config/influxdb.conf in the [meta] (for internal InfluxDB® metadata) and [data] (for actual data) section.
CAUTION:
Do not modify these settings.
You can specify the location of the backup data (backed up segments) in the NGA settings. The default is
WinCC_OA_Proj
/db/wincc_oa/influx/backup. You can select another
backup directory. When you create a new NGA project, an empty InfluxDB® is created in the
WinCC_OA_Proj
/db/wincc_oa/influx/backup directory. The structure of the InfluxDB®
is described in the following:
Directory Name
Description
backup
Contains backup data.
Internal directory.
Metadata, internal directory.
Write buffers, internal directory.
winccoa
Contains application data.
_series
Internal directory.
EVENT
Segments for the archive group EVENT
ALERT
Segments for archive group ALERT
_internal
Internal DB, see below
Note:
Note that the database creates data files on demand. Therefore, there are no preallocated files except for the "_internal" database. After the first start of the database, the InfluxDB®
directory already contains some files (around 32 MB) even if no data was archived so far.
Note:
Note that you can deactivate the internal InfluxDB® database:
see
influxdata.com page
Persisted buffers created by the frontend (which are not part of the InfluxDB®, but managed by the NGA) are located in
WinCC_OA_Proj
/db/wincc_oa/nga.
SIMATIC WinCC Open Architecture Version 3.18.24 - © ETM professional control GmbH
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