Hi Bruno,
Unfortunately it is a known issue that Geopackages and QGIS are bad at
handling simultaneous write and even read requests and developers are
working on finding solutions (hopefully soon). In single user scenarios
Geopackages are fine. But Multiuser must be avoided, even for reading
only, unfortunately.
As to PostgreSQL vs. Postgis: Postgis is the spatial extension of
PostgreSQL. If you need geometries (which I assume) than you will need
Postgis.
Andreas
Am 06.05.20 um 08:58 schrieb bru...@mailbox.org:
Hi
In my company we are five people who sometimes work with GIS, and we
are moving from ArcGIS to QGIS (how cool is QGIS and SLYR!) and in
this context from ESRI file geodatabase to geopackage. Today we run
into serious issues when two people worked with the same geopackage. I
was aware, that it is dangerous and unwise to edit the same geopackage
from two different computers at the same time. But I did not expect
both QGIS applications to crash immediately and the geopackage to get
corrupted. I hoped to get a warning or simply not be able to enter
edit mode (We later found out, that the corrupted geopackage could be
recoveredby by adding a new table, this somehow fixed it. Whew!).
Worse, I found that the same thing happens, when I open a QGIS project
with a layer from a geopackage for display only (no edit mode), which
is being edited by an other user on an other computer. Again, both
QGIS application crashed immediately with data loss. Again, the
non-responsive QGIS tasks could not be killed by windows taskmanager,
only by restarting of the computers.
We are using QGIS 3.12.2 on Windows 10. The Geopackages are located on
a samba network share.
My questions:
1. Is this setup that bad? Do you experience the same fatal
consequences if someone loads a layer from a geopackage which is being
edited by someone else? Is there something I do wrong or I that can do
to improve the situation?
2. I realize, that we should probably move from geopackage to a
database. Do we need PostGIS or can we use PostgreSQL? We don't need
more functinality than a geopackage offers (exept multi user read/edit
possibility and stability).
Many thanks for some hints that put me in the right direction!
Bruno
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