Dissolve function crash QGIS 2.16.3

[qgib]

Author Name: Soren Lindqvist (Soren Lindqvist)
Original Redmine Issue: 15712
Affected QGIS version: 2.16.3
Redmine category:unknown

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I have a polygon layer with about 12000 polygons, I want to dissolve by using an ID field using "vector-geoprocessing tools-dissolve". Most often it crashes when trying to run the process or it runs forever. Last time I tried it was running for 3 days and only about 25 % in progress bar before I needed to force quit. I have tried with temporary file and also to save the file = same result. I can categorise (style) with the ID field and it works fine, but to dissolve it does not work at all.
Hoping I could get around the problem I also tried with the plugin "Dissolve with stats", but it crash all the times for me.

Thanks
Soren

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Related issue(s): #23630 (duplicates)
Redmine related issue(s): 15707

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[qgib]

Author Name: Soren Lindqvist (Soren Lindqvist)

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Did see the issue #23630. I also tried the "Dissolve all" and it seems to take ages to finish similar to the one I stopped after 3 days...

[qgib]

Author Name: Alexander Bruy (@alexbruy)

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Duplicates #23630

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• tag was changed from Dissolve to
• resolution was changed from to duplicate
• status_id was changed from Open to Rejected

[qgib]

Author Name: Jürgen Fischer (@jef-n)

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• category_id was configured as Unknown