Bug report #15692

DB-Manager freezes when running complex SQL queries

Added by R. R. over 7 years ago. Updated about 5 years ago.

Category:DB Manager
Affected QGIS version:2.16.3 Regression?:No
Operating System: Easy fix?:No
Pull Request or Patch supplied:No Resolution:end of life
Crashes QGIS or corrupts data:No Copied to github as #:23615


The DB-Manager freezes every time when running more complex SQL queries. Using the query tool in pgAdmin III the same queries work fine.

15692.m4v (2.68 MB) R. R., 2017-03-12 06:31 AM


#1 Updated by Anita Graser over 7 years ago

What do you mean with "freeze"? Does the query finish in DB Manager after the necessary processing time? Unfortunately it is not possible to stop a query in DB Manager once it has been started.

#2 Updated by Giovanni Manghi about 7 years ago

  • Status changed from Open to Closed
  • Resolution set to duplicate

There is already a feature request asking to make possible stop queries in DB Manager (just can't find the ticket number now).

#3 Updated by R. R. about 7 years ago

  • Status changed from Closed to Reopened

Hi Giovanni, this is a bug report, not a feature request. In pgAdmin III all queries I have tested finish after a few hours, but QGIS stops functioning running the same queries.

#4 Updated by R. R. about 7 years ago

Anita Graser wrote:

What do you mean with "freeze"? Does the query finish in DB Manager after the necessary processing time?

Hi Anita, I have uploaded a screencast to demonstrate the issue. I do not know if the query finishes after the necessary processing time.

#5 Updated by Giovanni Manghi about 7 years ago

  • Regression? set to No
  • Easy fix? set to No

#6 Updated by Giovanni Manghi about 5 years ago

  • Resolution changed from duplicate to end of life
  • Status changed from Reopened to Closed

End of life notice: QGIS 2.18 LTR


QGIS 3.4 has recently become our new Long Term Release (LTR) version. This is a major step in our history – a long term release version based on the massive updates, library upgrades and improvements that we carried out in the course of the 2.x to 3x upgrade cycle.

We strongly encourage all users who are currently using QGIS 2.18 LTR as their preferred QGIS release to migrate to QGIS 3.4. This new LTR version will receive regular bugfixes for at least one year. It also includes hundreds of new functions, usability improvements, bugfixes, and other goodies. See the relevant changelogs for a good sampling of all the new features that have gone into version 3.4

Most plugins have been either migrated or incorporated into the core QGIS code base.

We strongly discourage the continued use of QGIS 2.18 LTR as it is now officially unsupported, which means we’ll not provide any bug fix releases for it.

You should also note that we intend to close all bug tickets referring to the now obsolete LTR version. Original reporters will receive a notification of the ticket closure and are encouraged to check whether the issue persists in the new LTR, in which case they should reopen the ticket.

If you would like to better understand the QGIS release roadmap, check out our roadmap page! It outlines the schedule for upcoming releases and will help you plan your deployment of QGIS into an operational environment.

The development of QGIS 3.4 LTR has been made possible by the work of hundreds of volunteers, by the investments of companies, professionals, and administrations, and by continuous donations and financial support from many of you. We sincerely thank you all and encourage you to collaborate and support the project even more, for the long term improvement and sustainability of the QGIS project.

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