https://community.qlik.com/t5/Management-Governance/Scheduler-issues-quot-DeleteBySelection-quot-operation-failed/m-p/2053609#M24645 <P>Hello community,</P> <P>I have a global issue that seems link to the scheduler.&nbsp;</P> <P>One task is "blocked" in reload status for more than one week. This task can't be aborted, or deleted. When I try to delete the task, this message appears :&nbsp;"DeleteBySelection" operation failed</P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="mickael_b2boost_0-1679923374781.png" style="width: 400px;"><img src="https://community.qlik.com/t5/image/serverpage/image-id/103572i5EE051A9368CD9E6/image-size/medium?v=v2&amp;px=400" role="button" title="mickael_b2boost_0-1679923374781.png" alt="mickael_b2boost_0-1679923374781.png" /></span></P> <P>The related app can be reloaded manually from the hub, but can't be deleted from hub or qmc. On log I can see this message when trying to delete the app :&nbsp;<SPAN>Bad Request [400]:Bad Request(Object write failed.) (HTTP code: 400)</SPAN></P> <P><SPAN>When I change the app used in the reload of the task with issue for an other app, I can delete the app but not the new one used.</SPAN></P> <P>It seems this have impact on others tasks : Scheduled tasks don't work anymore, and when I launch a reload manually from the QMC, only the status Triggered is shown (even if the task is successfully reloaded). After relaunching services, the good status is shown (success)</P> <P>I try to perform server update, from February 2021 to August 2021, because a bug with same error message was corrected on this version, but it doesn't help. It's like the scheduler service doesn't work anymore. Services can be restarted without any issues.</P> <P>Do you have any idea how to resolve that? I can't find any information about this error message except something link to stream but here it's at task level, not stream.</P> <P>Thank you very much for your help,</P> <P>Mickael</P> Mon, 27 Mar 2023 13:40:38 GMT mickael_b2boost 2023-03-27T13:40:38Z https://community.qlik.com/t5/Management-Governance/Scheduler-issues-quot-DeleteBySelection-quot-operation-failed/m-p/2053609#M24645 <P>Hello community,</P> <P>I have a global issue that seems link to the scheduler.&nbsp;</P> <P>One task is "blocked" in reload status for more than one week. This task can't be aborted, or deleted. When I try to delete the task, this message appears :&nbsp;"DeleteBySelection" operation failed</P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="mickael_b2boost_0-1679923374781.png" style="width: 400px;"><img src="https://community.qlik.com/t5/image/serverpage/image-id/103572i5EE051A9368CD9E6/image-size/medium?v=v2&amp;px=400" role="button" title="mickael_b2boost_0-1679923374781.png" alt="mickael_b2boost_0-1679923374781.png" /></span></P> <P>The related app can be reloaded manually from the hub, but can't be deleted from hub or qmc. On log I can see this message when trying to delete the app :&nbsp;<SPAN>Bad Request [400]:Bad Request(Object write failed.) (HTTP code: 400)</SPAN></P> <P><SPAN>When I change the app used in the reload of the task with issue for an other app, I can delete the app but not the new one used.</SPAN></P> <P>It seems this have impact on others tasks : Scheduled tasks don't work anymore, and when I launch a reload manually from the QMC, only the status Triggered is shown (even if the task is successfully reloaded). After relaunching services, the good status is shown (success)</P> <P>I try to perform server update, from February 2021 to August 2021, because a bug with same error message was corrected on this version, but it doesn't help. It's like the scheduler service doesn't work anymore. Services can be restarted without any issues.</P> <P>Do you have any idea how to resolve that? I can't find any information about this error message except something link to stream but here it's at task level, not stream.</P> <P>Thank you very much for your help,</P> <P>Mickael</P> Mon, 27 Mar 2023 13:40:38 GMT https://community.qlik.com/t5/Management-Governance/Scheduler-issues-quot-DeleteBySelection-quot-operation-failed/m-p/2053609#M24645 mickael_b2boost 2023-03-27T13:40:38Z https://community.qlik.com/t5/Management-Governance/Scheduler-issues-quot-DeleteBySelection-quot-operation-failed/m-p/2054681#M24673 <P>Solution provided by Qlik support following this article :&nbsp;<A href="https://community.qlik.com/t5/Official-Support-Articles/Qlik-Sense-Scheduler-Tasks-keep-failing-PostgreSQL-error/ta-p/1716411" target="_blank">https://community.qlik.com/t5/Official-Support-Articles/Qlik-Sense-Scheduler-Tasks-keep-failing-PostgreSQL-error/ta-p/1716411</A><BR />One entry on&nbsp;<SPAN>ExecutionSessions&nbsp;table in Qlik PostgreSQL DB had blank appid.</SPAN></P> <P>Thank you very much.</P> Wed, 29 Mar 2023 13:13:24 GMT https://community.qlik.com/t5/Management-Governance/Scheduler-issues-quot-DeleteBySelection-quot-operation-failed/m-p/2054681#M24673 mickael_b2boost 2023-03-29T13:13:24Z