Make a backup of the Repository database : How to backup PostgreSQL database in Qlik Sense.Stop all the Qlik Sense Services except the Repository database service.Change the scheduler settings in Qlik Management Console to Worker and Worker.Please note that this will need to be a hard deletion from the table and not soft deletion. To resolve this issue, it is recommended to wipe the data from the Execution sessions table. Unexpected exception in Delete for Entity ExecutionSession with Id Startup sequence failed, shutting down to avoid any inconsistent state, please restart the scheduler Utility.SystemInformationProviderĪn item with the same key has already been added. The following will be printed to the scheduler logs: This can look like this in the repository database: Entries with IDs that already exist in the table, new entries with same ID will cause an error and abort the execution.Entries flagged as incomplete that interfere with the execution queue ( block the next tasks ).ID reference to a task that does not exist anymore.A row that is incomplete ( blank values ) in the ExecutionSessions table data.The startup sequence will start to fail and cause errors in the scheduler logs. The data in the scheduler tasks execution sessions table gets corrupted. This issue happens when users add, remove, delete too many tasks while frequently stopping and starting the scheduler service. In the Qlik Sense Management Console, task statuses may be listed as Reset. This indicates that the issue is related to the scheduler ExecutionSessions table data in the Repository PostGres SQL database. The scheduler service may fail after restarting. In Qlik Sense, there could be a situation where the server is installed and functioning, all the services are running except the fact that all the scheduler tasks are failing.
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