Upgrading Qlik Sense Enterprise on Windows does not automatically upgrade the bundled PostgreSQL version. New versions of PostgreSQL are only deployed during a new install. This means upgrading from, for example, Qlik Sense Enterprise on Windows May 2021, PostgreSQL will remain on 9.6.
For many organizations, running on the latest supported PostgreSQL version is a security requirement. To achieve this:
The information in this article is provided as-is and to be used at your own discretion. Depending on the tool(s) used, customization(s), and/or other factors ongoing support on the solution below may not be provided by Qlik Support.
This process requires a full reinstallation of the product. Despite the fact that a backup is being taken as part of the process, it is highly recommended to have a second backup plan in place such as a Virtual Machine snapshot and/or a Server Backup.
It is highly recommended to test this process in a test environment to get familiar with it.
Step 1: Upgrading your Qlik Sense site
The first step is to upgrade your environment to Qlik Sense Enterprise on Windows May 2021 following the steps and recommendations provided on this link.
Once the upgrade is done make sure your Qlik Sense site is completely operational.
Step 2: Backing up your Qlik Sense site
At this point, you have an operational Qlik Sense site running on Qlik Sense Enterprise on Windows May 2021, however, the bundled PostgreSQL is still on version 9.6.
The next step will be to backup your entire Qlik Sense site following these instructions (including the certificates) . The backup is essential as it will need to be restored later on.
Step 3: Uninstall Qlik Sense on the central node
You will now need to uninstall Qlik Sense from the central node following these instructions.
During the uninstall:
Have all rim nodes stopped.
Don't check the box RemoveQlik Sensedemo apps, certificates, and data folders.
After uninstall and before reinstall rename C:\programdata\qlik to C:\programdata\qlik.old and rename C:\program files\qlik to C:\program files\qlik.old (if you changed it on another drive adjust accordingly)
Step 4: Install Qlik Sense Enterprise on Windows May 2021 on the central node
Now that Qlik Sense Enterprise on Windows May 2021 is uninstalled on the central node, you will reinstall it as a result will deploy a bundled PostgreSQL 12.5. Instructions available here.
select the same host name and database settings as before
The file share can point at a temporary one since you will take the original one again after restoring the QSR database in step 5.
Do not check the box Start theQlik Senseservices when the setup is complete at the end of the installer.
Step 5: Restoring your Qlik Sense site
You now have a clean Qlik Sense Enterprise on Windows May 2021 deployed on your central node with PostgreSQL 12.5. You now need to restore your environment to retrieve all your configurations and apps.
Note: While restoring the database backup you will most likely receive the following error which can be ignored. This error is caused by the version discrepancies between the pg_dump that made the dump file and the pg_restore that's restoring it - in example files coming from PostgreSQL version 9.6 vs files coming from PostgreSQL version 12.5. QSR backup taken and restored with the same version of PostgreSQL will not produce that error.
pg_restore: while PROCESSING TOC: pg_restore: from TOC entry 3; 2615 2200 SCHEMA public postgres pg_restore: error: could not execute query: ERROR: schema "public" already exists Command was: CREATE SCHEMA public;
pg_restore: warning: errors ignored on restore: 1
Once the environment is restored, you should be able to start your central node and rim nodes successfully.
Qlik Sense Enterprise on Windows May 2021 and later