Preparing the application upgrade

The LN application upgrade procedure consists of these phases:

A preparation phase in which users are informed and the environment is prepared for an upgrade.
The actual installation of the upgrade.
Post installation actions.

Note:

For all steps you must use an account with super user authorization.
A default text group template with a text group for, at least, company 0 is required for this account. To ensure this template is linked to the user account, use the User Data (ttaad2500m000) session. The data must be available on runtime.
In the Application Update Settings (ttmtm4501m000) session, you can configure message notifications to send during an application update. Notifications are not only sent to inform about the update result but also during the process itself. If a step takes longer to complete, a so-called heartbeat message is sent to inform that the process is still running. From- and To-email addresses can be specified.

To prepare the environment and inform the users about the application upgrade:

Start the Preliminary Update Check (ttmtm4554m000) and the Preliminary Update Check (ttmtm4500m400) sessions, to check if tenants are ready for the upgrade and no blocking issues are present.
Start the Install Upgrades and Patches (ttmtm3500m000) session.
Start the Planned Downtime (ttaad5530m000) session and specify the planned downtime period.

This is optional, but we recommend that you perform this step. Specify a downtime period. This ensures jobs are not started if they, based on their expected duration, would still be running at the start of the downtime period.
Inform the users about the upgrade. To define and send the announcement to the users, click System Message . For detailed information about system messages, see the online help of the System Messages (ttaad3290m000) session.
During an upgrade, normal users are not allowed to log on or have connections. In addition, it must be impossible to start jobs. To accomplish this, you must switch the environment to Admin Mode: click Admin Only and confirm this question: Environment will be set to Admin Mode. Do you want to continue?.

If the switch to Admin Mode has succeeded, the preparation phase is completed. You can now start the actual installation of the upgrade.

Note: When you log off, or when you are being logged off, the shared memory is shut down. When the first LN user then logs on to a certain node, shared memory is restarted on that node. This may take a few minutes.