Session handling

Session limitations

The HMC Enhanced+ interface does not support disconnected sessions like the HMC Classic interface. In the HMC Enhanced+ interface, a session logoff and a session disconnect are both considered as a session logoff. This means that you cannot reconnect to the same session to resume your task or tasks that were initiated from a previous session. Every login through the HMC Enhanced+ interface creates a new session.

1. If you initiate long running tasks from the HMC Enhanced+ interface and then log off from the session, the long running tasks continue to run in the background. However, when you log in again, a new session is created and the task progress panels (which helps track the progress of the previous tasks) are no longer available. In this scenario, if you need to check the progress of the tasks that were initiated from a previous session, you can run the respective command line interface (CLI) commands, check the state of the managed resource, or check the console event logs.
   Note: You can use the HMC Classic interface to perform long running tasks to avoid these limitations. Some examples of long running tasks include the following tasks:

   System management for servers:

   • Deploy system plan
   • Code update
   • Hardware - Prepare for hot repair or upgrade

   System management for partitions:

   • DLPAR memory in large units in the order of Terabytes
   • Live Partition Mobility (LPM)
   • Suspend or resume

   HMC management:

   • Backup management console data
   • Restore management console data
   • Save upgrade data
2. If you fail to reauthenticate within the time that is specified in the verify timeout settings, you are automatically logged off from the current session.
3. The idle timeout user property task is not functional in the HMC Enhanced+ interface. The HMC Enhanced+ interface uses the default value of 0 for the idle timeout setting. If you set a different value for this setting, it is ignored.
   Note: Session, idle, and verify timeout properties are set for a user and it can be different for different users on the same HMC.