Some time ago I posed this question to IBM and as I understand it their
response was that an active session will not cancel until it complete
its current task. For example, if a process or session has requested a
tape/volume and you issue a command to cancel the session and/or process
TSM will queue your cancel request and wait on the mount to complete. My
understanding is that this is by design to avoid interrupting a task
that could have undesirable consequences.

~Rick

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Mehdi Salehi
Sent: Wednesday, August 18, 2010 5:55 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: [ADSM-L] cancel a session with MediaW

Hi,
how to cancel a session with media wait in a manual library? "can sess"
does
not work. TSM keeps the waiting session even if you restart the client
node.
(TSM server 5.3 in AIX 5.3) The session will die after the 60 minutes of
timeout.

Thanks