On Thu, 21 Feb 2008 07:25:23 -0600, Chase, John 
<[EMAIL PROTECTED]> wrote:

>> -----Original Message-----
>> From: IBM Mainframe Discussion List On Behalf Of Mark T. Regan, 
K8MTR
>>
>> The problem with using multiple emulator sessions is that if
>> you lose your network connection to the mainframe, you also
>> lose all your tn3270 sessions too. ...
>
>While YMMV, I believe the risk of network connection loss is
>sufficiently low that I remain a fan of multiple session windows.  I
>typically have six or seven session windows open concurrently.
>...

In my opinion (for what it's worth) the issue is more than the 
inconvenience of your lost sessions.  It is also the error recovery 
done by the application when there is an outage.  The recovery 
done in a session manager is typically much lighter than the recovery
done in a transaction processor - no transaction backout to do.
And (assuming multipe sessions per user) there are fewer sessions
to terminate.  If you are talking hundreds (or thousands) of sessions
a session manager can save you LOTS of cycles during a major 
network outage.  And if the transaction processor's recovery is not
robust enough, the session manager can save you from corrupted
databases, too.

Pat O'Keefe 

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