What is the benefit of having several cas sessions running?

[acordes]

I haven't cared so far about this issue. I use cas actions and cas programming all over. 

But I wonder why I have 6 sessions running. 

An what is the use case for having several active sessions?

I suppose that if I do not manage the sessions actively I'll face sooner or later performance issues. 

When I'm starting my day I run: 

/* Init CAS library; */
cas mySession sessopts=(caslib=casuser timeout=1800 locale="en_US");
caslib _all_ assign;
cas mySession sessopts=(caslib="casuser");

But I do not close sessions. I turn off my laptop and that's it.

I think that's bad practice. 

I would like to know what I'm missing out not understanding and dealing properly with the sessions. 

80   proc cas;
81      session mySession;
82      session.sessionStatus result=res;    /* 2 */
83   
84      print "Session status:";             /* 3 */
85      print "   State:         " res["state"];
86      print "   Connections:   " res["number of Connections"];
87      print "   Timeout:       " res["Timeout"] "minutes";
88      print "   Action Status: " res["ActionStatus"];
89      print "   Authenticated: " res["Authenticated"];
90      print "   Locale:        " res["locale"];
91   run;
NOTE: Active Session now mySession.
Session status:
   State:         Connected
   Connections:   6
   Timeout:       1800 minutes
   Action Status: Action is active
   Authenticated: Yes
   Locale:        en_US
92   quit;
NOTE: PROCEDURE CAS used (Total process time):
      real time           0.00 seconds
      cpu time            0.01 seconds

[Patrick]

I'm wondering why your log says the timeout value is in minutes!? If it were in seconds as per docu TIMEOUT= Session Option then you just walking away at the end of the day shouldn't cause such issues.

Timeout:       1800 minutes

May-be worth looking a bit closer into the cause for this being minutes together with your SAS Admin and/or SAS Tech Support.