how to limit the max dialog no that one user can use at the same time?

Hi,

I meet one performance problem that one user can open 6 sessions in the GUI and he/she can run 6 reports at the same time witch could occupy 6 dialogs in the sap R/3 instance. It makes poor performance for other users.

Would you pls tell me how to limit the no. of sessions one user can create at the same time or how to limit the no. of dialogs one user can occupy at the same time?

Thanks a lot!

I used this parameters in the default profile as blew:

rdisp/rfc_check 1

rdisp/rfc_use_quotas 1

rdisp/rfc_max_own_used_wp 20 (means: 20%)

It still didn't work.

Sean