How to release integrated ITS session memory ?

Hello,

Sap release : ECC6 SP12

Integrated ITS 7.00

We receive incoming requests to our SAP server from an EP6 portal. The "SAP Gui for HTML" sessions are then displayed in SM04/SITSPMON transactions.

From yesterday, we had the following erreor mesage, every time a user is lauching a new request :

ITS, New user session denied due to memory bottleneck.

ITS, User session could not be created

Transaction Canceled ITS_P 027 ( )

We found in SM04, that a user that was no more connected , was still displayed using 3Gb of memory ...

The user sessions has been killed in sm04, and the user session is no more displayed,  but still the memory bottleneck stills avoid any ITS connection.

In transaction SITSPMON, the session is still here

9427

Session - Memory Used

-

-

-

Sess. & Templ.   782.825.098 Bytes   

Amount of em/global_area_MB used (1024 MB)

Sessions:      1     782.370.074 Bytes    782370.074 Bytes/Session

How can I release the memory, without having to shutdown the sap server ?

thank you !

Any useful help would be appreciated.

Regards.