3329104 - SM21 entry R2K: "Resource usage exceeds limit (Resource=LOGON, Limit=xxx, Curr.=xxx)"

A single user ID is creating a large number of sessions, until new sessions start being rejected.

At the transaction SM21, the following entry is logged:

[date and time]    [instance name]    DIA    001    [client]    [user ID]        R2K    Resource usage exceeds limit (Resource=LOGON, Limit=xxx, Curr.=xxx)

For Web Applications the message is :  "429 Too many logons"

The trace file of the corresponding work process (dev_wXX) has the following entries, at the same timestamp as the SM21 entry:

M [date and time]
M  ***LOG R2K=> DpILogonCntTabChange, Resource Check () [dpLogonCntTa 622]
M  *** WARNING => DpILogonCntTabChange: limit exceeded for [client and user ID]  , logons=xxx, GUI=0, HTTP=0, APC=0, APC Conn=0, RFC=xxx, rejects=xxx, rejects_per_sec=1 [dpLogonCntTa 837]
M  {root-id=00000000000000000000000000000000}_{conn-id=00000000000000000000000000000000}_0
M  *** WARNING => ThResourcesOfCurrentUserExceeded: DpLogonCntTabChange failed (10) [thSessionInf 674]
N  *** WARNING => DyISigni(): resources for currrent user exceeded [sign.c       2229]

• SAP NetWeaver ABAP system
• SAP NetWeaver Application Server for SAP S/4HANA
• ABAP PLATFORM - Application Server ABAP
• Operating System independent
• Database independent

rdisp/user_resource_limit, WARN, REJECT, 429 too many logons  , KBA , BC-CST-DP , Dispatcher, Task Handler , BC-MID-RFC , RFC , BC-CST , Client/Server Technology , BC-CCM-BTC , Background Processing , BC-SEC-LGN , Authentication , Problem