SAP HANA Max Transactions Parameter

Dear Experts,

Does anyone know which SAP Hana DB Parameter controls the maximum number of transactions?

I'm currently facing this issue with our BW application server on HANA .

Connect to database failed, rc=1, rcSQL=128 (transaction error: exceed maximum number of transactions) (work process trace)

(HANA Studio)

Relaease info:

HANA :  Multinode  V.1.0.35

BW App Server 731 SP4 ,Kernel Release: 720/313

Thanks&Best Regards,

Bogdan