Solution : https://service.sap.com/sap/support/notes/1494798 (SAP Service marketplace login required)
Key words :
abap request queue reached 90%, rdisp/queue_lock_level = 2 solution workaroundthere, -> information -> queue info, rdisp/queue_lock_level reason, process dispatcher queues, lower patch level, sp patch level, rdisp/queue_lock_level = 2, patch level, file dev_disp
Related Notes :
1304197 | Hanging enqueue processes; duplicate releases of WPCA blocks |