FP4110-1# scope security Software Error:Exception during execution:[Error:Timed out communicating with DME 什么问题导致的？怎么解决？

告警信息： Failure in syncing messages to standby for vdc 1 causing standby to resetvdc 1: HA SYNC failure onsap=390 (errno: -105) From Standby: mts_tcp_recv_enqueue_begin_data(): unable to allocate MTS buffer! Failure in syncing messages to standby for v...

没有多用户同时登录的情况，出现上述问题，是什么原因？