一套12C的数据库2节点RAC集群,节点2被down了,查看alertlog,报错如下: 2021-06-16T01:26:16.516936+08:00 Thread 2 advanced to log sequence 8611 (LGWR switch) Current log# 4 seq# 8611 mem# 0: +DATA/CB2QDB/ONLINELOG/group_4.305.992195801 Current log# 4 seq# 8611 mem# 1: +DATA/CB2QDB/ONLIN…