相关集群日志信息：
百度网盘

数据库版本11.2.0.4 PSU 1601
OS :HP-UX 11.31
$ crsctl check crs
CRS-4638: Oracle High Availability Services is online
CRS-4535: Cannot communicate with Cluster Ready Services
CRS-4529: Cluster Synchronization Services is online
CRS-4533: Event Manager is online
两边的数据库是open状态，能正常使用
SQL> select inst_id,INSTANCE_NAME,status from gv$instance;
INST_ID INSTANCE_NAME STATUS
---------- ---------------- ------------
2 ocdb2 OPEN
1 ocdb1 OPEN
crs_stat -t直接报错。

$ crsctl check crs
CRS-4638: Oracle High Availability Services is online
CRS-4535: Cannot communicate with Cluster Ready Services
CRS-4529: Cluster Synchronization Services is online
CRS-4533: Event Manager is online
看来仅仅是CRS 服务由问题或挂了， 而CSS是好的， 这说明 集群是可以通信的。 crs_stat 依赖于CRS SERVICE。 对于该场景 保持不动，等时间重启应是上策。