If manually executing "sqlplus / as sysdba", then sqlpus will not return any message and hung.

From ps command result,  there are no background processes generated.

The user id/group settings and permission for $ORACLE_HOME/bin/oracle at the issue node are same with the normal node.  

strace -o result.txt -f sqlplus '/ as sysdba'"

MOS：Doc ID 2899115.1http://www.cndba.cn/hbhe0316/article/131433http://www.cndba.cn/hbhe0316/article/131433

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