oracle客户端下载地址
https://www.oracle.com/database/technologies/instant-client/linux-x86-64-downloads.html
centos安装oracle client
https://blog.csdn.net/whowhowhoisimportant/article/details/124609876
通过RPM安装的BASIC,是没有TNSPING的,如果需要,可以从同版本的服务器端拷贝过来
(参考这里:https://stackoverflow.com/questions/39765601/how-to-install-tnsping)
'tnsping' to $ORACLE_HOME '$ORACLE_HOME/network/mesg/tnsus.msb' to $ORACLE_HOME/network/mesg