脚本写法

#!/bin/bash
dbuser=dbuser
dbpwd=dbpwd!
dbname=dbname
# sqlplus $dbuser/"$dbpwd"  #监听为默认值
sqlplus $dbuser/"$dbpwd"@localhost:1521/$dbname << EOF
select sysdate from dual;
EOF

直接命令

sqlplus 'dbuser/"dbpwd"'  #监听为默认值
sqlplus 'dbuser/"dbpwd"'@localhost:1521/dbname