找到一个文本文件：
E:\oracle\NETWORK\ADMIN\listener.ora 还一个在同路径下的tnsnames.ora文件（这是我自己的安装路径）
打开listener.ora：
# listener.ora Network Configuration File: E:\oracle\NETWORK\ADMIN\listener.ora# Generated by Oracle configuration tools.SID_LISToracle账号_LISTENER =(SID_LIST =(SID_DESC =(SID_NAME = PLSExtProc)(ORACLE_HOME = E:\oracle)(PROGRAM = extproc))(SID_DESC =(GLOBAL_DBNAME = orcl)(ORACLE_HOME = E:\oracle)(SID_NAME = orcl)))LISTENER =(DESCRIPTION =(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521)))
标红的是我新加的，然后重启oracle服务就行了。