其实出现该问题就是监听或者服务没有配好。

G:\xiaowangzhenshuai\software\Oracle\product\11.2.0\dbhome_1\NETWORK\ADMINlistener.ora
SID_LIST_LISTENER =(SID_LIST =(SID_DESC =(SID_NAME = CLRExtProc)(ORACLE_HOME = G:\xiaowangzhenshuai\software\Oracle\product\11.2.0\dbhome_1)(PROGRAM = extproc)(ENVS = "EXTPROC_DLLS=ONLY:G:\xiaowangzhenshuai\software\Oracle\product\11.2.0\dbhome_1\bin\oraclr11.dll")))LISTENER =(DESCRIPTION_LIST =(DESCRIPTION =(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))(ADDRESS = (PROTOCOL = TCP)(HOST = wang)(PORT = 1521))))ADR_BASE_LISTENER = G:\xiaowangzhenshuai\software\Oracle

host = wang在这里查看

ORACLR_CONNECTION_DATA =(DESCRIPTION =(ADDRESS_LIST =(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521)))(CONNECT_DATA =(SID = CLRExtProc)(PRESENTATION = RO)))ORCL =(DESCRIPTION =(ADDRESS = (PROTOCOL = TCP)(HOST = wang)(PORT = 1521))(CONNECT_DATA =(SERVER = DEDICATED)(SERVICE_NAME = orcl)))

查看SERVICE_NAME。 select INSTANCE_NAME from v$instance;

成功！