使用java连接oracle数据库?报错
直接上代码：
<%!public static final String DBDRIVER = "oracle.jdbc.driver.OracleDriver" ;
public static final String DBURL = "jdbc:oracle:thin: @localhost :1521:yangyihong" ;
public static final String DBUSER = "scott" ;
public static final String DBPASSWORD = "tiger" ;
%>
<%
Connection conn = null ;
PreparedStatement pstmt = null ;
ResultSet rs = null ;
%>
<%
Class.forName(DBDRIVER) ;
conn = DriverManager.getConnection(DBURL,DBUSER,DBPASSWORD) ;
String sql = "SELECT empno,ename,job,hiredate,sal,comm FROM emp ORDER BY empno" ;
pstmt = conn.prepareStatement(sql) ;
rs = pstmt.executeQuery() ;
%>
而此时，会报错，提示如下
java.sql.SQLException: Listener refused the connection with the following error:ORA-12518, TNS:listener could not hand off client connection
The Connection descriptor used by the client was:
localhost:1521:yangyihong
小弟已经进入到D:\oracle\product\10.2.0\db_1\NETWORK\ADMIN\tnsnames.ora目录下，确认了我的文件内容为
# tnsnames.ora Network Configuration File: D:\oracle\product\10.2.0\db_1\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.
YANGYIHO =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = LBDZ-03081718)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = yangyihong)
)
)
EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
)
(CONNECT_DATA =
(SID = PLSExtProc)
(PRESENTATION = RO)
)
)
按照上面内容，localhost:1521:yangyihong这个写法应该没错啊。另外，各种服务也都已经启动了，通过sqlplusw可以正常启动数据库。求大神解救。
写回答
-
https://developer.aliyun.com/profile/5yerqm5bn5yqg?spm=a2c6h.12873639.0.0.6eae304abcjaIBOracle中的<spanstyle="font-family:'WenQuanYiMicroHeiMono','WenQuanYiMicroHei','MicrosoftYaheiMono','MicrosoftYahei',sans-serif;font-size:14px;line-height:22px;background-color:#FFFFFF;">tnsnames.ora文件内<spanstyle="font-family:'WenQuanYiMicroHeiMono','WenQuanYiMicroHei','MicrosoftYaheiMono','MicrosoftYahei',sans-serif;font-size:14px;line-height:22px;background-color:#FFFFFF;">YANGYIHO和你的java的连接的URL中的<spanstyle="font-family:'WenQuanYiMicroHeiMono','WenQuanYiMicroHei','MicrosoftYaheiMono','MicrosoftYahei',sans-serif;font-size:14px;line-height:22px;background-color:#FFFFFF;">yangyihong对不上。谢了！果真是这原因！
<spanstyle="font-family:微软雅黑,Verdana,sans-serif,宋体;font-size:14px;line-height:22px;background-color:#FFFFFF;">jdbc:oracle:thin: <atarget="_blank"rel="nofollow">@<spanstyle="font-family:微软雅黑,Verdana,sans-serif,宋体;font-size:14px;line-height:22px;background-color:#FFFFFF;">YANGYIHO
<spanstyle="font-size:14px;line-height:22px;">或者<atarget="_blank"rel="nofollow">
<spanstyle="font-family:微软雅黑,Verdana,sans-serif,宋体;font-size:14px;line-height:22px;background-color:#FFFFFF;">jdbc:oracle:thin: <atarget="_blank"rel="nofollow">@<spanstyle="font-family:微软雅黑,Verdana,sans-serif,宋体;font-size:14px;line-height:22px;background-color:#FFFFFF;">LBDZ-03081718<spanstyle="font-family:微软雅黑,Verdana,sans-serif,宋体;font-size:14px;line-height:22px;background-color:#FFFFFF;">:1521:<spanstyle="font-family:微软雅黑,Verdana,sans-serif,宋体;font-size:14px;line-height:22px;background-color:#FFFFFF;">yangyihong
2020-06-22 15:41:14赞同 展开评论 打赏
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