[英]Error in connecting oracle 11G in localhost using JDBC
import java.sql.*;
public class one {
public static void main(String[] args)
{
Connection conn=null;
Statement stmt=null;
try
{
Class.forName("oracle.jdbc.driver.OracleDriver");
conn=DriverManager.getConnection("jdbc:oracle:thin:@//localhost:1521/ecom","system","manager");
stmt=conn.createStatement();
String str="insert into country values(3,'bangladesh');";
int k=stmt.executeUpdate(str);
System.out.println(k);
}
catch(Exception e)
{
e.printStackTrace();
}
}
}
The only jar file I added to the class path is ojdbc6.jar
is there any other jar required for connecting with oracle 11g(11.2.0.1.0)
I am using eclipse as IDE 我添加到类路径的唯一jar文件是
ojdbc6.jar
是否有其他与oracle 11g(11.2.0.1.0)
连接所需的其他jar我正在使用eclipse作为IDE
here are the errors 这是错误
java.sql.SQLException: The Network Adapter could not establish the connection
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:412)
at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:531)
at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:221)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:503)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at one.main(one.java:17)
Caused by: oracle.net.ns.NetException: The Network Adapter could not establish the connection
at oracle.net.nt.ConnStrategy.execute(ConnStrategy.java:359)
at oracle.net.resolver.AddrResolution.resolveAndExecute(AddrResolution.java:422)
at oracle.net.ns.NSProtocol.establishConnection(NSProtocol.java:672)
at oracle.net.ns.NSProtocol.connect(NSProtocol.java:237)
at oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:1042)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:301)
... 7 more
Caused by: java.net.ConnectException: Connection refused: connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocket`Impl.doConnect(Unknown Source)
at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at oracle.net.nt.TcpNTAdapter.connect(TcpNTAdapter.java:141)
1) Please be sure database host name, port number, or database instance name are correct. 1)请确保数据库主机名,端口号或数据库实例名称正确。 2) Be sure the TNSListener has been started ( run lsnrctl start)
2)确保TNSListener已启动(运行lsnrctl start)
The connection string is malformed. 连接字符串格式错误。 It should be "jdbc:oracle:thin://@localhost:1521/ecom" Notice the transposition of // and @.
它应该是“ jdbc:oracle:thin:// @ localhost:1521 / ecom”。注意//和@的转置。
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