package TestDB;
import java.sql.Connection;
import java.sql.DriverManager;
public class TestDB {
public static void testDB() throws Exception {
Class.forName("oracle.jdbc.driver.OracleDriver");
Connection con = DriverManager.getConnection("jdbc:oracle:thin:127.0.0.1:1521:LzOracle",
"scott", "tiger");
}
public static void main(String[] args) throws Exception{
testDB();
}
}
但是一运行抛出下面的异常
Exception in thread "main" java.sql.SQLException: Io 异常: Connection refused(DESCRIPTION=(TMP=)(VSNNUM=168821248)(ERR=12505)(ERROR_STACK=(ERROR=(CODE=12505)(EMFI=4))))
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:134)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:179)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:333)
at oracle.jdbc.driver.OracleConnection.<init>(OracleConnection.java:404)
at oracle.jdbc.driver.OracleDriver.getConnectionInstance(OracleDriver.java:468)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:314)
at java.sql.DriverManager.getConnection(DriverManager.java:582)
at java.sql.DriverManager.getConnection(DriverManager.java:185)
at TestDB.TestDB.testDB(TestDB.java:10)
at TestDB.TestDB.main(TestDB.java:15)
我的帐号密码肯定是对的,端口号也没改过.本机地址写127.0.0.1没问题 吧,可是为啥有异常呢,高手指点下.