java.sql.SQLException：侦听器拒绝连接并出现以下错误：ORA-12505

Posted 2023-03-15

【中文标题】java.sql.SQLException：侦听器拒绝连接并出现以下错误：ORA-12505

【英文标题】：java.sql.SQLException: Listener refused the connection with the following error: ORA-12505

【发布时间】：2017-08-07 06:49:04

【问题描述】：

嗨，我是初学者，目前我已经在我的 Windows 7 64 位操作系统中安装了 Oracle 10g Express Edition Release 2 并尝试执行 Hibernate 程序，但我遇到了异常情况，请有人帮助我

WARNING: Could not obtain connection metadata
java.sql.SQLException: Listener refused the connection with the following error:
ORA-12505, TNS:listener does not currently know of SID given in connect descriptor
The Connection descriptor used by the client was:
localhost:1521:xe

    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)
    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:261)
    at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:387)
    at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:414)
    at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:165)
    at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:35)
    at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:801)
    at java.sql.DriverManager.getConnection(DriverManager.java:571)
    at java.sql.DriverManager.getConnection(DriverManager.java:187)
    at org.hibernate.connection.DriverManagerConnectionProvider.getConnection(DriverManagerConnectionProvider.java:110)
    at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:76)
    at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:1933)
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1216)
    at test.Test.main(Test.java:11)

hibernate.cfg.xml:-

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration SYSTEM 
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">

<hibernate-configuration>
<session-factory>
 <property name="connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
 <property name="connection.url">jdbc:oracle:thin:@localhost:1521:xe</property>
 <property name="connection.username">scott</property>
 <property name="connection.password">tiger</property>
 <property name="connection.pool_size">10</property>
 <property name="dialect">org.hibernate.dialect.OracleDialect</property>
 <property name="hbm2ddl.auto">create</property>
 <property name="show_sql">true</property>
 <mapping resource = "resources/Dept.hbm.xml"/>
 <mapping resource = "resources/Employee.hbm.xml"/>
 <mapping resource = "resources/Student.hbm.xml"/>

</session-factory>
</hibernate-configuration>

【问题讨论】：

在windows中进入Services查看OracleXETNSListener和OracleServiceXE是否处于运行状态。

在服务选项卡中没有用于运行它的 OracleServiceXE 选项

让我们continue this discussion in chat.

【参考方案1】：

说明你的实例名是xe，确定xe是你安装的实例。

如果没有，请更改实例名称。

不是服务器名称。

【讨论】：

如何找到实例名称？

【参考方案2】：

错误消息显示给定的 SID 未知。请通过连接到任何架构并运行以下任何查询来确保已安装实例的 SID 为“xe”

select instance from v$thread;

select name from v$database;

或在sqlplus 命令提示符下输入

show parameter instance_name;