Question

嗨，我是初学者和现在我已经在我的Windows 7 64位操作系统中安装了Oracle 10g Express Edition Release 2并尝试执行Hibernate程序但是我得到以下异常可以帮助我一些

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中： -

<?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>

Answer 1

它显示您的实例名称为xe，请确保xe是您已安装实例。

如果没有，请更改实例名称。

不是服务器名称。

Answer 2

错误消息显示给出的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;

或键入sqlplus命令提示符

show parameter instance_name;

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

hibernate.cfg.xml中： -

2 个答案: