外汇风险管理的原则:Io 异常: The Network Adapter could not establish the connection

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Io 异常: The Network Adapter could not establish the connection

异常如下：

org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Io 异常: The Network Adapter could not establish the connection)
at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1225)
at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:880)
Caused by: java.sql.SQLException: Io 异常: The Network Adapter could not establish the connection
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:180)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:222)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:335)

主要原因：

1.可能是server.xml文件的DataSource配置出错。

(1).如果用到的是本机上的数据，本地数据源里的部分配置为： username="pcisv62" password="11" url="jdbc:oracle:thin:@localhost:1521:orcl"
(2).如果用到的是服务器上的数据，则数据源里的部分配置为： username="pcisv62" password="11" url="jdbc:oracle:thin:@dbserver:1521:corev6"

（dbserver为服务器的名字，corev6为服务器上Oracle的SID）

2.可能是oracle的tnsnames.ora文件配置出错。

oracle的安装目录E:\oracle\ora92\network\admin下的tnsnames.ora：
本地配置：
ORCL =
(DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 主机名)(PORT = 1521))
    )
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = ORCL)
    )
)

注意：这里的主机名是你计算机的名字。这个是我完整的计算机名称：A-8B6B98F164694.

或服务器配置：
COREV6_DBSERVER =
(DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = dbserver)(PORT = 1521))
    )
    (CONNECT_DATA =
      (SID = COREV6)
      (SERVER = DEDICATED)
    )
)

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