老难题:连接oracle 时出现的异常java.sql.SQLException: Io 异常: The Network Adapter could not establish the connection
java.sql.SQLException: Io 异常: The Network Adapter could not establish the connection
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:124)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:161)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:273)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:318)
at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:343)
at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:147)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:31)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:545)
at java.sql.DriverManager.getConnection(DriverManager.java:582)
at java.sql.DriverManager.getConnection(DriverManager.java:185)
at DBC.<init>(DBC.java:25)
at DBC.main(DBC.java:15)
这个问题很难解决呀,网上搜了一天也没解决掉,故来此地求助。
conn = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1512:orcl", "scott", "tiger");
原因:突然连oracle 时,就出现这个异常了,以前也正常,
并且现在 可以用 ODBC 桥接的方式连接成功。就是上面的方式连接有异常。
最后我把Oracle 重装了一次,就可以连接了,但我把项目换到另一台机子连接时,又出现了此异常,真是很郁闷呀!
希望高手帮帮忙呀!