java.sql.sqlexception io exc_连接oracle数据库报java.sql.SQLException: Io 异常:

//2. 建立连接：

Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@10.248.13.5:2902:cmcc", "ngca",

"Cmcc_0111");  //报错在建立连接这一行

报错:

java.sql.SQLException: Io 异常: Size Data Unit (SDU) mismatch

at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)

at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:146)

at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:255)

at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:387)

at oracle.jdbc.driver.PhysicalConnection.(PhysicalConnection.java:420)

at oracle.jdbc.driver.T4CConnection.(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:582)

at java.sql.DriverManager.getConnection(DriverManager.java:185)

at jdbc.TestRegister.main(TestRegister.java:23)