连接oracle超时

Data Source=(DESCRIPTION =(SDU = 32768)(enable = broken) (LOAD_BALANCE = yes)ADDRESS = (PROTOCOL = TCP)(HOST = gvu3825.austin.hp.com)(PORT = 1525)) ( (ADDRESS = (PROTOCOL = TCP)(HOST = gvu3824.austin.hp.com)(PORT = 1525)) (CONNECT_DATA =(SERVICE_NAME = GCSSDMP)) );User Id=Xianwei_gong;Password=500_Newpa：为什么会出现连接超时的问题，怎么解决？