Preface
1.my server is windowsxp
2.database is the oralce 10g
step
A.CHECK SERVER
1.win + r cmd sqlplsu / as system and test wehter or not use database
2.ipcong look up ip address
3.modify tnsnames.ora file ip address
3.login in again.
B.CLIENT-SIDE
0.ping ip address if loss packages and reflush/dns that can get new ip address
1.config path with tnsnames.ora
2.modify tnsnames.ora ip address
3.config the below path
