oracle exp实例
exp nam/pwd@ip:1521:databasename log=/tmp/export.log file=/tmp/oracle_database.dmp
./exp cmsuser/xyz@localhost:1521/cms40 file=/tmp/xy.dmp full=y
exp nam/pwd@ip:1521:databasename log=/tmp/export.log file=/tmp/oracle_database.dmp
./exp cmsuser/xyz@localhost:1521/cms40 file=/tmp/xy.dmp full=y