???????????????
????????δ???oracle?????????δ???pl sql development??toad sql development??sql navigator???????????????????????oracle???????????????????????????????ORACLE?????????????????????????????????????????
????????????￡???????oracle??????е?sqlplus???????oracle???????????????
????1????oracle??????е?net manager????????????????????????IP?????????net manager???????????????????????????????ɡ?
????2????????????е???????
????3????????????е????????
????4????sqlplus??
??????1???????sys????????????????sys ????xxxxxx ???????????????????????? as sysdba???????ɡ?
??????2???????????????????????????xxx ????xxxxxx ???????????????????????????????ɡ?
???????????
????1??????????????????????????
????2?????????????????????????????????????????Net Configuration Assistant??????????????????????
????3??????????????????????????????·?????????????
???????-->????-->cmd
???????? ??sqlplus /nolog ???
???????? ??connect / as sysdba ???
??????????? : alter user system account unlock ???
???????????alter user system identified by manager
????4???????ж??????????????鵵??????????????鵵???￡?
????????dbastudio??????--???????---???鵵????
????5??????????????????????????oracle??????????????????????????????????????????????