對于oracle10g來說:
1.如果不記得sys使用者的密碼了,采用如下方法可以修改密碼:
(1)打開cmd,輸入sqlplus /nolog,回車。
(2)輸入“conn / as sysdba”;
(3)輸入“alter user sys identified by 新密碼;”(新密碼必須以字母開頭,另外每條SQL語句後得分号不能忘)
其他使用者方式同理
2.(1)在cmd中啟動sqlplus;
(2)用sqlplus/as sysdba登入,使其連接配接到:
Oracle Database 10g Express Edition Release 10.2.0.1.0 - Production
(3)執行ALTER USER DBSNMP ACCOUNT UNLOCK;
(4) 從新用SQL/PLUS登入,設定使用者名、密碼;
附:Oracle 10g 預設安裝帶來的使用者名/密碼
Username | Password | Description | See Also |
CTXSYS | The Oracle Text account | Oracle Text Reference | |
DBSNMP | The account used by the Management Agent component of Oracle Enterprise Manager to monitor and manage the database | Oracle Enterprise Manager Grid Control Installation and Basic Configuration | |
LBACSYS | The Oracle Label Security administrator account | Oracle Label Security Administrator's Guide | |
MDDATA | The schema used by Oracle Spatial for storing Geocoder and router data | Oracle Spatial User's Guide and Reference | |
MDSYS | The Oracle Spatial and Oracle interMedia Locator administrator account | ||
DMSYS | The Oracle Data Mining account. | Oracle Data Mining Administrator's Guide Oracle Data Mining Concepts | |
OLAPSYS | MANAGER | The account used to create OLAP metadata structures. It owns the OLAP Catalog (CWMLite). | Oracle OLAP Application Developer's Guide |
ORDPLUGINS | The Oracle interMedia user. Plug-ins supplied by Oracle and third party format plug-ins are installed in this schema. | Oracle interMedia User's Guide | |
ORDSYS | The Oracle interMedia administrator account | ||
OUTLN | The account that supports plan stability. Plan stability enables you to maintain the same execution plans for the same SQL statements. OUTLN acts as a role to centrally manage metadata associated with stored outlines. | Oracle Database Performance Tuning Guide | |
SI_INFORMTN_SCHEMA | The account that stores the information views for the SQL/MM Still Image Standard | ||
SYS | CHANGE_ON_INSTALL | The account used to perform database administration tasks | Oracle Database Administrator's Guide |
SYSMAN | The account used to perform Oracle Enterprise Manager database administration tasks. Note that SYS and SYSTEM can also perform these tasks. | ||
SYSTEM | Another account used to perform database administration tasks. |