Login without password: sqlplus/as sysdba
View all current databases: select name from V$database;
View current database connection User: Show user
View all tables for the current user: Select table_name from All_tables;
View table structure: DESC table name
New Database User: Create user username indentified by ' password '
Authorization: Grant permissions/role to user name
Change database user password: Alter user username identified by ' new password '
View all users within the database: SELECT * FROM Dba_users
View all users that can be managed: SELECT * from All_users
View Current User information: SELECT * FROM User_users
Export table structure and data: Exp username/password @ network connector file=d:\daochu.dmp full=y
Import table structure and data: IMP username/password @ network connector file=d:\daochu.dmp
This article is from "Little bin 30" blog, please be sure to keep this source http://xiaobin30.blog.51cto.com/9438146/1791966
SQL statements for Oracle