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Blogger tested on Oracle 11g R2 (test date: 2017.10.30):Log in to Oracle with SYS and execute the following two statements: Select * from WHERE like ' CONNECT '; -- Querying permissions for the Connect role Select * from WHERE like ' RESOURCE '; -- querying permissions for resource rolesConnect role:--is the typical right to grant the end
deletions cannot be controlled to columnsInsert update insert with commit requiredTransfer of permissionsSystem permissions are passed:Grant ALTER TABLE to A with admin option;Then a can pass this permission to B, if you want B can also be passed down so can also take with admin optionGrant ALTER TABLE to B;Object permissions are passed:Grant SELECT on Mytab to A with GRANT option;Then a can give the SELECT permission in table Mytab to B, and if b wa
Oracle uses a cursor to delete all record scripts in all user data tables. oracle cursor
Application Scenario: because the data in the database involves confidential information, we hope to delete all the data at a time and only k
Tags: show img src Select View Execute Limited Grant WordDescription: Enables user selame to query all tables in user ame (cannot be added and deleted)1. Create User SelameCreate user selame identified by Password;2. Set
Oracle uses a cursor to delete all record scripts in all user data tables
Application Scenario: because the data in the Oracle database involves confidential information, we hope to delete all the data at a time and only keep the
Label:Application scenario: Because the data in the database involves confidential information, I hope to delete all the data at once, and keep the data table structure for the new project development program.Test Result: All data is deleted after queryThere is a problem: data table If there is a foreign key, the following script may be unsuccessful, please delete or filter out the table yourself, seeHow to
When using PLSQLDeveloper to restore the backup, the backup was accidentally restored to the system user, so there was no unexpected success. At this time, my heart is broken.
When PL/SQL Developer is used to restore the backup, it accidentally restores the backup to the system user, so there is no unexpected success. At this time, my heart is broken.
When PL/SQL Developer is used to recover the backup
Task: grant the select permission (or insert permission) of all userA tables (or views) to userB.
Basic Idea: Log on With usera. select 'Grant insert on' | table_name | 'to userb;' from user_objects; to execute all generated SQL statements.
Of course, there is a quicker way: Save the following statement in d: \ a. SQL,
Oracle uses a cursor to add a primary key statement to all user tables. oracle cursor
Application Scenario: adding an auto-increment primary key to a data table can speed up data table access, and is the fastest in integer indexing. This program is suitable for running when the Ora
First to create a AA user:
sys@orcl> create user AA identified by AA;
User created.
To view user rights with an HR user login:
Sys@orcl> Conn Hr/hr
Connected.
Hr@orcl> select * from Session_privs;
Privilege
----------------------------------------
CREATE session
AL
1, if there is a Plsql client, you can use the user login, select all the table right-click Drop.2. If you have permission to delete a user, you can:[SQL]View Plaincopy
Drop user user_name cascade;
Add the cascade can delete the user data.Delete and then creat
First, login issues1, forget the user name password:(1) Default User name password:System/manager Sys/change_on_install Scott/tiger(2) CMD log in as a system administrator:C:\users\samsung>sqlplus System/manager as SysdbaView all User:Sql> select username from dba_users;To modify a user password:Sql> alter
1. If you have permission to delete a user, you can:Drop user user_name cascade;Add the cascade can delete the user data.Delete and then create the user. --Create Admin user user name identified by password default tablespace spac
Tags: Oracle user Information role1. View All Users:SELECT * from Dba_users;SELECT * from All_users;SELECT * from User_users;2. View user or role system permissions (System permissions that are directly assigned to a user or role):SELECT * from Dba_sys_privs;SELECT * from Us
The following statements are used to query all your tables in oracle. If you are interested in oracle queries, take a look.
Select * from all_tab_comments-- Query tables and views of all users
Select * from user_tab_comments-- Query the user's tables and views
Select * from all_col_comments-- Query the column names and
1. View All Users:SELECT * from Dba_users;SELECT * from All_users;SELECT * from User_users;2. View user or role system permissions (System permissions that are directly assigned to a user or role):SELECT * from Dba_sys_privs;SELECT * from User_sys_privs; (View the permissions that the current user has)3. View the permi
The following statements are used to query all your tables in Oracle. If you are interested in oracle queries, take a look. Select * fromall_tab_commen
The following statements are used to query all your tables in Oracle. If you are interested in
Label:1. View All Users:SELECT * from Dba_users;SELECT * from All_users;SELECT * from User_users; 2. View user or role system permissions (System permissions that are directly assigned to a user or role):SELECT * from Dba_sys_privs;SELECT * from User_sys_privs; (View the permissions that the current user has) 3. View t
c.table_name = table to queryQuery the column name of the FOREIGN KEY constraint:SELECT * from User_cons_columns cl where cl.constraint_name = FOREIGN key NameQuery the column name of the key referencing the table:SELECT * from User_cons_columns cl where cl.constraint_name = foreign key reference table key name5. Querying all columns of the table and their propertiesSelect t.*,c.comments from User_tab_columns t,user_col_comments c where t.table_name
1, if there is a Plsql client, you can use the user login, select all the table right key drop can be.2, if you have the right to delete users, you can:
Drop user user_name cascade;
Cascade can be added to the users of all the data deleted.
Delete and then create the user
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