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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
DescriptionWhen a owner-not_owner_user that is not my_table This table tries to grant my_table permission, an error occurs:Error report:sql error:ora-01720:grant option does not exist for ' owner_schema '. My_table ' 01720. 00000- "grant option does not exist for '%s.%s '" *cause: A grant is being performed on a vi
Oracle database objects and user management
www.ncn.cnThe management and maintenance of the pattern object of Oracle DatabaseThis section focuses on the management and maintenance of schema objects for Oracle databases, which include table spaces, tables, views,
After installing MySQL, configure the environment variables, and then
Typing MySQL
Enter MySQL
Then you can
Use MySQL;
Select * from user;
To see all the users;
Execute script file under Mysql:
Mysql > Source xxx.sql;
1.1 Two ways to increase the user: (Turn)
There are 2 different ways to add users: by using the grant statement or by directly manipulating the MyS
Backup and restore of Oracle database users and tables can be done quickly and easily using the Plsql-developer tool.Full backup and recovery of Oracle database user data1. Backup1.1 pl/sql-> Tools, export user objects, optionsCom
Oracle Database full recovery and Incomplete recovery, and perform user management for multiple generations recovery, oracle user management
Comparison between full recovery and Incomplete recovery:
1. Full recovery: restores the databas
database must be in the Mount state and the restricted session is set. After the drop database Command is executed, Oracle automatically deletes the control file, data files recorded in the control file, and online redo log files. If spfile is used in the database, the spfi
management auto function.
I. E .:Log on to the database with sysdba and run the following SQL:
Drop tablespace ts_xxxIncluding contents and datafiles;Create tablespace ts_xxxLoggingDatafile '/Oracle/oradata/dbname/ts_xxx01.dbf' size 512 M ReuseAutoextend onNext 5120 KMinimum extent 512 KSegment space management autoDefault storage (Initialize 512 KNext 512 KPcti
Drop onTableName toZhangsan;//Grant Zhangsan permission to delete the specified table tableGrant Insert onTableName toZhangsan;//Grant Zhangsan the right to insert the specified tableGrant Update onTableName toZhangsan;//granting permissions to modify tablesGrant Insert(ID) onTableName toZhangsan; Grant Update(ID)
Label:One, Oracle six ways to connect In ①myeclipse Open Myeclipse,window----Show view----Other---Input DB click DB Browser Select Right-click New. The following page appears to fill in the relevant information: The Ojdbc6.jar package needs to be introduced here To test: ②: Web Connection first you need to open Oracledbconsole Service Enter the following address in the Web page: Https://localhost.localdomain:1158/em/console/logon/logon ③ Dynamic So
Oracle Database-level drop redolog is not dangerous. Some DBAs are afraid to delete the redo log in the production database, because they are worried that deleting the redolog group in the ACTIVE and ACITVE status will cause a database accident. In fact, if the redo logs in
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 User Sela
Label:Refer to MOS article:Unable to Drop a datafile from the tablespace Using Alter tablespace Command (document ID 1050261.1)Any of the following conditions cannot be datafile by a drop1) must be empty, otherwise it will be reported: Ora-03262:the file is non-empty. It is important to note that the meaning of non-empty is that there is a extent assigned to table instead of rows in the table.If you do not use dro
Tags: drop table and purge Actual example in oracle database: CREATE OR REPLACE PROCEDURE pro_droptable is C Ursor cur is SELECT table_name from user_tables where table_name like ' temptable% '; Drop_sql VARCHAR2 (1000); Table_number number; BEGIN SELECT COUNT (*) into Table_number from User_tables WHERE table_name like ' tem% '; for tbname in
In your database, online redo log files is multiplexed and one of theMembers in a group are lost due to media failure?How would recover the lost redo log member?A.import the last export of the database from theB.restore all the "the" group from the last backupC.drop the lost member from the database and then add a new mem ber to theGroupD.restore all the
, redo log files, and control files, the database also contains a parameter file (parameter file), a password file (password file), and an optional archive log file (archive log files).The ②oracle DB instance is a set of Oracle background processes/threads and the shared memory area allocated on the server.When Oracle
Oracle startup, tablespace creation, user, authorization, Database Import and Export tutorial
The most basic operation of a database is to import and export data and create tablespaces, users, and authorizations, today, we will also introduce the commands for Oracle startup,
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