Discover oracle create session privilege, include the articles, news, trends, analysis and practical advice about oracle create session privilege on alibabacloud.com
full privileges, is the highest system privilege, and only the DBA can create the database structure.RESOURCE: A user with RESOURCE permission can only create entities and cannot create a database structure.Connect: A user with connect permission can only log on to Oracle,
is not started.Why is wldev not started? How does one specify the database to be started?
Start a specified databaseHere is only one method.In sqlplus command mode, When you log on with sysdba, the system logs on to the database specified by the oracle_sid environment variable by default. In the current environment, linuxdb is started by default because Oracle Login User oracle_sid = linuxdb. The solution is to set oracle_sid = wldev before executin
disk are subject to the limit specified in the DEFAULT Pro File.
A single call made by the user cannot read more than, data blocks from memory and disk.
A Single session cannot allocate more than kilobytes of memory in the SGA.
In a single session, the total resource cost cannot exceed 5 million service units. The formula for calculating, the total, resource cost was specified by the ALTER RESOURCE C
Create user [username] identified by [Password] Create a new user
Grant permission 1. Permission 2... to grant the user the permission to create a user
Ex: grant create session to [username] at this time, you can only connect to the database
Grant connect, resource to
Label:How do I delete a user in Oracle? Using drop user in Oracle to remove users, the user's objects are also deleted if you use the drop user cascade. To achieve the effect of deleting a user without affecting the use of objects under the user, you can use ALTER user Username account lock to lock the user. Create table spaces, users, and authorize and revoke
directly;
Begin
Send_mail (' Test content ');
End;
/
ORA-29278:SMTP Temporary error: 421 Service not available
ORA-06512: in the SYS. Utl_smtp ", line
ORA-06512: in the SYS. Utl_smtp ", line
ORA-06512: in the SYS. Utl_smtp ", line 139
ORA-06512: In" SYS. Utl_mail ", line 405
ORA-06512: In" SYS. Utl_mail ", line 594
ORA-06512: In line 2
The first time I saw this error was very shocking, because the entire mail sent stored procedures are first used pl/sql directly test the code, then encapsu
command to check the Global Database Name:
SELECT * FROM GLOBAL_NAME;
You can use the following statement to modify the parameter value:
Alter system set GLOBAL_NAME = TRUE/FALSE;
Connect and communicate between oracle databases.The syntax for creating a database link is as follows:CREATE [PUBLIC] database link link
Connect to username identified by password
USING 'string string'
Where:-- Demona is the connection string created with net8 easy config
* puls
Second, log in with system/manager
Third, create user username identified by password (this step can be omitted if you have already created a user)
Fourth, grant create user, drop user, alter user, create any view,
Drop any view, EXP_FULL_DATABASE, IMP_FULL_DATABASE,
DBA, CONNECT, RESOURCE, create
Oracle tables cannot be DDL and stored procedures cannot be used to create processing methods, oracleddl
In the process of data migration, we will face two common hang scenarios:
1. You cannot modify or increase the length of a field in a table.
2. stored procedures cannot be overwritten.
Scenario 1: Add hang fields to the tableSession1:
Create table test as sele
Tags: lap update set for TIME range Dex minimum PreMany applications require a unique number to be used as the primary key value, so you can build code in your application to handle this requirement, or you can use a sequence to produce a unique number. If you want to improve the performance of some queries, you should consider creating an index, or you can enforce uniqueness on the collection of columns or columns with an index. You can use synonyms to provide an alternative name for the object
details, visit http://blog.csdn.net/tianlesoftware/archive/2009/10/23/425155.aspx.)
Then, when installing the Oracle database, we will have a sysdba user. For example, the user name and password are Scott/orcl. In this case, we need to create a normal user and use this user to import the SQL script of the table to the database system. To use sqlplus in this example, you need to go to the command line tool
Basic concepts:
1. Protection Mode: maximum protection, maximum performance, and maximum availability. The default value is the maximum performance.
2. physical and logical backup machines:
3. Online, archived, and standby redo logs
4. Log transmission, log application, and role switching services
5. DG is a feature of the Enterprise Edition. You can operate and deploy DG through sqlplus, dbmgrl, and OEM.
Software and Hardware requirements:
1. Same as the hardware platform
2.
DDL statements cannot be used directly in Oracle's stored procedures, such as CREATE, alter, DROP, truncate, and so on.That assumes that we want to create a temporary table in a stored procedure that can only use dynamic SQL statements:Create or replace procedure Pro as str_sql varchar2 (+); Begin -Creates a temporary table str_sql: = ' Create global temporary
check the Global Database Name:
SQL> SELECT * FROM GLOBAL_NAME;
You can use the following statement to modify the parameter value:
SQL> ALTER SYSTEM SET GLOBAL_NAME = TRUE/FALSE;
Connection and communication between oracle databases:
The syntax for creating a database link is as follows:
CREATE [PUBLIC] database link link_name
Connect to username identified by password
USING 'zytydic'
Where:
Zytydic is the
Create external table in Oracle
Oracle db allows you to query External tables in read-only mode. External tables can be stored on any storage device that can be read by oracle databases. The content of external tables is not saved in the database. db stores only the metadata of external tables, and db can query (join a
First, the concept of the user
Users, or user, is a popular way to access Oracle database "people." In Oracle, the user's various security parameters can be controlled to maintain the security of the database, these concepts include schemas, permissions, roles, storage settings, space quotas, access resource constraints, database auditing, and so on. Each user has a password that uses the correct user/pass
);Tips: The default date format for Oracle is: ' Dd_mon (eg:5 month)-yy/yyyy ';Change the default format for dates: Alter session set Nls_date_format = ' Yyyy-mm-dd ';
Insert a partial field
Insert into table name (column 1, column 2, column 3, ...) VALUES (value 1, value 2, value 3, ...) ;
Insert Null value
Insert into table name (column 1, column 2, column 3, ...) VALUES (value
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.