Oracle uses on Delete cascade and on Delete set null to create a foreign key
This section describes how to use the default Oracle creation method when creating foreign key constraints. When you delete referenced data, the data cannot be deleted,
Add data records in ASP. NET + Oracle and set the sequence and trigger in Oracle for automatic ID increment. Remember that the sequence is not an index. No matter the ID in ASP. NET, the details are as follows:1. Create a sequence:Create sequence
ArticleDirectory
Steps
Viewing exceptions
Creating a goldengate exception handler to trap and log Oracle errors
Goldengate does not provide a standard exceptions handler. by default, a replicat process will abend shoshould any
Oracle
Company
It announced on Wednesday that it would increase its acquisition of BEA Systems to $8.5 billion, ending several months of debate over the value of Bea. Bea's board of directors has agreed to accept new bids.
Oracle 9i contains the XDB feature by default when creating a database. Once the database and listener are started, Oracle XDB includes HTTP and FTP services, listening to TCPPorts 8080 and 2100 conflict with the default ports 8080, such as JBoss
In Oracle, we can export data from the remote database server together with the object definition to a local DMP file, or import the DMP file from the local to a distant database server. This feature allows you to build several identical databases
Create a tablespaceCreate tablespace data01Datafile '/Oracle/oradata/DB/data01.dbf' size 500 mUniform size 128 K; # specify the area size as 128 K. If not specified, the default area size is 64 K.Delete a tablespaceDrop tablespace data01 including
Conclusion
Now that your database has been started and running, you can start to use ORACLE 10G. It is best to start using Oracle Enterprise Manager because it is completely rewritten and uses a Web-based interface. If you are not sure where to
141. How to quickly compile all views?
SQL> spool view1. SQL
SQL> select 'alter view' | tname |'
Compile; 'from tab;
SQL> spool off
Then run view1. SQL.
SQL> @ view1. SQL;
142. Solutions for ORA-01555 snapshot too old
Increase the minextents value,
833. all_mview_keys
Describes the name details of a materialized view from or indirectly referenced by a view image in the from list.
834. all_mview_refresh_times
Refresh time of the user-accessible materialized view.
835. all_mviews
All
New Features of Oracle 10 Gb --RMAN
Author:Fuyuncat
Source:Http://www.hellodba.com/
The RMAN Incremental backup scheme, Incremental Backup offline recovery, recovery preview, recovery from resetlogs, and file compression become more powerful after
Two time parameters are passed in when a stored procedure is used to query a project. The query content is like this.
v_sql1:=v_sql1||' and logtime between '''||t_starttime||''' and '''||t_endtime||''' ;
T_starttime and t_endtime are input
Keywords: ASP. NET, Oracle, database connection pool, performance bottleneck
Abstract: This article introduces the performance bottleneck caused by connection pool problems in connecting Oracle to Asp.net and the solution through a case I have
Problem descriptionIn SQL * Plus, how does one implement data replication between different tables, whether local or remote?Problem AnalysisThe Copy command in SQL * Plus allows you to copy data between a remote database, a local database, or an
Code transferred from http://brianyuzhao.iteye.com/blog/379823
Temporal Database is a time-based database. It not only processes the current database, but also processes the past and the future.
A temporal database is a database with built-in time
1. System. Data. oracleclient and system. Data. oledb namespacesAlthough the classes in the two namespaces can access the Oracle database. data. the class efficiency of the sqlclient namespace is higher than that of the system. data. the class in
Precautions for migration from MySQL to Oracle
2001-09 Yu Feng has many application projects. At the beginning, MySQL Databases can basically meet various functional requirements. As the number of application users increases, the amount of data
In a recent project, I encountered a problem similar to the following (to facilitate the elaboration, I made a proper simplification ):Dim strsql as stringFor I = 0 to nStrsql = "Update table set name = 'Wayne 'Where name =: strname"Dim cmd as new
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.
A Free Trial That Lets You Build Big!
Start building with 50+ products and up to 12 months usage for Elastic Compute Service