Posts Tagged SQL database

NaggieHow to recover a corrupt MS SQL Sever database

Monday, May 3rd, 2010

MS SQL Server is a relational database management system (RDBMS), which is specifically developed to be used in the enterprise environment. It provides increased productivity, efficiency, availability, and administrative ease to your organization.

It’s the case with most of the applications it too can face some errors that may lead to data corruption. The data corruption cases may arise because of various issues such as power surges, virus infections, human errors, abrupt shutdown when the database is open, etc. In such cases, you should replace the database with an updated backup. And if the backup is not updated and you need the data urgently, then you should use an SQL MDF repair tool that will help you to repair SQL database.

Let’s consider a scenario wherein you have got MS SQL Server installed on your system, and one day when you open the SQL Server database, it fails to open. An error message is displayed.

“Server can’t find the requested database table.”

Once you encounter this error message, you are unable to access the database.

Cause: Here the error is that the SQL database is corrupt and, thus, inaccessible. It may have got corrupt because of various reasons such as virus infections, human errors, power surges, abrupt system shutdown when the database is open, etc.

Resolution: If the SQL database is not a complex one and there isn’t huge amount of data, then you should try and rebuild the database. However, if the database is complex and contains huge amount of data, then you should consider using a third-party sql server repair application for mdf repair. Such tools are read-only in nature and do not overwrite the data while scanning the databases using fast yet sophisticated algorithms. Also, these tools have rich interface and enable you to repair the database yourself without the intervention of an expert.

SQL Recovery software is an MS SQL repair tool that is able to repair SQL databases created in MS SQL Server 2000, 2005, 2008. It can recover all kinds of database components such as tables, defaults, stored procedures, triggers, views and rules.

In addition, it can recover database constraints such as primary key, foreign key, unique key, and check. In addition to all this, it can repair a database even if it is not repairable by the DBCC CHECKDB command. This tool is compatible with Windows 7, Vista, 2003 Server, XP, 2000, and NT.

Tags: , , , , ,
Posted in Expert's Opinions, Purely Technical | No Comments »

NaggieDBCC CHECKDB unable to resolve SQL Database corruption

Thursday, April 22nd, 2010

The logical and physical integrity of all SQL Server database tables is performed by DBCC CHECKDB command. The command performs and divides its operations in three different phases.

The first phase checks the consistency of the allocation structures in disk space, the second phase checks the integrity of all pages and their structures, and the last phase checks the catalog consistency.

If critical errors are found in any of the phases, the DBCC CHECKDB command terminates immediately. This happens when the SQL Server database is badly corrupted, and is beyond the repairing capabilities of DBCC CHECKDB command. In such cases, if you need to access the database records, then you will need to restore the database records from a valid backup. But, if no backup is available or backup falls short to restore the required amount of data, then you will need to repair the database by using advanced MS SQL Server Recovery application.

Let’s consider a practical scenario, where you receive the below error message when you attempt to access one of your table records-

Table error: Object ID O_ID1, index ID I_ID1 cross-object chain linkage. Page P_ID1 points to P_ID2 in object IDO_ID2, index ID I_ID2.

The above error message primarily results in inaccessibility of all the table records. Additionally, the error message pops up every time you attempt to access the table records.

Cause: Reason of error

The above table error message occurs when the next page pointer of P_ID1 page points to different object. This can happen either due to logical corruption factors or physical crash of a system component.

Resolution: Steps to be used to resolve the above error message

Database table corruption, if caused due to physical damage, can be resolved by changing the damaged system component. For logical table corruption reasons, run DBCC CHECKDB command with appropriate repair clause.

While the physical corruption issues can be resolved easily changing the system component, the probability of logical corruption problems being resolved by DBCC CHECKDB command is slightly less. In such cases, you will need to use advanced Recovery application to repair the database table. A SQL Repair software can be easily downloaded from Internet.

Source: www.programmersheaven.com

http://get-a-designer.com

http://www.all1sourcetech.com

Tags: , , , , , ,
Posted in Purely Technical | No Comments »

NaggieNew Release- MySQL 5.1.44 / 5.5.2 Milestone 2

Wednesday, March 3rd, 2010

MySQL is the World’s Most Popular Open Source Database. It is a widely used and fast SQL database server.

MySQL is a client and server implementation, which consists of a server daemon (mysqld) and many different client programs/libraries. It is a type of SQL database management featured in Thelix hosting plans. A database is an organized collection of information that a computer uses to select and display data.

Databases can help organize and enhance your site content. Sites with dynamic pages and/or shopping cart software often need an underlying database structure.

It is to be pronounced as “my ess cue el” (each letter separately) and not “my SEE kwill.” MySQL is an open source RDBMS that relies on SQL for processing the data in the database. MySQL provides APIs for the languages C, C++, Eiffel, Java, Perl, PHP and Python. In addition, OLE DB and ODBC providers exist for MySQL data connection in the Microsoft environment. A MySQL

NET Native Provider, which allows native MySQL to .NET access without the need for OLE DB, is also available. MySQL is most commonly used for Web applications and for embedded applications and has become a popular alternative to proprietary database systems because of its speed and reliability. MySQL can run on UNIX, Windows and Mac OS.

MySQL is a relational database management system, which means it stores data in separate tables rather than putting all the data in one big area. This adds flexibility, as well as speed.

The SQL part of MySQL stands for “Structured Query Language,” which is the most common language used to access databases. The MySQL database server is the most popular open source database in the world. It is extremely fast and easy to customize, due to its architecture.

Extensive reuse of code within the software, along with a minimalist approach to producing features with lots of functionality, gives MySQL unmatched speed, compactness, stability, and ease of deployment.

Their unique separation of the core server from the storage engine makes it possible to run with very strict control, or with ultra fast disk access, whichever is more appropriate for the situation.

http://get-a-designer.com

http://www.all1sourcetech.com

Tags: , , , , , , ,
Posted in Microsoft Technology, New Product Release | No Comments »