Sunday, April 11, 2010

Damaged Transaction Log Files May Cause SQL Server Database Corruption

In Microsoft SQL Server 2005 and Microsoft SQL Server 2000, every database includes at least one transaction log file and data file. MS SQL Server stores data physically in data file and details of the modifications that are performed on SQL Server database are stored in transaction log file. Logging the transaction details can't be turned off because transaction integrity is conceived an intrinsic and fundamental characteristic of MS SQL Server. In case of corruption or loss of transaction log file, you may come across SQL Server Database corruption. In such cases, you are required to perform SQL Database Recovery to retrieve data.

To prevent database corruption, one must prevent unexpected growth of transaction log files. To do so, follow the underwritten steps:

Set size of transaction log files to a large value for avoiding automatic expansion of transaction log files.
Configure automatic expansion of the transaction log files using memory units instead of percentage after evaluating optimum memory size.
Change recovery model. In case of data corruption or some disaster, you need to recover damaged database so you can maintain transaction integrity and data consistency of MS SQL Server database. Depending upon the significance of damaged database, you can go for any of the following database recovery models for determining how the data and information is backed up and what exposure you have to data loss:

Simple recovery model - To recover corrupt SQL Server database to most recent backup.
Full recovery model - Enables you to recover damaged database to a point when database failure occurred. It restores database using transaction log files.
Bulk-logged recovery model - It works in the same way as the Full recovery model does.

Backup transaction files regularly.
Do not continue running the uncommitted transactions.
Defragment indexes.

In case the above methods can not help you, and transaction log file gets damaged, you may face severe database corruption. In such situations, MS SQL Recovery is the only way to repair and restore damaged database.

The MS SQL Recovery applications use advanced database scanning techniques to thoroughly scan the damaged database and extract all data from it. They Recover SQL database in a safe and easy way with their read-only conduct and interactive graphical user interface.

SQL Recovery software safely repair and restores damaged SQL Server database in all cases of corruption. The software works well with MS SQL Server 2008, 2005, and 2000. It restores all damaged and inaccessible database objects, such as tables, reports, forms, macros, triggers, and stored procedures.

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