This post discusses the facts around SQL Server database corruption and solution for it. It further discusses the importance of creating backups and measures to take in case data goes corrupt.
Can We Prevent SQL Server Database Corruption?
How to prevent SQL server database from going corrupt? Lots of people, particularly DBAs (Data Base Administrators) have this question on their mind. The most honest and simplest answer to this question is – you cannot. It may sound disappointing, but it’s the truth. SQL database corruption is a very random problem.
The fact that it occurs at the level of disk subsystem makes it very hard to recognize and prevent it. This is the reason why all the major Operating Systems come with the option similar to CHKDSK. Therefore, it’s imperative for DBAs to have access to quality SQL server recovery software to use in case of emergencies.
Though SQL Server database corruption is unavoidable, we still have many solutions for it. Below are 3 most important ones.
Solution 1: Staying on the Lookout for System Errors
Disk/storage errors are extremely rare. So, the question is not if those errors will happen. The bigger question is when they will happen. It’s because magnetic storage is highly complex and subjected to lot of factors that can cause the data go corrupt.
We already established that corruption is a very rare problem. However, it is wise to keep observing if the system has started experiencing issues on a frequent basis. If you happen to notice such things, it’s a sign that there might be some problem with hardware, or its drivers, or something else.
The thing is that recognizing the reason behind these issues and fixing them is insanely tough. So, if an admin begins to notice an increase in the frequency of corruption, then he/she should start considering buying new hardware or migrating all the critical systems.
Even though there are no surefire ways of preventing corruption, it does not imply that the person is absolutely helpless. SQL servers are capable of anticipating that disk subsystem might run into problems. In addition to that, there are several functionalities and tools that one can use to mitigate the damage caused by corruption.
If you take advantage of these features, users can become protected against the damage caused by SQL database corruption. In conclusion, it’s safe to say that being proactive in terms of recognizing what the system is trying to tell you can offer you some protection against corruption. But, even then it’s not the most solid way of ensuring prevention against data corruption.
Solution 2: Regular Backups
Corruption that happens in boot page is incurable. So, if you happen to face similar problem then your only hope is resorting to backups. Backups are really the only key in which you can respond to data corruption in the healthiest way. Therefore, the most intelligent approach for ensuring safety against data loss is to have regular and tested backups on your hands. Backups provide you a safety net to fall back on in case things go awry.
Solution 3: SQL recovery software
If you do some research, you will find out that there are number of incredibly helpful recovery software available online. Depending upon the specification of your SQL server you can pick one that offers restoration and repair services for your system.
Quality software will not only be able to repair the damaged file, but also recover the entire database from scratch. So, data base administrators must get their hands on good software. The practice will prove helpful in case of sudden data loss.
Peter Song is a data recovery expert in DataNumen, Inc., which is the world leader in data recovery technologies, including outlook recovery and PDF recovery software products. For more information, visit www.datanumen.com.