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Five Common Mistakes That Occur In Building And Maintaining SQL Server Databases
The creation and maintenance of a SQL server database environment is no simple task. Quite a few parameters regarding troubleshooting, support and design must be considered. Making mistakes in these areas or missing important details will makes these tasks much more difficult.
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Here are five frequent mistakes that happen with the construction and maintenance of a SQL server database environment. There are definitely more mistakes that are made but you should be mindful of these.
1. No Plans To Backup
If you aren't backing up your databases often you are leaving yourself open for disaster. An acceptable backup plan should make backups regularly, be able to find and restore data from backup storage, and also have storage locations other than the database server. Make a point to perform backups early and often. You will never want to come across a scenario where you don't have the backed up data.
2. Utilization of Ad Hoc Queries
Stored procedures on the application level should be the only way a user can access the database. An Ad Hoc query enables users to write their very own code against the database with various different permissions. EXECUTE is the only permission allowed through stored procedures which, in turn, will lead the preservation of the data and also enhanced performance through caching and compiling. The right way to optimize and SQL server is to eliminate a majority or all ad hoc queries.
3. Improper Testing
Just like having a bad backup plan, if you put code in production before it is tested you are putting yourself in a bad spot. Another big mistake is to not allow for the proper beta testing and on-going testing Optimum pre-production testing must mimic production environments as closely as possible. Smaller test databases don’t always scale well to fully functioning production environments. Testing now is always better than fixing later.
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4. Lack of Monitoring
You should not assume that your database is already optimized and has no issues with performance. Quality SQL optimization will need constant performance monitoring so that users are always getting the best possible experience at any given time. Improper monitoring will pose a risk of hindering performance due to queries and applications tying up too many system resources. SQL server hardware environments and queries need to have constant monitoring and optimization to make certain that performance is as good as it can get. An SQL monitor will enable you to capture performance trends over time so that you can create tuning plans to improve performance.
5. Insufficient Change Management Processes
Changing a stable production environment should not be done light-heartedly. They require proper planning, testing, and implementation procedures. Using a change management process will offer better structure when making changes. If database changes don't go according to plan, having the right documentation of how, why and when changes should be made will provide for quick reversions. Diligent pre-production testing should also be a part of your change management process. One simple hint: document everything.