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SQL Server Database: 5 Building and Maintenance Mistakes
Constructing and maintaining a SQL server database environment is like trying to hit a moving target. 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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These are 5 typical mistakes that occur in the creation and maintenance of a SQL server database environment. There are certainly more, but these are a few that you should be aware of.
1. No Plans To Backup
If you aren't backing up your databases often you are leaving yourself open for disaster. Proper backup procedures include a backup plan that 1) makes regular backups, 2) tests your ability to retrieve and restore data from backup systems, and 3) uses alternative locations other than the database server for data storage. Make a point to perform backups early and often. You don’t want to experience a situation where backup data isn’t available.
2. Use of Ad Hoc Queries
Stored procedures on the application level should be the only way a user can access the database. Permissions like INSERT, UPDATE, SELECT, and DELETE are usable when users are writing their on code with an Ad Hoc query. 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. Ideal SQL optimization starts with getting rid of all or most of these ad hoc queries.
3. Not Enough Testing
Putting code into production without testing is nearly as bad having a poor backup plan. It is certainly a mistake not to provide for beta and sustained testing. An optimal pre-production test should be as similar as possible to the production environment. Smaller test databases don’t always scale well to fully functioning production environments. Doing the correct testing now will help prevent fixes needed in the future.
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4. Insufficient Monitoring
You should not assume that your database is already optimized and has no issues with performance. Continuing SQL optimization will require you to constantly perform performance monitoring to be sure that all users are getting a seamless experience. Not performing the proper monitoring opens you up to slowed performance due to applications and queries using up system resources. These SQL server hardware environments and queries need to be monitored an optimized frequently to make sure the system is performing to its optimum potential. SQL monitors will gather trends in performance over a period of time that will enable you to establish plans to tune the database.
5. Insufficient Change Management Processes
Changes to a stable production environment should not be undertaken lightly. It requires the appropriate testing, planning, and implementation processes. Using a change management process will offer better structure when making changes. Documenting how, why and when changes need to be made allows for fast reversions in instances where a change to the database didn't go as planned. Conducting the necessary pre-production testing needs to be a step in your change management procedure. Two words of advice: document everything.