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Server $929 Server |
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5 Common Mistakes Made When Creating And Maintaining a SQL Server Database
Building and maintaining a SQL Server database environment is like hitting a moving target. There are numerous parameters involving support, troubleshooting and design that need some consideration. Disregarding certain details or making small mistakes can really make this a difficult job.
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Below is a list of five common mistakes when building and maintaining a SQL Server database environment. There are definitely more mistakes that are made but you should be mindful of these.
1. Insufficient Backup Planning
Failure to regularly backup your databases is an invitation for disaster. Backup planning should involve regular backups, ability to gather and recover backed up data, and use of locations other than database server for storage purposes. Be sure to backup early and often. You will never want to come across a scenario where you don't have the backed up data.
2. Use of Ad Hoc Queries
Users should only be allowed to access the database through stored procedures on the application level. Ad hoc queries enable users to write their own code against the database with SELECT, INSERT, UPDATE, and DELETE permissions. A procedure that is stored will only allow EXECUTE permissions which provides better performance through caching and compiling and also preserves the integrity of the data. Ideal SQL optimization starts with getting rid of all or most of these ad hoc queries.
3. Not Testing Correctly
Similar to having an inferior backup plan, putting untested code into production can open you up to some big problems. Not providing for beta and on-going testing is also a mistake. Optimum pre-production testing must mimic production environments as closely as possible. A small database meant for testing purposes probably won't scale well to a fully functional production environment. Testing now is always better than fixing later.
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4. Insufficient Monitoring
There should not be an expectation that your database will be running smoothly with no performance problems. Continued SQL optimization requires regular performance monitoring to ensure a quality end user experience. Not performing the proper monitoring opens you up to slowed performance due to applications and queries using up system resources. SQL server queries and hardware environments must be monitored and optimized to ensure proper performance. SQL monitors give DBAs a historical view of trend data to help them create a plan to tune the database and improve performance.
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. Having a change management process provides some structure for how changes are made. 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. Thorough pre-production tests must also be a piece in the change management puzzle. Two words of advice: document everything.