The SQL Server application is designed to tackle huge workloads and its uses several relevant techniques to deliver outstanding performance. The SQL Server Buffer cache is an area in the computer memory which is used to cache appropriate index and table data for quick access. For the uninitiated, caching essentially aims to keep frequently accessed data handy with an eye on reducing read times, especially from a secondary storage device. Let’s look at the key reasons and benefits behind the presence of a buffer cache in SQL Server.
Drastically brings down data retrieval time
The primary rationale behind using SQL Server Buffer cache is that it reduces retrieval time needed for accessing a data element from a file and seemingly brings down I/O levels. In fact it becomes rather useful when similar queries are processed with frequency and in applications where a particular data set is repeatedly accessed.
You can increase the size of the SQL Cache
The MS SQL Server application offers you the cache to increase the size of your cache and even extend it to solid state drive if needed. This solution is typically tried out in enterprise implementations where the volume of data stored in system is huge and so is the frequency of access. A proper implementation of cache can make a significant difference in the response time of the system.
Keep an Eye on the Hit Ratio
To better optimize the performance of your SQL Server application you should keep an eye on the Buffer cache hit ratio. It essentially calculates the ratio of date pages which were able to be grabbed from the cache in respect to the overall data page read attempts.
The higher the hit ratio, the more efficient would be the response from the SQL Server. Some experts believe a hit ratio of around ninety should be ideally achieved.
A Recovery Plan for MS SQL Server Should Factor in a complete Data Recovery Scenario
In most organizations today there is a huge stress on creating a business recovery plan which lays emphasis on IT systems including databases. Now if you are running a MS SQL Server application then you should consider myriad scenarios for your disaster recovery plan to tackle. One extreme scenario that you should consider involves a complete data recovery from a crashed SQL file using a specialized sql recovery tool like the refined DataNumen SQL Recovery application. Primed to handle nearly every possible variety of SQL corruption, the tool can bring back your lost database records along with any queries, functions, triggers etc that you may have created, in a short span of time. Moreover it also makes sense to use this tool for dealing with files which have been compromised by a checksum error. In cases of a human error where any database user mistakenly ends up deleting a data set, the tool can be used to get it back without breaking a sweat.
Alan Chen is President & Chairman of DataNumen, Inc., which is the world leader in data recovery technologies, including access recovery and sql recovery software products. For more information visit https://www.datanumen.com/