What is buffer cache in SQL Server?
An SQL Server buffer pool, also called an SQL Server buffer cache, is a place in system memory that is used for caching table and index data pages as they are modified or read from disk. The primary purpose of the SQL buffer pool is to reduce database file I/O and improve the response time…
An SQL Server buffer pool, also called an SQL Server buffer cache, is a place in system memory that is used for caching table and index data pages as they are modified or read from disk. The primary purpose of the SQL buffer pool is to reduce database file I/O and improve the response time for data retrieval.Click to see full answer. Then, what is buffer cache hit ratio in SQL Server?Great SQL Server Debates: Buffer Cache Hit Ratio. “Percentage of pages found in the buffer cache without having to read from disk. The ratio is the total number of cache hits divided by the total number of cache lookups over the last few thousand page accesses. After a long period of time, the ratio moves very little.Likewise, are SQL views cached? In SQL Server 2000 and 2005, a view that has a unique clustered index is referred to as an indexed view. In SQL Server at least, Query plans are stored in the plan cache for both views and ordinary SQL queries, based on query/view parameters. Also to know is, what is SQL Server buffer manager? The Buffer Manager object provides counters to monitor how SQL Server uses: Memory to store data pages. Counters to monitor the physical I/O as SQL Server reads and writes database pages. Buffer pool extension to extend the buffer cache by using fast non-volatile storage such as solid-state drives (SSD).What is buffer pool?A buffer pool is an area of main memory that has been allocated by the database manager for the purpose of caching table and index data as it is read from disk. Every Db2® database must have a buffer pool. Each new database has a default buffer pool defined, called IBMDEFAULTBP.
