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Don’t try to save a few bucks by putting your IIS server on the same server as SQL Server. Ans: Either the user must be mapped to sysadmin, db_owner, db_creator or he/she will be granted the permission “Show Plan”. What are the tools available for performance tuning/monitoring? How to identify the CPU bottlenecks and how to resolve it?

Ans: Identifying CPU Bottlenecks: Firstly we have to confirm that SQL Server – CPU utilization is high.

A transaction log write can be as fast as 1ms (or less) for high performance SAN environments.

For many applications, a periodic spike in average disk seconds per write is acceptable considering the high cost of sophisticated SAN subsystems.

Sustained high values for disk seconds/read ( (See Perfmon Logical or Physical disk.

Network_io: There is too much of traffic in Network Cxpacket: Your process is waiting on other parallel processes to complete. We may not have enough CPU in your box IO_Completion: Disk issue. Ans: Instead of measuring activity of CPU, storage, or memory, why not ask what SQL Server has been waiting on when executing queries?Ans: The job of the lazy writer is to find dirty pages in the buffer pool and write them out to disk and drop those pages from cache. Can we find performance bottleneck from sysprocesses? We may not confirm that it is the only bottleneck but at least we can find the bottleneck.Lastwaittype column with waittime plays a vital role in identifying the issue. Any index that has been used (by select, update or delete operations) will appear in sys.dm_db_index_usage_stats.Thus, any defined index not included in this DMV has not been used since the last re-start of SQL Server (A query plan is used to execute a query.

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