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SQL Server query optimization and keepup of performance is not a black-art, it can be achieved in a fair manner if you treat your queries with plans with a are reused or recompiled plans that can help you design well-performing applications. There are...
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Every database object will have a sort of dependency between them, such as a stored procedure to run few queries against a table. Similar to this whenever a SP or query is executed then a compiled plan will be generated by the SQL query optimizer, to...
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By default SQL Server has a pool of memory that is used to store both execution plans and data buffers. This pool of memory is managed by default within Analysis Services for SQL Server and such percentage of the pool allocated to either execution plans...
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In general it is not a best practice to perform SHRINK database operation on a production server, atleast regularly! Sometimes it may be compulsory to keep them sized in order to ensure the disk storage is not compromised for any sudden changes to databases...
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Have you ever wondered about flushing databases? Well not quite possible to flush it straight away and not a best practice too on the live server, so what it is about and you need to know about transactions state when they occur. Say when the changes...
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Memory - an important aspect of system performance within a RDBMS platform, not specific to a database product or application. Coming to Microsoft related products such as Windows Server and SQL Server so on, various resources available on web such as...
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Recently I was involved in one of the Performance Audit exercise at a client's place where they complain about Server CPU is always HIGH and what they have observed is even the physical disk where TEMPDB is located has been used extensively, as they...
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Using SP_WHO or SP_WHO2 is a common way to get list of executing processes currently on the server, within SQL Server 2005 you could take advantage of DMV that lists currently-executing statements. select r.session_id ,status ,substring(qt.text,r.statement_start_offset...
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As a programmer interacting with SQL Server's cache is not often needed, but when you do need to determine what is going on with the cache, or you simply need to flush the execution plans or data pages to tune a query, you now have the means to do...
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Though it is not a best practice to perform a CREATE INDEX on large tables during the online hours where you have number of users accessing the metadata of SQL Server database. Within SQL Server 2005 Enterprise Edition you can perform ONLINE indexes operation...
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Parameterizing T-SQL queries are a well-known task such as database programming and best practice in some tasks. It allows query plan reuse and eliminates the need of recompilation for multiple invocations of the same query that simply has different parameter...
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How can you calculate size of an index in a database whenever a capacity planning exercise if performed? By default the size allocated for each user objects depends on the user application and on the amount of space that is created by the application...
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Continuation to the BlogPost on issuing or configuring SQL Servers to use certificates, I have found useful reference on Technet blogs - Mr. Cert’s side of the story ....( read more )
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Dynamic Management Views (DMV) are very useful to get server state information to monitor the status, but not always you have to still continue in monitoring using SYSMON & PROFILER that are available by default with SQL installation. The engine within...
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