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SQL Server has a wealth of Dynamic Management Views (DMVs) to get you health status of the platform. All the data will be extracted with a query, set of transactions and many more ways, in this case you had to be careful with transactions, because whenever...
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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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One of the primary design goals of all database software is to minimize disk I/O because disk reads and writes are among the most resource-intensive operations. SQL Server builds a buffer pool in memory to hold pages read from the database. Much of the...
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On the subject line the process to find the answer is not a short one! By design SQL Server engine takes care when the query optimizer generates a query plan, it analyzes what are the best indexes for a particular filter condition. If the best indexes...
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The subject line of this post is a common factor that every DBA might have (once in lifetime). Performance Monitoring is a big subject when it comes to practice, many factors include such as what to monitor, how often, and 'basic' rules of thumb...
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Here is the quirky error that has caused a resources crunch on a SQL instance, Error : Process ID -2 is not a valid process ID . The actual issue occurred during an update to a table that has been used by Online application to update the action log, intially...
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Recently there hasn't been much of SQL Server tasks for me, as most of the time I was involved on designing the solutions for larger installations - a 8 node cluster or VLDB configuration etc. Ok I admit that still it can be classified as SQL Server...
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How many times in a day you observe the TEMPDB in your SQL Server enviornment? How many times in a week you monitor the TEMPDB in your SQL Server environment? Well, these are not an interview questions to ask and as you aware that because TEMPDB is so...
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PERFMON and Resource Governor - two great tools in hand for a DBA to monitor/resolve the performance problems, agreee! Back in olden days you may remember about SQLDiag and PSSDiag, the utility used as a general purpose diagnostics collection utility...
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As a SQL Server user or DBAs using SP_WHO or undocumented stored procedure SP_WHO2 is a common occurrence. For this there are times when you will need to run sp_who on your SQL Server to figure out who is on and what are they doing. The output is quite...
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DMVs are most helpful to find instant information on SQL instance without causing further delays, in any performance degradation time you can execute following TSQL to get top 10 queries that are generating lots of I/O on the server: SELECT TOP 10 total_logical_reads...
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As a DBA, you probably often find yourself striving or struggling to improve the performance of SQL Server instance queries (might be smaller or complex ones). By default in order to get further analysis on the system's performance you need to perform...
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Initially I preferred to put this blog post within Performance tuning blog section here, but as it relates to the TSQL script thought this is best place to go. Anyways, if you have a performance problem the foremost option is to find whether the server...
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Whenever a performance issue occurs on the SQL Server database best option for diagnosing and troubleshooting common problems by using publicly available tools such as Profiler, System Monitor (Perfmon), and Dynamic Management Views (DMVs) in SQL Server...
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SQL Server 2005 has introduce a secret-door for Admins to identify and resolve any connect lockout issues within your database instance, as on http://sqlserver-qa.net/blogs/tools/archive/2007/08/04/dedicated-administrator-console-dac-saved-an-important...
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