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  • Performance Tuning with SQL Server Dynamic Management Views

    From Red-Gate website you can download (for free) the ebook Performance Tuning with SQL Server Dynamic Management Views written by Louis Davidson (@drsql) and Tim Ford (@sqlagentman). DMVs are objects that publish information about the health state of a SQL Server instance. They allow you to monitor the heart of the system to diagnose ...
    Posted to Sergio Govoni (Weblog) by Sergio Govoni on March 14, 2014
  • SSAS DMVs: useful links

    From time to time happens that I need to extract metadata informations from Analysis Services DMVS in order to quickly get an overview of the entire situation and/or drill down to detail level. As a memo I post the link I use most when need to get documentation on SSAS Objects Data DMVs: SSAS: Using DMV Queries to get Cube Metadata ...
    Posted to Davide Mauri (Weblog) by manowar on May 18, 2012
  • SYS2 scripts updated (December 2012)

    I’ve updated my SYS2 scripts: Added a new script to see how much buffer cache memory is used by each database Updated the sys2.stats script in order to have only one row per statistics Updated the sys2.query_stats script to use the sys.dm_exec_plan_attributes dmv to get better information on which database was used by the cached plans ...
    Posted to Davide Mauri (Weblog) by manowar on December 12, 2011
  • More on DMV changes in SQL 2008 R2 SP1

    Following our last post by Mehmet about new support and troubleshooting DMV’s, here are additional details on supportability DMV changes in SQL 2008 R2 SP1 and how you might use them. These changes are also available in “Denali”, the upcoming major release of SQL Server. With SQL 2008 R2 SP1 coming up soon, please give them a try ...
    Posted to SQLOS Team (Weblog) by SQLOS Team on May 11, 2011
  • SYS2 Scripts Updated – Scripts to monitor database backup, database space usage and memory grants now available

    I’ve just released three new scripts of my “sys2” script collection that can be found on CodePlex: Project Page: http://sys2dmvs.codeplex.com/ Source Code Download: http://sys2dmvs.codeplex.com/SourceControl/changeset/view/57732 The three new scripts are the following sys2.database_backup_info.sql sys2.query_memory_grants.sql ...
    Posted to Davide Mauri (Weblog) by manowar on February 13, 2011
  • Viewing how much memory is used by not reused query plan

    One interesting observation that may help developers get convinced that they should parametrize query and that they must check that the ORM they use does it correctly is show how much memory can be wasted by plans that cannot be effectively reused. The following query can help on this: with cte as (     select ...
    Posted to Davide Mauri (Weblog) by manowar on July 23, 2010
  • Automating SQL Execution Plan analysis

    Last year, I made my tool for automating execution plan analysis available on www.qdpma.com The original version could parse execution plans from sys.dm_exec_query_stats or dm_exec_cached_plans and generate a cross-reference of which execution plans employed each index. The DMV sys.dm_db_index_usage_stats shows how often each index is ...
    Posted to Joe Chang (Weblog) by jchang on March 22, 2010
  • SYS2 DMVs on CodePlex

    I’ve just created a new project on CodePlex anmed SYS2DMVS, where I’ll put all my sys2 scripts so that they can be found and accessed more easily. Also it will more easy for me to maintain them, just a Check-In with SVN and that’s it :-). http://sys2dmvs.codeplex.com/ The scripts are growing in number, they are now 9, so I though that they ...
    Posted to Davide Mauri (Weblog) by manowar on January 18, 2010
  • sys2 scripts updated

    I’ve updated my “sys2” scripts with three 3 new scripts: sys2.objects_dependencies A wrapper around sys.sql_expression_dependencies that shows also related informations taken from sys.object table, like object name, object type and schema name of the referencing entity. sys2.objects_partition_ranges Shows information on partitioned ...
    Posted to Davide Mauri (Weblog) by manowar on January 7, 2010
  • Automating dm_exec_query_stats and dm_db_index_usage_stats analysis

    Everyone should know by now how really useful the DMVs dm_exec_query_stats, and dm_db_index_usage_stats and the associated DMFs for obtaining the SQL and XML plan: dm_exec_sql_text, dm_exec_query_plan, and dm_exec_text_query_plan. Of course it has been explained that dm_exec_query_stats is not a replacement for SQL Server Profiler and SQL Trace. ...
    Posted to Joe Chang (Weblog) by jchang on June 22, 2009
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