SQL 2005: Use DMV and CROSS APPLY to Get Details of SQL's Cached Query Plans

SQL 2005's Dynamic management views and functions return server state information that can be used to monitor the health of a server instance, diagnose problems, and tune performance. For example, following query fetches SQL server's cached query plans. You can use the refCounts and useCounts for performance analysis.


       SELECT  cached.*,
               sqltext.*
         FROM  sys.dm_exec_cached_plans cached
  CROSS APPLY  sys.dm_exec_sql_text (cached.plan_handle) AS sqltext

Note: CROSS APPLY, a new feature of SQL Server 2005, is quite simple: an INNER (or outer) JOIN between a table and a table-valued function.

sys.dm_exec_sql_text: Returns the text of the SQL batch that is identified by the specified sql_handle. This table-valued function replaces the system function fn_get_sql.

sys.dm_exec_cached_plans: Returns a row for each query plan that is cached by SQL Server for faster query execution. You can use this dynamic management view to find cached query plans, cached query text, the amount of memory taken by cached plans, and the reuse count of the cached plans.

See also

  • SQL: Use Dynamic SQL Query Correctly
  • SQL 2005: Use DMV and CROSS APPLY to Get Cached Plans
  • SQL 2005: Discontinued or Deprecated Features in SQL Server 2005
  • SQL 2005: Default Trace Enabled Option
  • SQL 2005: Column Level Permissions
  • SQL 2005: SQLCMD Supports Parameterized Variables and Macro Features
  • SQL 2005: DTS Has Become SSIS now
  • SQL 2005: Microsoft SQL Server 2005 JDBC Driver
  • SQL 2005: Query Notifications in ADO.Net 2.0
  • SQL 2005: Overcome SQL Index Size Limit
  • SQL 2005: DDL Triggers
  • SQL 2005: Why Should Use 64 Bit Now
  • SQL 2005: How to Rebuild The Master Database
  • SQL 2005: A Little Trick to Install SQL 2005 Onto Your Dirty DEV Machine
  • SQL 2005: New Resource Database
  • SQL 2005: Alter Index Rebuild
  • SQL 2005: XQuery Sample
  • SQL 2005: How to Move Database
  • SQL: Use COALESCE to Generate a List
  • SQL: How to Debug SQL Deadlocks
  • .Net: How to Bypass Strong Name Check
  • Agile: Lean Software Development - An Agile Toolkit
  • ORM: How to Use nHibernate 1.2 to Call Stored Procedure to Return a Dataset Without a Mapping Entity
  • AJAX: ASP.NET AJAX Tips
  • .Net: Debugging Commands
  • .Net: How to Run NUnit And Debug Your Test Fixtures Directly from VS 2005
  • .Net: How to Add Domain User to Local Group
  • .Net: Lock Value Type?
  • .Net: How to Create an Instance of a Generic Type with Parameters
  • .Net: How to Get Address of a Managed Type
  • ORM: New Features of nHibernate 1.2
  • .Net: How to Get System Error Message from HRESULT in Managed Code
  • .Net: Use Windows PowerShell Now
  • WMI: Use WMI to Run Commands on Remote Machine
  • API: GetLogicalProcessorInformation to Detect CPUs
  • .Net: How to Implement Singleton Correctly
  • .Net: There is no MTS object context (Exception from HRESULT: 0x8004E004)
  • .Net: The Net Objectives Pattern Repository
  • Web: Access Denied When ASP.Net Accesses Eventlog
  • Nant: Error Loading GUID of Project
  • AJAX: Ajax in Action
  • DTC: DtcGetTransactionManager Fails
  • .Net: Run .Net 1.1 COM+ Serviced Components Under .Net 2.0 Framework
  • .Net: Debugging Managed Code Tip
  • .Net: Assembly Binding Log Viewer (Fuslogvw.exe)
  • .Net: .Net Framework Design Guidelines
  • .Net: Use Global Catalog and CheckTokenMembership to Check AD Group Membership



    • THIS POST IS PROVIDED "AS-IS" WITH NO WARRANTIES AND CONFERS NO RIGHTS. Build time: Sun 03/30/2008 . ©2007 Dalun Software. All rights reserved. Back to Article List