Access Denied trying to uninstall assemblies from GAC

On a CRM development server running on Windows Server 2008 R2, I had to uninstall some assemblies in the GAC and I kept getting access denied, when trying to delete them. This was the case both using gacutil.exe and the Windows Explorer when running in Administrative mode.

So, looking for at a way to do this, I had to change a Local Security Policy, in order to allow them to be deleted.

1.  Open Local Security Policy MMC.

2.  Goto Security Settings -> Local Policies -> Security Options

3.  Locate “User Account Control: Run all administrators in Admin Approval” and change the setting from Enabled to Disabled

4.  Reboot and now the assemblies can be deleted

IMPORTANT! Never ever do this on a production system, and always turn it back on afterwards.

SQL Server performance for Dynamics CRM

Data Management Views, stores transnational information which can be used to monitor performance of SQL Server. Below are some queries which gives you data related to indexes used in your CRM database tables and which are the most expensive queries according to that you can troubleshoot the problem related to performance.

• Index Usage

Select OBJECT_NAME(a.object_id),b.name,a.user_seeks,a.user_scans,a.* from sys.dm_db_index_usage_stats a join VirginMedia_MSCRM.sys.indexes b on a.object_id = b.object_id and a.index_id = b.index_id

Where a.database_id = DB_ID('YourOrganizationName_MSCRM')order by b.name

•       Most Expensive Queries

SELECT top 100 SUBSTRING(qt.TEXT, (qs.statement_start_offset/2)+1,((CASE qs.statement_end_offset WHEN -1 THEN DATALENGTH(qt.TEXT) ELSE qs.statement_end_offset END - qs.statement_start_offset)/2)+1),

qs.execution_count,

qs.total_logical_reads, qs.last_logical_reads,

qs.total_logical_writes, qs.last_logical_writes,

qs.total_worker_time,

qs.last_worker_time,

qs.total_elapsed_time/1000000 total_elapsed_time_in_S,

qs.last_elapsed_time/1000000 last_elapsed_time_in_S,

qs.last_execution_time,

qp.query_plan

FROM sys.dm_exec_query_stats qs

CROSS APPLY sys.dm_exec_sql_text(qs.sql_handle) qt

CROSS APPLY sys.dm_exec_query_plan(qs.plan_handle) qp

ORDER BY

qs.total_logical_reads DESC -- logical reads

•              Missing Indexes

SELECT

      migs.avg_total_user_cost * (migs.avg_user_impact / 100.0) * (migs.user_seeks + migs.user_scans) AS improvement_measure,

      'CREATE INDEX [myIndex_' + CONVERT (varchar, mig.index_group_handle) + '_' + CONVERT (varchar, mid.index_handle)

      + '_' + LEFT (PARSENAME(mid.statement, 1), 32) + ']'

      + ' ON ' + mid.statement

      + ' (' + ISNULL (mid.equality_columns,'')

      + CASE WHEN mid.equality_columns IS NOT NULL AND mid.inequality_columns IS NOT NULL THEN ',' ELSE '' END

      + ISNULL (mid.inequality_columns, '')

      + ')'

      + ISNULL (' INCLUDE (' + mid.included_columns + ')', '') AS create_index_statement,

      migs.*, mid.database_id, mid.[object_id]

FROM sys.dm_db_missing_index_groups mig

INNER JOIN sys.dm_db_missing_index_group_stats migs ON migs.group_handle = mig.index_group_handle

INNER JOIN sys.dm_db_missing_index_details mid ON mig.index_handle = mid.index_handle

WHERE migs.avg_total_user_cost * (migs.avg_user_impact / 100.0) * (migs.user_seeks + migs.user_scans) > 10

ORDER BY migs.avg_total_user_cost * migs.avg_user_impact * (migs.user_seeks + migs.user_scans) DESC

Improve MS CRM overall performance

Recently in a customer environment we observed performance issues with CRM application, here are some Checklist everyone should go through to improve overall CRM & server performance.