Query to find all the Tables and Index with number of days statistics being old. Then run Update Statistics command to update statictics for optimized query plan.

SELECT
 OBJECT_NAME(A.object_id) AS Object_Name,
 A.name AS index_name,
 STATS_DATE(A.OBJECT_ID, index_id) AS StatsUpdated ,
 DATEDIFF(d,STATS_DATE(A.OBJECT_ID, index_id),
 getdate()) DaysOld
FROM sys.indexes A
 INNER JOIN sys.tables B ON A.object_id = B.object_id
WHERE A.name IS NOT NULL
ORDER BY DATEDIFF(d,STATS_DATE(A.OBJECT_ID, index_id),getdate()) DESC

Accessing JD Edwards Data on iSeries or AS/400 from a ASP.NET

Facing problem, while retrieving field data from JD Edwards to SQL (SSRS Reporting), giving Error or Special unicode characters,
because, the returning data was a stream that needs to be converted into ASCII (ebcdic37String) using Cp037 Encoding.

public static String convertEBCDIC37ToUnicode(String ebcdic37String)
{
 String encoding = "Cp037";
 byte[] ebcdic;
 String converted = null;
 try
 {
  ebcdic = ebcdic37String.getBytes();
  converted = new String( ebcdic, encoding );
 }
 catch (Exception e)
 {
  //Handle it
 }
 return converted;
}

Yesterday, after restoring CRM DB backup on other maching and importing Organization using Deployment Manager of CRM 4.0, I received this error.

The SELECT permission was denied on the object 'BuildVersion', database 'MicrosoftCRM_MSCRM', schema 'dbo'
or the variation
The SELECT permission was denied on the object 'SystemUser', database 'MicrosoftCRM_MSCRM', schema 'dbo'

If you have tried changing the owner of new database with admin login making it as dbowner but did not help then following may help solving this problem

Right click the affected object (table/view etc) in my case it was 'BuildVersion' and 'SystemUser' in SQL Server Management Studio,
click on properties
click on "Permissions" on left tab
click on "View schema permission" link on right tab
click on "Add" button,
click on "Browse" 
select "CRMReaderRole" of type Database role.
click ok,
click ok,
now you will be again in object properties.
Place check mark in "Grant" column against "Select" permission
click ok

Now check hope so it has been resolved.

================

To change the dbowner command is (If required)

use <CRMDatabaseThatYouNeedToChangeTheOwner>
exec sp_changedbowner 'DOMAIN\AdministratorMappedWithCrmAdmin'
go


===============

I was getting this error
No authority could be contacted for authentication
   at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall)
   at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters)
   at Microsoft.Crm.ReportingServices2005.ReportingService2005.CreateReport(String Report, String Parent, Boolean Overwrite, Byte[] Definition, Property[] Properties)
   at Microsoft.Crm.Reporting.ReportServer.UploadReport(String path, Byte[] reportDefinition, String name, String description)

along with this error
Stack Trace Info: [MissingParameterException: The 'CRM_CalendarType' parameter is missing a value]
   at Microsoft.Reporting.WebForms.ParametersArea.ValidateAllReportInputsSatisfied()
   at Microsoft.Reporting.WebForms.ReportViewer.OnPreRender(EventArgs e)

This error may have many resons. The resoultion which help me in solving this problem was to first unjoin then again join report server machine to/from domain. 

If above did not help in solving then do the following which is "totally not recommended" and "should not do" in production server
Allow annonymous access and select priviliged user / administrator in ReportServer's virtual directory -> properties -> Directory Security

If you get following exception while uploading / creating new report using Source Report Type -> Exising file

==============
[CrmException: Exception of type Microsoft.Crm.CrmException was thrown.]
  Microsoft.Crm.Application.Platform.Report.InternalCreate(String xml) +721
  Microsoft.Crm.Application.Platform.Entity.Create() +109
  Microsoft.Crm.Application.Forms.AppForm.RaiseDataEvent(FormEventId eventId) +408
  Microsoft.Crm.Application.Forms.EndUserForm.Initialize(Entity entity) +57
  Microsoft.Crm.Application.Forms.EndUserForm.Execute(Entity entity) +13
  Microsoft.Crm.Web.Tools.ReportProperty.ReportPropertyPage.ConfigureForm() +202
  Microsoft.Crm.Application.Controls.AppPage.OnPreRender(EventArgs e) +30
==============

The issue lay with our RS permissions.
In addition to failing to upload reports, we tried downloading them from CRM too. This gave us an NT permissions error.
So, we opened up (localhost)/reports, navigated to the CRM datasource (typcially 'Organization_MSCRM), then properties, then security,
and then added a user / group called NT AUTHORITY\NETWORK SERVICE,
and gave them the permissions of CRM Publisher.
After that it all worked fine.

Thanks to Lee/Ronald

If you get following exception while uploading / creating new report using Source Report Type -> Exising file

=============
Stack Trace Info: [NullReferenceException: Object reference not set to an instance of an object.]
   at Microsoft.Crm.Reporting.SRSReport.convertDataSource()
   at Microsoft.Crm.Reporting.SRSReport..ctor(String xmlContent, String originalFilter, Boolean convertReportToCrm, ExecutionContext context)
   at Microsoft.Crm.ObjectModel.ReportService.CreateInternal(IBusinessEntity entity, Boolean isScheduledReport, ExecutionContext context)
   at Microsoft.Crm.ObjectModel.ReportService.Create(IBusinessEntity entity, ExecutionContext context)
=============

The reason can be the Shared Datasource used while creating Report in Visual Studio 2005.

1. Create a new Report Project in Visual Studio 2005

2. Right click on Reports, choose to add Existing Item

3. Double Click on the report to open it.

4. Click on the Data (top tab) above the open report file.

5. Click the "..." button just to the right of Dataset to open Dataset Properties.

6. Click on the "..." button to the right of the Data Source drop down list.

7. Clear the "Use shared data source reference" option.

8. Click on the "Edit..." button to the right of Connection string.

9. Enter the correct SRS Server Name, enter the authentication method, and choose the correct database name.

10. Click OK, this will change the source for the entire report.

11. Click OK to the Visual Studio window again.

12. Choose, File, Save <Report>.

13. Try to upload it again. This time it should load.

 Thanks to mennotk

Today I tried to find out which table is taking much space in DB or to find the numbers of columns and rows in all tables of DB

Following query will return the required result

=========

USE DatabaseName
GO
CREATE TABLE #temp (
                table_name sysname ,
                row_count INT,
                reserved_size VARCHAR(50),
                data_size VARCHAR(50),
                index_size VARCHAR(50),
                unused_size VARCHAR(50))
    SET NOCOUNT ON
INSERT     #temp
    EXEC       sp_msforeachtable 'sp_spaceused "?"'
SELECT     a.table_name,
            a.row_count,
            COUNT(*) AS col_count,
            a.data_size
    FROM       #temp a
            INNER JOIN information_schema.columns b
            ON a.table_name collate database_default
    = b.table_name collate database_default
    GROUP BY   a.table_name, a.row_count, a.data_size
    ORDER BY   CAST(REPLACE(a.data_size, 'KB', '') AS integer) DESC
DROP TABLE #temp