https://support.microsoft.com/en-us/kb/2664150

How to control PrincipalObjectAccess table growth in Microsoft Dynamics CRM 2011

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SYMPTOMS

After you use Microsoft Dynamics CRM 2011, you may notice that the size of the SQL table PrincipalObjectAccess grows and could be using a large percentage of the database size.

CAUSE

When records are deleted in Microsoft Dynamics CRM, the related PrincipalObjectAccess records are not removed.

RESOLUTION

Apply Update Rollup 6, and then execute the script that is documented here. This script must be executed only one time after you apply Update Rollup 6. Update Rollup 6 and future Update Rollups will fix this known issue.

SQL Script To Execute
--Replace the text "Replace With DatabaseName" with your database name

--For Example

--USE [AdventureWorksCycle_MSCRM]
USE [<Replace With DatabaseName>]
GO

BEGIN TRY
BEGIN TRAN t1 

IF NOT EXISTS (SELECT * FROM sys.sysobjects

WHERE id = object_id(N‘[dbo].[ToDeletePOAEntries]‘)

AND ObjectProperty(id, N‘IsUserTable‘) = 1)

create table ToDeletePoaEntries
(
ObjectId uniqueidentifier,
Otc int
)

IF NOT EXISTS (SELECT * FROM sys.sysindexes si

INNER JOIN sys.sysobjects so ON si.id = so.id

WHERE so.id = OBJECT_ID(N‘[dbo].[ToDeletePoaEntries]‘)

AND OBJECTPROPERTY(so.id, N‘IsUserTable‘) = 1

AND si.name LIKE ‘%mainindex%‘)

CREATE UNIQUE NONCLUSTERED INDEX [mainindex] ON [dbo].[ToDeletePoaEntries]
(
[ObjectId] ASC,
[Otc] ASC
)WITH (STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]

----- Insert records to be deleted in ToDeletePoaEntries

-- go through all user-owned entities which are not replicated and don‘t support duplicate detection
declare entity_cursor cursor local FORWARD_ONLY READ_ONLY
for select distinct e.ObjectTypeCode, e.BaseTableName, a.PhysicalName from EntityView e
inner join AttributeView a on e.EntityId = a.EntityId and a.IsPKAttribute = 1
where e.IsReplicated = 0 and e.IsDuplicateCheckSupported = 0 and e.OwnershipTypeMask & 1 = 1

open entity_cursor

declare @baseTableName sysname
declare @otc nvarchar(20)
declare @primaryKey sysname
declare @totalCollected int = 0
declare @currentCollected int

declare @tempRowCount int = 0
declare @collectstatement nvarchar(max)

fetch next from entity_cursor
into @otc, @baseTableName, @primaryKey

while @@FETCH_STATUS = 0
begin
print ‘Cleaning up POA for ‘ + @baseTableName

set @currentCollected = 0

set @collectstatement = ‘insert into ToDeletePoaEntries(ObjectId, Otc)
select distinct poa.ObjectId, poa.ObjectTypeCode
from PrincipalObjectAccess poa
left join ‘ + @baseTableName + ‘ e on poa.ObjectId = e.‘ + @primaryKey +
‘ where e.‘ + @primaryKey + ‘ is null and poa.ObjectTypeCode = ‘ + @otc;

print @collectstatement

exec(@collectstatement)
set @tempRowCount = @@ROWCOUNT
set @currentCollected = @currentCollected + @tempRowCount
print CAST(@currentCollected as nvarchar(20)) + ‘ records collected for ‘ + @baseTableName
set @totalCollected = @totalCollected + @currentCollected

fetch next from entity_cursor
into @otc, @baseTableName, @primaryKey
end

close entity_cursor
deallocate entity_cursor

print CAST(@totalCollected as nvarchar(20)) + ‘ total records collected‘

-- Delete query

-- This scripts cleans up orphaned POA records for selected entities

declare @deleteBatchSize int = 50000
declare @deleteBatchSizeNVarChar nvarchar(10) = CAST(@deleteBatchSize as nvarchar(10))
declare @totalDeleted int = 0
declare @currentDeleted int
declare @deletestatement nvarchar(max)

set @currentDeleted = 0
set @tempRowCount = 0

-- delete all records of the current entity type which don‘t have corresponding object in the base table
set @deletestatement = ‘delete top (‘ + @deleteBatchSizeNVarChar + ‘) from PrincipalObjectAccess
from PrincipalObjectAccess poa
join ToDeletePoaEntries e on poa.ObjectId = e.ObjectId and poa.ObjectTypeCode = e.Otc‘

print @deletestatement

-- delete PrincipalObjectAccess records in batches
exec(@deletestatement)
set @tempRowCount = @@ROWCOUNT
set @currentDeleted = @currentDeleted + @tempRowCount

while @tempRowCount = @deleteBatchSize
begin
exec(@deletestatement)
set @tempRowCount = @@ROWCOUNT
set @currentDeleted = @currentDeleted + @tempRowCount

print CAST(@currentDeleted as nvarchar(20)) + ‘ records deleted ‘ + cast(getUtcdate() as nvarchar(50))
--cleanup

end

COMMIT TRAN t1

-- Cleanup

DROP Table [dbo].[ToDeletePoaEntries]
PRINT ‘EXECUTION SUCCEED‘
END TRY
BEGIN CATCH
ROLLBACK TRAN t1

-- Cleanup

DROP Table [dbo].[ToDeletePoaEntries]

PRINT ‘EXECUTION FAILED :‘ + ERROR_MESSAGE()
END CATCH

MORE INFORMATION

This script only needs to be run one time after Update Rollup 6 or a future Update Rollup is installed. After the script is run to clean up the PrincipalObjectAccess table, the script does not need to be run after any future Update Rollup installations.

Properties

Article ID: 2664150 - Last Review: 06/27/2012 12:54:00 - Revision: 6.0

Applies to

Microsoft Dynamics CRM 2011

Keywords:

• kbmbsmigrate kbsurveynew KB2664150