Sql Index Page Locking
Jan 22, 2008
Hi
I have a table called "Jobs" on my SQL server. I have an access front end which connects to this as well as some access backend tables.
We have 30+ users on the system. There are 1000s of records in this "jobs" table.
For some reason, at certain points of the day all users are stopped from updating a group of records. No-one can update values in a clump of records. It is usually 10-20 records that are numerically together.
When i kick everyone off the system, and log back those particular records seem to be unlocked.
I can rule out permissions on the Jobs table. i am failry certain they have been set correctly.
To me it sounds like Page locking. Now i am new to SQL server. I am inheriting a recently created sql system.
But i notice there are multiple indexes formed on this JOBS table. I looked at one in particular. It is a "ClientName" field.. I noticed under this index > options...it says "Use Page locks when accessing the index".
Am i interpreting this right... But anyone searching under this field, will page lock on that table.
And...if my memory serves me right, "page locking" locks a group of all the nearest records?
Is this correct?
Does this sound like where my system is going wrong?
Thanks
Conor
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Jul 20, 2005
Hello all,Somewhere on these newsgroups I recall reading that SQL Server 6 and prior(when they were married with Sybase) used page locking and not row levellocking. Hence you could be locking a lot more records then what you thinkwhen doing an UPDATE or INSERT SQL.Now I notice that SQL Server 7 and 2000 claim to use row level locking. (Asyou can see, I have been out of the SQL arena for some time). So what I'dlike to know if this is all true? Or marketing mumbo-jumbo? Has Microsoftmade changes at the core of their engine to lock rows? I know that otherRDMSs like Interbase have a versioning engine so it was built from theground up for concurrence. And I've read that MSs row level locking is aband-aid on its unchanged core engine, although the author of that messagedid not expand further on this.so I figured I'd ask the experts what the truth is. Any help is muchappreciated.If indeed it has changed, what sort of test can I run to prove this to my boss?regards,-randall sell
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May 9, 2008
I am running one maintenance plan which includes just "Chech DB Integrity" and "Reorganised Index". But it failed and I am getting following error:-
 Â
Failed-1073548784) Executing the query "ALTER INDEX [CgiExclusion_ProfileId] ON [dbo].[CgiExclusion] REORGANIZE WITH ( LOB_COMPACTION = ON )" failed with the following error: "The index "CgiExclusion_ProfileId" (partition 1) on table "CgiExclusion" cannot be reorganized because page level locking is disabled.". Possible failure reasons: Problems with the query, "ResultSet" property not set correctly, parameters not set correctly, or connection not established correctly.
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Apr 17, 2005
I know the shortcut to 'defragging' the database to eliminate and
reclaim 'whitespace' in data and index pages is to setup a maintenance
plan. This doesn't work for me for two reasons:
1. I like to know how things work.
2. I can not create maintenance plans with my hosted provider.
I use the following T-SQL to rebuild all indexes on all tables:
-- exec sp_MSforeachtable "DBCC DBREINDEX ('?', ' ', 90)
But, does that not only address indexes? What about getting whitepace
back from data in tables themselves?
Am I over-thinking this?
When you're paying for SQL by the MB and generate a lot of data (with a
fair amount of churn) you want to keep it optimized and efficient,
right?
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Jul 23, 2005
I've just found a blocking lock occuring in a SQL Server.[color=blue]>From the waitresource, I found that the blocker has the following[/color]information:wait_info: PAGEIOLATCH_EXwait_resource: 14:1:564312And the blockee has the following information:wait_info: LCK_M_Swait_resource: KEY: 14:405576483:2 (7501a5aa8355)The problem is that I do not know which object is the blocker holding,for I understand that for a PAGE lock, it is in the format ofdatabase_id:file_id:page_idI know the db_id, the file_id but don't know how to map the page_id(564312) to a table/index in the database.Can somebody shed some lights on this? thks a lot.
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Jul 20, 2005
Hello,I not exactly sure how to determine the table when given the followinginformation:--Could not find the index for RID '999999' in index page('1:99999999'), index id ), database (whatever).--Can you someone tell how I use the system tables to determine whattable this index corresponds to? I'm assuming I used sysindexes andsysobjects somehow.Thanks in advance,JGB_DBA
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Dec 3, 2007
I am attempting to understand the behaviour of a nonclustered index in regards to page splitting.
If I had the following table:-
Col1, Col2, Value
This table has a Clustered index on Col1, Col2 and a NonClustered index on Col2 and include Col1, Values.
If inserts into Col1 were causing page splits in the Clustered index, what are the effects on the NonClustered index?
I am attempting to understand what happens to the NonClustered index in this scenario so that I can make a decision on what fillfactor to use.
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May 22, 2006
I have a page that has a drop down control that is used to control the items in a FormView. The drop down is bound to one SQLDatasource while the FormView is bound to another SQLDataSource. I've got everything working great. Selecting an item in the drop down reveals the details in the form view. the Form can be opened for editing and deleting. I even have the Insert working. But there lies my problem. Once the Insert is executed I'd like to take the Index value of the recently submitted item and set it to the SelectedIndex of my dropdown. Here is the code for each of the SQL events Sub FormViewUpdated(ByVal sender As Object, ByVal e As FormViewUpdatedEventArgs) Handles FormView1.ItemUpdated
confirmation.Visible = True
confirmation.Text = "<img src=""../img/smiley36.gif""> Your record has been updated."
Dim index As Integer = Me.DropDownList1.SelectedIndex
DropDownList1.DataBind()
Me.DropDownList1.SelectedIndex = index
End Sub
Sub FormViewDeleted(ByVal sender As Object, ByVal e As FormViewDeletedEventArgs) Handles FormView1.ItemDeleted
confirmation.Visible = True
confirmation.Text = "<img src=""../img/smiley36.gif""> Your record has been deleted."
DropDownList1.DataBind()
FormView1.ChangeMode(FormViewMode.ReadOnly)
End Sub
Sub FormViewInserted(ByVal sender As Object, ByVal e As FormViewInsertedEventArgs) Handles FormView1.ItemInserted
confirmation.Visible = True
confirmation.Text = "<img src=""../img/smiley36.gif""> Your record has been inserted."
DropDownList1.DataBind()
End Sub
I would like to do something similar to the Updated event in the Inserted sub. Notice I have a Me.DropDownList.SelectedIndex bit...I'd like to be able to set a variable to the new ID and then set the Me.DropDownList.SelectedIndex to that variable. My stored proc for the Insert reads like
ALTER PROCEDURE dbo.usp_INSERTHelp_Faq
(
@FAQQuestion varchar(500),
@FAQText ntext,
@FAQIndex varchar(500),
@ModifiedBy int,
@Help_FAQID int OUTPUT
)
AS
INSERT INTO Help_FAQ (FAQQuestion, FAQText, FAQIndex,ModifiedBy, Views)
VALUES (@FAQQuestion,@FAQText,@FAQIndex,@ModifiedBy,0)
SELECT @Help_FaqID = @@Identity
RETURN
So, the Stored Proc is set up to return the latest ID. Also, my SQLDataSource for the FormView has an InsertParameter: <asp:Parameter Direction="Output" Name="Help_FAQID" Type="Int32" />
Any thoughts on how to close the loop here? How do I get my hands on the new Help_FAQID?
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Jan 25, 2008
Table A
5.6GB
80 million rows
Initial Page Space Used = 85.7% (sys.dm_db_index_physical_stats - avg_page_space_used_in_percent)
Index and data size are almost unchanged after an ONLINE rebuild of the clustered index. Page count actually goes up by 800. No fill factor or pad index settings. Page space used = 99.2%
During an OFFLINE rebuild the page count drops by ~20%. Page space used = 99.8%.
How can the pages be 99.2% used yet the number of pages hasn't gone done from the ONLINE rebuild?
I'm getting the feeling a shortcut was taken somewhere. Does an ONLINE rebuild only reorganize leaf level index pages but not any of the upper levels? Essentially it puts the pages in order but doesn't do any structure consolidation like OFFLINE?
It would seem that you're missing out on some of the benefits of defragmenting if your data is still spread across more pages and you don't get as many rows per read or it takes more reads to go down your tree to get to your data.
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Apr 9, 2015
i have one col in a nonclusted index which is bigint 8 bytes follwoing result shows min_record_size_in_bytes and max_record_size_in_bytes is 20 that is 12+8 page size is 8 kB. does that mean a record will use 20 bytes in a page or it will only use the space equalent to data stored in the col.what i have seen is page count is same weather i put some data in the col or null
select * From sys.dm_db_index_physical_stats(9,343,null,null,'DETAILED')
database_idobject_idindex_idpartition_numberindex_type_descalloc_unit_type_descindex_depthindex_
levelavg_fragmentation_in_percentfragment_countavg_fragment_size_in_pagespage_countavg_page_
space_used_in_percentrecord_countghost_record_countversion_ghost_record_countmin_
record_size_in_bytesmax_record_size_in_bytesavg_record_size_in_bytesforwarded_
record_countcompressed_page_count
999208304101HEAPIN_ROW_DATA102.9527559055118116253.187540514.196627131208358500016516516500
9992083041141NONCLUSTERED INDEXIN_ROW_DATA202553.21699.3544600938967585000202020NULL0
9992083041141NONCLUSTERED INDEXIN_ROW_DATA2101115.510254509513221600262626NULL0
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Jul 16, 2015
We noticed a deadlock 3-4 weeks ago on a table (table1) and deadlock graph was captured.
When I am analyzing the deadlock graph, page number using DBCC PAGE, I am getting the object id for a different table (table2). But deadlock graph shows the name of the object as table1.
Is it possible that subsequent defragmentation of indexes would have caused the respective page id to got re-allocated to a different table? I checked the deadlock graph lately only after 3-4 weeks.
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Nov 11, 2015
I have created one reports but all the records are displaying on one page.find a solution to display the records page by page. I created the same report without group so the records are displaying in page by page.
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Oct 20, 2006
please explain the differences btween this logical & phisicall operations that we can see therir graphical icons in execution plan tab in Management Studio
thank you in advance
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Nov 28, 2006
Hello I have a project that uses a large number of MS Data access pages created in Access 2003 and runs on MS SQL2005.
When I am on lets say my client, (first page in a series) data access page and I have completed the fields in the (DAP), I am directing my users to the next step of the registration process by means of a hyperlink to another Data access page in the same web but in a linked or sometimes different table.
I need to pass data entered /created on the first page to the next page and populate the next page with some data from the first page / table. (like staying on the client name and ID when i go to the next page)
I also need the first data access page to open and display a blank or new record. Not an existing record. I will also be looking to creata a drop down box as a record selector.
Any pointers in the right direction would be appreciated.
I am some what new to data access pages so a walk through would be nice but anything you got is welcome. Thanks Peter€¦
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Oct 16, 2006
The following objects are placed on the Report body of the Report pane of SQL Server 2005 Reporting Services :
<textbox: expression1>
<textbox: expression2>
<table:table1 with at least 30 columns and 30 expressions>
<textbox: string1> - considered as the Title in the Footer section of the report
<texbox:string2> <textbox:expression3>
<textbox:string3> <textbox:expression4>
<textbox:string4> <textbox:expression5>
<textbox:expression6>
I can't find any explanation why is it string1 and string 2 of the footer section of my report displayed separately from the expression3 which is aligned on it and the rest of the object on the second page.
The expected design is that all Footer items should be displayed together of whether it is placed on the first page or on the last page.
As a workaround of this, I converted string 1 into an expression (Added = and enclosed the string with double quote).. As a result, all of the items in the Footer section are now placed together on the last page of the report.
I also remember one of the issue I encountered before where the Footer items where placed together on the first page and still have space at the bottom of the page, but then expression 6 is forced to display (alone) on the last page of my report.
I can't find any discussion related to this, I wish somebody could give me an idea why RS behaved like this.
Thanks in advance
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Feb 14, 2008
Fit an intere table in same page without page break for save the excel export.
My table has a Group for order my dates.
I need to have the intere table in the same page, i don't care about blank space at the end of the page.
I can't use the page break beacuse i need an excel export in a unique sheet..
I have tested.. every page break..you'll have a different sheet in your excel export
I need something like this
page 1
Zone
1
2
3
4
5
6
7
7
8
9
..
page 2
Zone
1
2
3
4
5
6
7
7
8
9
..
but an unique sheet in the excel export
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Jul 17, 2007
Hello,
If I have a report that includes a page header, the report viewer will render the report at the full width, but if I hide the page header and show only the body it will use the absolute width of the report.
I have a 7" wide report, with .75" borders set on each side.
Interactive & Print size are set to 8.5x11
Changing these sizes has no effect on the behavior of the viewer, which appears to ignore them.
When I view this report in the local viewer the contents fill the window if there is no page header.
If I enable the page header then the report is drawn at 8.5" wide, leaving a _big_ white border on the right side.
Any comments or workarounds that anyone knows? I know the local viewer is not a standard configuration (at least it seems) but it is what we need to use.Thanks,//Andrew
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Sep 21, 2006
Hi, I wanted to know that can we access a webpagefrom a store procedure in sql server 2000 like we run a exe file from sql server. Bye.
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Jul 20, 2007
Hi,
I issued this command on Tempdb but it doesnot shrink the file.
dbcc shrinkfile (tempdev_3,1)
go
Messages:
-----------------------------------------------------------------------------------------------------------
DBCC SHRINKFILE: Page 4:11283400 could not be moved because it is a work table page.
-----------------------------------------------------------------------------------------------------------------------------------------------
I have checked that there are no tables associated with any user in tempdb. Any help is appreciated.
Regards,
Razi
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Apr 16, 2007
How can I print a field that is in the dataset on each page? I added a textbox in the Page Header and use =Fields!ProjectName.value in the value property. I got an error "Fields cannot used in page header and footer."
How can I have the table header shows on each page? Currently if the data goes to the second page, there is no table header.
Thanks.
DanYeung
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May 26, 2008
Hi Team,
When i view the Report from SSRS Report preview Tab it's working fine, But when i deploy that and try to view in the IE
I am seeing the Body background color in between the image and page border of the page footer how to solve that?
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May 16, 2008
Hi All,
In my SSRS report. I have a report which has only one page. In preview it is showing as only 1 page but when I am printing the report. I am getting two printouts with the second page as a blank.. Please help me in printing the page that contains report. Intially I used a Page header, at that it used to print the blank page with a header only. Now as I removed the header it is printing the page without header i.e Blank Page.. So please help me in prinitng a single page that has the report. It is urgent,..
Thanks
dotnetdev1
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May 7, 2015
I have a report with multiple tables. I need to show each tables in different pages. When there is no data for tables/tables , it is coming with the next table which has data. I have given "Add a page break after" option in the tablix but still the tables are coming together when no data available. How can I show it in different page?
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Mar 12, 2015
I have a report with tablix. when tablix returns no rows Footer is coming all the way up . How to display the footer at the bottom of the page all time.
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Nov 11, 2015
How do I add a hard page break in the middle of a two page report? I use Microsoft reports for windows.
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Apr 15, 2008
In SRSS 2005 (SP2) my page header seems to take up the same amount of space on the
1st page it would take if it were to print; I have PRINT ON FIRST PAGE set to
false - the header doesn't print - it just leaves the same amount of space.
How do you get the report to ignore that. I do have a report header built
into the body of my report. I have tested this by increasing the size of my
page header and it does move the report up or down on the 1st page by that
amount.
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Jan 23, 2008
I'm hoping that someone can shed some light on this for me... I'm using SSRS SP2 and I have a basic report using a single list object which, at the moment, should print only two pages based on the results of the underlying query. When previewing the report, it shows the two pages. But when the report is printed or exported, there is a blank page before each report page.
What I've done so far:
1) Verified the properties of the list object and made sure that 'Insert a page break before this list' is not checked
2) Ensured that there are no hidden objects that could be causing this behavior
3) Ensured that the report size + margins are within the boudaries of an standard 8.5x11 paper size
Any suggestions on something that would solve this issue?
Sam
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Sep 28, 2015
I am running a DBCC SHRINKFILE on "FILE1" of a database (it has fileid = 1)...intent is to remove 70GB of file space:
DBCC SHRINKFILE (N'FILE1' , 400000).
For the SPID that's doing the shrink, In activity monitor you can see:
Waittype: PAGEIOLATCH_EX on resource: 9:3:15411328
(the DB is dbid=9)
But why does it need a page from fileid=3? Are there page dependencies between files that prevent moving a page within a given file? Does it need that fileid3 page to come along?
Its just sitting there in the SUSPENDED state for the last hour....I am going to leave it another 5 hours or so before cancelling.
The dm_exec_requests has an estimated percent complete at 83% and holding....not sure if I can believe that.
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Nov 13, 2007
Hi all
I have a problem which I am really struggling with. I have a report that normally spreads over three pages. We have a list setup so that for each customer it picks up fees and expenses and displays it in sections. We have a page break after FEES so that expenses start on a new page. FEES and expenses are tables.
We need to have a page footer set for the bottom of the report but to appear on the first page only per customer. I.e. we do not want it showing on the EXPENSE pages. We have played with the IIF command but can not seem to print htis per customer only by using global variables.
=IIf(Globals!PageNumber=1,"(Please note 30 day invoice period)
The example above however only prints on the first page of the entire report. So if three customers appear then this will only appear for the first customer and I have a feeling I may not be able to link this to list.
If I can not use a page break and enter this into the list then I have a problem with the text field moving up and down depending on the size of the FEE section. For example if 5 fees are brought back then the text field will be lower then a customer that has only 2 fees.
I after a solution that can either allow my page fotter to appear every time a new customer appears on a page and hiddern for the sub sheets. Or the ability to allow my text field to start at a fixed position on my report. Has anyone had a similar issue.
thank you
Michael
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Jan 23, 2008
Hi:
I made a report that is 10 pages long. I like to show all the data in one page (after deployment). Any idea if this is possible?
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Feb 27, 2008
Hi - I am pretty new to Reporting Services. I need to create a report where a single result row from the Select Statement populates an entire page of data. The regular grid or Matrix reports don't fit this need. Is there a simple way to do this?
Thanks - Dave
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Apr 3, 2006
Is it possible to force the content of the page footer to always display at the bottom of a report? I have a report that shows customer orders. It has its interactive height set to 5 inches. There is one customer order per report page. Most of the reports don't require 5 vertical inches (but some do).
How can I make sure that the stuff in the page footer (date, page number, etc.) always gets rendered in the same position for each report? Currently, the page footer follows the last detail line so the footer information sometimes is only midway down the report page.
Thanks.
BCB
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Jan 27, 2004
Hi
I would like to know if there is some way to find a row in a table by the RID that sp_lock returns :
for example
"SELECT * FROM Authors (UPDLOCK) WHERE name = 'John'"
sp_lock returns the locked row id :
2:328:11 (file#page#slot on page)
How do i get this row???
Thanks
PB
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