Snapshot Generation Times Vary Substantially
Sep 25, 2007
HI all,
I implemented Pull snapshot replication about 3 weeks ago on a live server. Everything has been working very well and I really have no complaints. However, I am currently working towards optimization, which brings me to my question.
I have noticed that the snapshot agent will vary in the duration of time it takes to generate the snapshot.
Here is the job history:
9/25 - 3.48min
9/24 - 17min
9/23 - 17min
9/22 - 3.3min
9/21 - 17min
9/20 - 17min
9/19 - 3.39min
The distribution agent currently retains history for 12 hours and the snapshot agent runs once every 24 hours so I don't think this variation in performance could be related to a cache issue.
There are no sql jobs that are scheduled during this timeframe and both severs, Publication and Subscription, are decent boxes with very little load during the replication window.(currently 1am - 2am)
Any ideas why this variation in snapshot generation exists?
Thanks,
Michael
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Jun 20, 2007
Hi
I seem to have a strange problem when applying a snapshot when the tables in the publication have been updated while the snapshot was being generated.
Say for example there is a table called RMAReplacedItem in the publication. When the snapshot starts being applied to the subscriber, a stored procedure called sp_MSins_RMAReplacedItem_msrepl_css gets created that handles an insert if the row already exists (ie it updates the row rather than inserting it). However, after all the data has been loaded into the tables, instead of calling this procedure, it tries to call one called sp_MSins_RMAReplacedIte_msrepl_cssm - it takes the last letter of the table name and adds it to the end of the procedure name.
The worst part is that this causes the application of the snapshot to fail, but it doesnt report what the error is, and instead it just tries applying the snapshot again. The only way i have managed to find which call is failing is to run profiler against the subscriber while the snapshot is being applied and see what errors.
I have run sp_broswereplcmds and the data in there is what is applied to the subscriber - ie the wrong procedure name.
All the servers involved are running sql 2005 service pack 2. The publisher and subscriber were both upgraded from sql 2000, but the distribution server is a fresh install of sql 2005.
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Jul 11, 2007
Hi,
I am running RS 2005 and Analysis Services 2005. I was able to get RS to connect to the OLAP database (via stored credential) when generating snapshot. However, it failed when processing MDX script in the report dataset. The same report works fine in browser and VStudio, but only failed during snapshot or cache generation. Below is the error message and the affected MDX script. Any help would be appreciated!
An error has occurred during report processing. (rsProcessingAborted) Get Online Help
Get Online Help
Query execution failed for data set 'PU_Floorcovering'. (rsErrorExecutingCommand) Get Online Help
Incorrect syntax near '{'. Incorrect syntax near 'Business Type'. Incorrect syntax near 'Facility'. Incorrect syntax near 'Production Units Reporting UOM'.
WITH SET [UOM] AS
' ([Raw Materials Source UOM].[Source UOM].ALLMEMBERS - [Raw Materials Source UOM].[Source UOM].[All]) *
([Raw Materials Reporting UOM].[Reporting UOM].ALLMEMBERS - [Raw Materials Reporting UOM].[Reporting UOM].[All]) *
([Production Units Source UOM].[PU Source UOM].ALLMEMBERS - [Production Units Source UOM].[PU Source UOM].[All]) *
([Production Units Reporting UOM].[PU Reporting UOM].ALLMEMBERS - [Production Units Reporting UOM].[PU Reporting UOM].[All])'
SELECT NON EMPTY
{
[Measures].[Weight], [Measures].[Weight per Production Unit Converted]
} ON COLUMNS,
NON EMPTY
{
(([Time].[Year].ALLMEMBERS - [Time].[Year].[All]) *
([Raw Materials].[Category Type].ALLMEMBERS - [Raw Materials].[Category Type].[All]) *
([Raw Materials].[Category].ALLMEMBERS - [Raw Materials].[Category].[All]) *
[UOM])
}
having not IsEmpty([Measures].[Weight]) And ([Measures].[All Facilities Production Unit Converted], [Production Units].[UOM]) > 0
DIMENSION PROPERTIES MEMBER_CAPTION, MEMBER_UNIQUE_NAME ON ROWS
FROM
(
SELECT ( { [Business Type].[Business Type].&[{11116DDD-FD7B-46AA-A4D8-73492E220001}]}) ON COLUMNS
FROM
(
SELECT ({[Raw Materials Reporting UOM].[Reporting UOM].&[Lb]}) ON COLUMNS
FROM
(
SELECT ({[Production Units Reporting UOM].[PU Reporting UOM].&[Yd2]}) ON COLUMNS FROM [Pinnacle]
)
)
)
WHERE
(
[Facility].[LocationType].&[1],
[Facility].[Initiative - InitiativeFacility].[Initiative].&[{11136DDD-FD7B-46AA-A4D8-73492E220002}]
)
CELL PROPERTIES VALUE, BACK_COLOR, FORE_COLOR, FORMATTED_VALUE, FORMAT_STRING, FONT_NAME, FONT_SIZE, FONT_FLAGS
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Jan 18, 2013
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Code:
With CTESource(Total, ID, Source, Program) AS
(
SELECT count(Inquiry.ID) as Total, Referral.InquiryID_fk, Source, Inquirer.Program from Referral
Inner Join Inquiry on Inquiry.ID = Referral.InquiryID_fk
Inner Join Inquirer on Inquirer.ID = Inquiry.InquirerID_fk
[code]....
The total inquiries can be higher than the source totals since a source isnt required in the system as well as there does not have to be admissions regardless of inquiry count.
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Feb 17, 2006
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I have the following table:
Policy Sequence LossDate Description Amt
123 1 9-1-2012 property 100
123 2 10-1-2012 property 200
345 1 9-1-2012 property 100
345 2 10-1-2012 property 100
678 1 9-1-2012 property 100
I want to select the data as follows:
Policy LossDate1 Description1 Amt1 LossDate2 Description2 Amt2
123 9-1-2012 property 100 10-1-2012 property 200
345 9-1-2012 property 100 10-1-2012 property 100
678 9-1-2012 property 100 NULL NULL NULL
Is there a way to do this using T-SQL?
The max sequence number can vary, so far the max has been 12, but may be higher in the future.
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If im to do the top N in excel i use pivot table functions to get the top N by whatever measure i pick from the dropdown:I cant do this in powerbi builder though, as it works very differently, or powerview which again is done differently.Do i have to take a different approach depending on the report platform, Â or is there a way to do this in the tabular model that will work on any platform?
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Oct 17, 2007
Hello, all
We are trying to work out a memory problem associated with a SQLCLR procedure we have developed.
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I initially suspected the problem was due to the idiosyncracies of how the BPool is allocated on SqlExpress and its 1GB buffer pool limitation, giving a 1GB MemToLeave region for SQLCLR allocations -- substantially larger than the default available on the server with it's default 256MB allocation (+128MB for thread stacks). That seemed to explain why a memory problem might not manifest itself on the client, but would on the server. I then altered the server to include an explicit "-g" parameter at startup, reserving 512MB for MemToLeave, but the query still fails with the same memory errors. I've tried values as high as 1GB (-g1024), but none have worked Our DBA has installed a recent hotfix associated with certain memory errors, to no avail.
It appears that the server will max out the CLR allocations at 102MB, regardless of the presence of the -g parameter. Could it be that the MemToLeave region really is that severely fragmented? There are still log messages indicating failures to reserve virtual memory...
One thing I notice is that the buffer's VM Reserved value never seems to change regardless of the value of the "-g" option. I would expect to see it decrease by the amount specified as reserved, eg -g 768 should leave, for example, something like 1.2GB VM Reserved for buffer pool allocation, but it doesn't. That tells me I'm not really establishing a larger MemToLeave area. Is this expectation incorrect?
Bottom line, we don't know why this procedure is running on the server, but not in SqlExpress. It is a procedure that connects to a remote Oracle database and collects about 14,000 records, but dies after sending about 7,000 or so records when run on the server. Again, the same query running against the same code on a SqlExpress box works perfectly.
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Thank You.
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Server:
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Render_Format = PDF
Username = Administrator
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Writemode = Overwrite
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