Analysis :: One Single User Can Bring SSAS Server Down
Jul 27, 2015
Running PivotTable reports in Excel 2007 which are linked to a SSAS Server 2008 R2 may consume high amount of memory and cause high CPU utilization.
Detail:users may set 7 or more dimensions in row section of a Pivottable report. Some of those dimensions were containing more than 10000 members.
When refreshing such a report, Analysis Services is consuming more than 16 GB of memory, cpu utilization often goes up to 80%.
To run this report it takes arround 10 minutes. During this time other users may be unable to run reports on the server.Is there a way to control expensive MDX queries caused by some users to ensure Service availability?
I have only 1 denormalized table that is being used in a SSAS Tabular model(which is about 3GB). I am doing a POC to convert it into a SSAS Multidimensional and explore it.
1st Question) I am seeing that there is no Primary Key(unique key) in the current denormalized table. (Tabular Model didnt require any primary key). But i think for Multidimensional the key is mandatory? Should i generate a composite key myself in a Named Query based on this table(in the DSV)?
2nd Question) What is the best way to design my Multidimensional Cube/Dimensions based on this single table?
Say if i comeup with a Composite Primary Key called (PK_ID) . Should i be splitting up my facts / dimensions in my DSV using Named Queries similar to below(Using the same PK for my dimension tables also?)
a) FactTable = Select PK_ID, Qty1,Cost1,Price1,Amount1 from Table1 b) StoreDim = Select PK_ID, StoreName,StoreDese from Table1 c) ItemDim = Select PK_ID, ItemName,ItemDesc from Table1
I need to limit the sessions to access to SSAS cube to one per user. For example, if a customer uses Excel to check a cube, two or more users cannot use the same session or account.
I am trying to implement data masking based on user login and not sure why this is not working. I have the dimensions DimBrand, DimProduct and DimUser. I should mask the BrandCode with 'XXXX' nothing but in the report all the BrandCode should appear but few of the code will be masked if the user is not belongs to that group. I have a fact table FactProduct in this. In the cube I created all these 3 dimensions and the fact table. I created a new dimension DimBrandMask and I separated the code over there with a relationship with the actual DimBrand dimension. In the cube a reference relationship is set up with the measure group. Created a role with read access.
In the dimension data tab of role I put the below MDX to allowed set.
Is it possible to install 2 SSAS instance (one default and one named) and have them access a single sql server instance (default) all on the same server?
12.) Now you have two different tables - each with two columns.Table #1Single Column2 rows with a value equal to 1 and 2Table #2Single column2 rows with a value equal to 2 and 4Construct a statement returning in a single column all the valuescontained, but not the common values.This is another question that I got in an interview, I missedit.......Thanks,Tim
I have written a VB/SQL Server based application. The application uses stored procs and the SQL Server security model to handle logins and permissions. My partner and I want to sell the applicaiton to specific businesses and offer a rental program for smaller companies that would like to use the application to connect to an internet based database. The application uses TCP/IP with a specific port number to connect to the database so it can be used in or out of LAN.
If we rent the application, maintenance is simple. I just create a user in the database with the login/password the user would like and viola they have access to the data.
When a company wants to purchase the program to use in-house, we would like to offer two alternatives: #1 a single user or #2 a multiple user SQL Server database.
My question is if a company purchases the single-user version, how can we keep them from adding users to their database. In other words, since we have no control over the database at the client's location, how can we ensure that it remains a single-user database?
how can use this mdx script in the calculation part of a cube, will i simply dump it in the script form by starting with the 'create member current cube.
[measures].[test]' select [measures].[abc] on 0, [xyz].[xyz].(&0):[xyz].[xyz].(&60) on 1 from ( select (tail([month].[month].[month].members,6))on 0 from [cube])
When I try to connect from excel , to SSAS Getting error message like
A Connection attempt failed because the connected party did not properly respond after a period of time or established connection failed because connected host has failed to respond.
If I connect to SSIS , I'm able to connect correctly.
Why I'm getting this error and how to overcome this?
I am doing workload analysis on SSAS - Tabular (2012), I have perfmon logs captured and want to run through PAL. I am looking out for threshold file for SSAS tabular 2012/2014.
I have a Calculated Member in SSAS that I need to adjust based what the current member is.
The code is below
CASE WHEN [Measures].[End LIS] = 0 AND "HELP" THEN CASE WHEN [Measures].[Beginning LIS] = 0 OR [Measures].[Beginning LIS] + [Measures].[Beginning LIS] + [Measures].[NETACTIVATIONS] = 0 THEN NULL ELSE ROUND([Measures].[Disconnects]/(([Measures].[Beginning LIS] + [Measures].[Beginning LIS] + [Measures].[NETACTIVATIONS])/2) * 100 ,2) END ELSE ROUND(([Measures].[Disconnects] / [AVERAGELIS] * 100) ,2) END
In English - i need this to translate to - of End LIS is 0 "AND the current member is the current month and current year" THEN carry on
I have two ssas databases with same number of cube in them. Cube names are also same. I want to merge/combine these two as one so that my reporting application may see a single database having measures/dimensions from both databases.Is it possible?I am doing this to achieve loose coupling between base and regional development work. if above is not possible, any way to achieve minimum dependency between a base and a regional project.
I am facing issue with partition processing. I am having a SSAS cube which is having 5 partitions. These partitions are processed through a sql server job using SSIS packages. In packages I used SSAS process task to do this.Now problem is, job is running successfully and showing that the step which is having partition process also fine.But data is not updating in the partition. While checking the partition properties, it is not updated with recent date and time.
When I try to manually process the partition, it is getting succeeded and recent data is getting reflected with recent date and time.Package configuration is done in job itself.
I got this error from a sql agent driven cube process yesterday and am wondering where the log of errors is created...
Executed as user: xservername$. <return xmlns="urn:schemas-microsoft-com:xml-analysis"><results xmlns="<root">http://schemas.microsoft.com/analysisservices/2003/xmla-multipleresults"><root xmlns="urn:schemas-microsoft-com:xml-analysis:empty"><Messages xmlns="urn:schemas-microsoft-com:xml-analysis:exception"><Warning WarningCode="1092354050" Description="Server: Operation completed with 1042 problems logged." Source="Microsoft SQL Server 2008 R2 Analysis Services" HelpFile="" /></Messages></root></results></return>.
The step failed.if its a property I can see related to the server in ssms, which property as I see lots of stuff with the word log in the property name.
Is it possible to have more than one cube under one SSAS database? For example I have a database "Test" and in this the cube exist is "TestCube", is iit possible to deploy another cube "TestCube2" under the Test databse?
If yes then what is the process to do that, the reason I am asing is there are some common dimensions used n both the cubes and I am not sure what is the best way so that I can use the shared dimension?
I've been working with SSAS for a good few years now but I keep bumping into this problem - my users are trying to build a measure that is based on a calculated attribute and finding it difficult to work out how to write the MDX to do so. Intuitively, they thought a Calculated Member would work, but I don't think a Calculated Member is quite the same thing from my understanding.
So, here's the scenario.
We have a Product Dimension. We have a Measure that is the Number of days the Product took to make, e.g. 5 days. We also have a Product Count measure that counts the number of Products.
The user would like to write a calculated measure that works out the number of products that took <5 days, 5-10 days, 10-15 days etc.It would be easy to write a set of calculated measures for each of these bandings, but the user wants effectively a single dynamic attribute to use in the calculation in order to automatically distribute these values across the columns in their pivot table.
Is this even possible? I was thinking I could build an attribute on the Product Dimension in the ETL to do this quite easily, but the user wants to be able to change the bandings on the fly by changing the MDX for the attribute, rather than go back to the developer every time.
I need to find the percentile using cube so i am using the below formula :
((n-1) * p /100) -1
n= count of number of array records p= percentile
I am using below MDX query:
WITH MEMBER [Measures].[PV] AS 25 Member [Measures].[CntCT] as Count(NonEmpty([Tb City].[City Name].&[DC], [Measures].[CPT1])) Member [Measures].[PVInt25] as Int(((([Measures].[CntCT] - 1)* [Measures].[PV])/100) - 1) Member [Measures].[PVC] as ([Measures].[CPT1],Order(NonEmpty([Tb City].[City Name].&[DC],[Measures].[CPT1]), [Measures].[CPT1],ASC).Item([Measures].[PVInt25]))
Select [Measures].[PVC] on columns, {[Tb City].[City Name]} on rows from test;
The line 2: Member [Measures].[CntCT]
In that i need to find the n count of rows where city is DC (City is my Dimension) in Measures CPT1
But currently it is giving the result 1 instead in actual in my test cube there is the city DC exists with 23 CPT1 rows count.
I tried the below query:
SELECT NON EMPTY {[Tb City 1].[City Name].[City Name].&[DC] } ON COLUMNS, NON EMPTY { ( [Measures].[Tb Main Count] ) } ON ROWS FROM [test]
Above query gives me the correct count i.e. 23 but i need to get the result of above query in line 2 of MDX query:
I have a requirement where I need to show the maximum value in grand totals but for the dimension members the same measure has to sum.
For ex: lets say I have a measure called Test and this is a base measure. The aggregation type set to this is SUM.
For this same measure the grand totals should not show the sum instead it should show the maximum value of the dimension members which is being analyzed across.
I want to implement population data in sales cube.
Fact table has customer code which is foreign key of Customer master dimension which in turn is linked to census data dimension. Census data dimension have city wise population data having foreign keys of zone and state.
I was trying to update an SSAS database on a test server and got the following error when trying to deploy from Visual Stuido. I get a similar error in SMS. I tried to delete the database before deploying but I get an error when trying to delete. I rebooted the server.
(SQL Server 2005 R2, Windows Server 2008R2.)
Error 1 File system error: The following file is corrupted: Physical file:
?D:Program FilesMicrosoft SQL ServerMSSQL.2OLAPDataHeidtman Sales Cube.0.dbDim Age.0.dim5.Dim Age.Dim Age.dstore. Logical file . Errors in the metadata manager. An error occurred when loading the Age dimension, from the file, '?D:Program FilesMicrosoft SQL ServerMSSQL.2OLAPDataHeidtman Sales Cube.0.dbDim Age.5.dim.xml'. Errors in the metadata manager. An error occurred when loading the Heidtman DW cube, from the file, '?D:Program FilesMicrosoft SQL ServerMSSQL.2OLAPDataHeidtman Sales Cube.0.dbHeidtman DW.7.cub.xml'. 0 0
how to move the dimension attributes from currency to geography and vice versa(i.e need to change their positions) in SQL Server 2012. i need currency to be placed in top of geography or geography below currency.
I am thinking of a possible design where the cube will never go offline.
Usually when I do some code changes on my cube the cube goes offline and I need to Full Process it again to get it back .
However , in cases where the cube is extremely critical for the business users , it would be great if I can deliver a solution where the cube never goes down.
I'm trying to do a currency conversion with an MDX statement in my Cube SSAS 2012.
Here is my script :
SCOPE( LEAVES([Entity]) ); SCOPE( LEAVES([Time]) ); SCOPE( LEAVES([Currency])); SCOPE( [Account].[Account].[Total ACCOUNT].members) THIS = ([Measures].[Value],[Currency].[Currency].[Local])*([Measures].[Value],[Account].[Account].[Fx Rate]); END SCOPE; END SCOPE; END SCOPE; END SCOPE;
The problem is I want to exclude frome the scope Currency my local Currency in order to make the conversion only if a currency (€,$, £) is selected. I tried the following syntax but it always return a "MDX script is not valid" :
