Skip to main content

Microstrategy Caches explained

Microstrategy Caches

Improving Response Time: Caching

cache is a result set that is stored on a system to improve response time in future requests. With caching, users can retrieve results from Intelligence Server rather than re-executing queries against a database.


To delete all object caches for a project
1In Developer, log into a project. You must log in with a user account that has administrative privileges.
2From the Administration menu, point to Projects, and then select Project Configuration. The Project Configuration Editor opens.
3Expand Caching, expand Auxiliary Caches, then select Objects.

To delete all configuration object caches for a server

1Log in to the project source.
2From the Administration menu in Developer, point to Server, and then select Purge Server Object Caches.
4Click Purge Now.


To purge web cache follow the steps in the link below:

To purge various other caches go the MSTR link below: 

Improving Response Time: Caching

A cache is a result set that is stored on a system to improve response time in future requests. With caching, users can retrieve results from Intelligence Server rather than re-executing queries against a database.

Intelligence Server supports the following types of caches:
  • Page caches: When a user views a published dossier the Intelligence Server generates one cache per page, so that the cache can be hit when the user switches between pages.

  • Result caches: Report and document results that have already been calculated and processed, that are stored on the Intelligence Server machine so they can be retrieved more quickly than re-executing the request against the data warehouse. Intelligent Cubes can function in a similar fashion to result caches: they allow you to store data from the data warehouse in Intelligence Server memory, rather than in the database. Intelligent Cubes are part of the OLAP Services add-on to Intelligence Server. For detailed information about Intelligent Cubes.

  • The History List is a way of saving report results on a per-user basis. 

  • Element caches: Most-recently used lookup table elements that are stored in memory on the Intelligence Server or Developer machines so they can be retrieved more quickly. 

  • Object caches: Most-recently used metadata objects that are stored in memory on the Intelligence Server and Developer machines so they can be retrieved more quickly. 

You specify settings for all cache types except Page caches and History List under Caching in the Project Configuration Editor. Page cache settings are configured via Application Properties > Dossier Cache Management in MicroStrategy Workstation. History List settings are specified in the Intelligence Server Configuration Editor.
Result, element, and object caches are created and stored for individual projects; they are not shared across projects. History Lists are created and stored for individual users.
To make changes to cache settings, you must have the Administer Caches privilege. In addition, changes to cache settings do not take effect until you stop and restart Intelligence Server.


Comments

Post a Comment

Popular posts from this blog

Apply or Pass-through functions in Microstrategy

Ap ply (Pass-Through) functions MSTR Apply functions provide access to functions or syntactic constructs that are not standard in MicroStrategy but are provided by various RDBMS systems.. Syntax common to Apply functions Apply Function Name   ("expression with placeholders", Arg1, Arg2, Arg3, …ArgN) where: Apply Function Name  – is a generic name used for the predefined pass-through functions described above expression with placeholders  – is the string describing the actual expression or syntax that the engine uses while generating the SQL and which is sent to the RDBMS. The placeholders are represented by #0, #1, and so on. "#" is a reserved character for MicroStrategy. Arg  – is an argument that replaces the parameter markers in the pattern. Arg1 replaces #0, Arg2 replaces #1, and so on. There are   five  pre-defined Apply functions to replace regular, predefined functions of the same type. For more details, cli...

Case functions Microstrategy

Ca se functions Microstrategy Case functions return specified data in a SQL query based on the evaluation of user-defined conditions. In general, a user specifies a list of conditions and corresponding return values. Case This function evaluates multiple expressions until a condition is determined to be true, then returns a corresponding value. If all conditions are false, a default value is returned.  Case  can be used for categorizing data based on multiple conditions. This is a single-value function. Syntax Case ( Condition1 ,  ReturnValue1 ,  Condition2 , ReturnValue2 ,...,  DefaultValue ) Example Case(([Total Revenue] < 300000), 0, ([Total Revenue] < 600000), 1, 2) sum(Case (Day@DESC in (“Sat”,”Sun”), Sales, 0) {~+} Sum(Case(Category@DESC In("Books","Electronics"),Revenue,0)){~+} CaseV (case vector) CaseV  evaluates a single metric and returns different values according to the results. It can be used to perfo...

MicroStrategy URL API Parameters

MicroStrategy URL Structure The following table summarizes the root URL structure used for every request to MicroStrategy Web. Environment Main Application URL Administration URL J2EE http://webserver/MicroStrategy/servlet/mstrWeb http://webserver/MicroStrategy/servlet/mstrWebAdmin .NET http://webserver/MicroStrategy/asp/Main.aspx http://webserver/MicroStrategy/asp/Admin.aspx Every request sent to MicroStrategy Web calls a central controller. Parameters are appended to  Main.aspx  or  mstrWeb  (in a .NET and J2EE environment, respectively) to indicate to the controller how the request should be internally forwarded and handled. The following examples show a URL for accessing a MicroStrategy folder when the user does not have an existing session. The URL contains not only the parameters needed to connect to MicroStrategy Web, but also the parameters needed to log on and create a session. J2EE environment: <a href="http:...

Microstrategy "Error type: Odbc error. Odbc operation attempted

 "Error type: Odbc error. Odbc operation attempted: SQLExecDirect. [HYT00:0: on SQLHANDLE] [MicroStrategy][ODBC Oracle Wire Protocol driver]Timeout expired" is shown when executing reports from Web When users are trying to execute some reports in MicroStrategy web in particular, they may receive the Error “SQL Generation Complete Index out of range” and “Timeout expired” error as shown below: Possible Causes: One possible cause is that the MicroStrategy Intelligence Server using a cached database connection that was already dropped by the RDBMS. To resolve this: Admin should delete the database connection caches and create a new DSNs in case they are sharing DSNs to connect to different databases. In addition, change the settings for the ‘Connection lifetime’ and the ‘Connection idle time out’.  Follow the steps below to perform the mentioned changes and verify the report after each step and some of the settings require i-server r...

RunningSum calculation only on the metric subtotal in MicroStrategy

RunningSum calculation only on the metric subtotal in MicroStrategy Here are the series of steps to setup report objects in which metrics and subtotals so only the  subtotal field  will contain the  RunningSum  and the  regular metric values  will be  standard sum values . 1) Create Metric 1 which is the sum of the fact that is to be in the columns. 2) Create Metric2 as the RunningSum of Metric1.  NOTE:  The  sortby  parameter for the RunningSum should be set to whichever attribute you want the report sorted by. 3) Create Metric3 as Metric1 + (Metric2 x 0) 4) Create a new subtotal called "Max" which is defined as Max() 5) On the Subtotals/Aggregation tab for Metric 3, set the Total subtotal function to be "Max" and select the check box for "Allow Smart Metric" 6) Create the desired report and place the 3 metrics on the report.  NOTE:  Only Metric3 is required on the gri...

Export a Report Services document to Excel with formatting using URL API

Export a Report Services document to Excel with formatting using URL API in MSTR Web In order to export a document in excel format using the URL API, the executionMode must be set to 4.  If excutionMode is not provided in the URL, by default PDF will be used as executionMode.   Below are the list of parameters that the URL must contain in order to execute correctly.   evt= 3069 src= Main.aspx.3069 executionMode= 4 documentID= 7E1644CA424F482DA811569FCE8127FF( Replace the document Id with your document ID)   Sample URL for .NET environment: http://WebServerName/MicroStrategy/asp/Main.aspx?evt=3069&src=Main.aspx. 3069 &executionMode= 4 &documentID= 7E1644CA424F482DA811569FCE8127FF    

Metric values are repeated across rows when a report is executed in MicroStrategy

Metric values are repeated across rows when a report is executed in MicroStrategy When comparing report results between DB Query Tool and MicroStrategy, some reports show repeated metric values in MicroStrategy where there were none in DB Query Tool. To illustrate the issue, a fact table CAT_ITEM_SLS has been added into the MicroStrategy Tutorial project and populated with a small set of three rows. CAT_ID ITEM_ID REVENUE  1 1  10   1 2  20  2  2  30  Report results in DB Query Tool: Report results in MicroStrategy: In MicroStrategy, the row for "Art As Experience" in the Spring 2007 catalog repeats the $20 value from the Winter 2007 catalog, where DB Query Tool shows the $30 value from the fact table. CAUSE The discrepancy occurs because the attribute elements for Catalog and Item are in a many-to-many relationship, but the attribute relationship in the MicroStrategy schema is defined incorrectly w...

Custom Tooltips in Microstrategy developer and Web

Custom Tooltips in Microstrategy developer and Web The following table describes the macros you can use to customize graph tooltips in both MicroStrategy Developer and MicroStrategy Web: Macro Information Displayed {&TOOLTIP} All relevant labels and values associated with a graph item. {&GROUPLABEL} Name of the graph item's category. This value is often the graph item's attribute element information, as attributes are commonly used as the categories of graph reports. {&SERIESLABEL} Name of the graph item’s series. This value is often the graph item's metric name information, as metrics are commonly used as the series of graph reports. {&VALUE} The value of a given data point. {&XVALUE} The X-value of a data point. Only applicable to Bubble charts and Scatter plots. {&YVALUE} The Y-value of a data point. Only applicable to Bubble charts and Scatter plots. {&ZVALUE} The Z-value of a data point. Only applicable to Bubble charts and Scatter plots. {...

Microstrategy Authentication Using the URL API

Microstrategy Authentication Using the URL API Users have to be authenticated before accessing functionality in MicroStrategy Web. Using the URL API, there are three ways for MicroStrategy Web to obtain the information needed to authenticate a user. Opening the login page to gather user for credentials    Bypassing the login page by providing credentials in the URL    Bypassing the login page by providing the session state in the URL A detailed explanation of each method for obtaining the authentication information is provided below. Opening the login page to gather user for credentials If the URL attempts to access a MicroStrategy Web page that requires login and no credentials or session state are provided in the URL, the user is redirected to the login page. If login is successful, the user is redirected to the specified page.   The sample URL shown below executes a report without providing authenticating information. Since the Repo...