nq_session variables in obiee

Data Type Otherwise, in the Default initialization string box, type the SQL initialization string needed to populate the variables. For example, if you have weeks that end on Saturday, you might want to have the date of the most recent Saturday in a session variable, called perhaps PREVIOUSSATURDAY. Create a second session variable called MVCOUNTRY____ORCL, making sure to include four underscores between the variable name and the source name. In RPD, I created a new init block with session variable PRODUCT and row wise initialization is set. When a user belongs to multiple groups, include the group names in the same column, separated by semicolons (for example, GroupA;GroupB;GroupC). Click here to get started. For Initialization Block, select mvcountry_sebl_init. When the execution of session variable initialization blocks cannot be deferred, a message is displayed that explains why. Holds the name of the proxy user. It's why you can't see in the session manager a new value for the session. In the Variable Manager dialog, select Action > New > Repository > Variable. For session variable initialization blocks, you can select Row-wise initialization. By default, when you open the Initialization Block dialog for editing in online mode, the initialization block object is automatically checked out. Cube Contains the global unique identifiers (GUIDs) for the application roles to which the user belongs. To remove a variable from association with this block, select the variable and click Remove. Why must a product of symmetric random variables be symmetric? See "Examples of Initialization Strings" for examples. COMPANYID is the name of a physical column. Process COLUMN1 is having values VARIABLE1 , VARIABLE2 etc . Browser If you want the initialization block to be required, in the [Repository|Session] Variable Initialization Block dialog, select the Required for authentication option. Select the type of variable: Static or Dynamic. The names and values of the session variables reside in an external database that you access through a connection pool. In Expression Builder, click the Repository Variables folder in the left pane to display all repository variables (both static and dynamic) in the middle pane by name. Any legal SQL can be executed using an initialization block, including SQL that writes to the database or alters database structures, assuming the database permits the user ID associated with the connection pool to perform these actions. [nQSError: 23006] The session variable, NQ_SESSION.user, has no value definition. Custom Authenticator: For session variables. The approach Ive used, which is not ideal but has worked for me, is to hedge your bets in the Select statements. See Creating Initialization Blocks for more information. Data Visualization Determines if the initialization blocks required for authentication are executed. In the View Data from Table dialog, type the number of rows and the starting row for your query, and then click Query. You should set the logging level to 2 for the administrator to provide the most useful level of information. If the database object has the Virtual Private Database option selected, the Oracle BI Server matches a list of security-sensitive variables to each prospective cache hit. I am confused on how to use the non-system session variable in Answers, says, in column formula, in a filter and in title view. Select this option to set session variables after the initialization block has populated the value (at user login) by calling the ODBC stored procedure NQSSetSessionValue(). There are two types of repository variables: static and dynamic. The number of associated variables can be different from the number of columns being retrieved. Data Partition Session variables are primarily used when authenticating users against external sources such as database tables or LDAP servers. A repository variable has a single value at any point in time. When you have create a server variable, you have to reference it. This saves the resources which would have been used to execute these unnecessary initialization blocks. Then, you explicitly define session variables for each source. Design Pattern, Infrastructure This section provides information about working with session variables, and contains the following topics: Session variables are similar to dynamic repository variables in that they obtain their values from initialization blocks. Graph When Jane connects to the Oracle BI Server, her session contains three session variables from row-wise initialization: LEVEL, containing the value 8; STATUS, containing the value FULL-TIME; and GRADE, containing the value AAA. When you create SQL and submit it directly to the database (for example, when using database-specific SQL in initialization blocks), the SQL statement bypasses the Oracle BI Server. If you select Database as the data source type: If you select Database as the data source type, and do not select the Use OBI EE Server option. The user can alter some elements of the user interface by picking a style when logged on to Oracle BI Presentation Services. Data Persistence In the logical table source TIMES Fact from the logical fact table Times, let's fill in the where clause with the repository session variable. Graph For example, to filter a column on the value of the variable LOGLEVEL, set the filter to the variable NQ_SESSION.LOGLEVEL. Html You can then use the SQL IN operator to test for values in a specified list. "USER"), the syntax works. Data Partition When the value of a dynamic repository variable changes, all cache entries associated with a business model that reference the value of that variable are purged automatically. If you stop and restart the Oracle BI Server, the server automatically executes the SQL statements in repository variable initialization blocks, reinitializing the repository variables. You can also use this variable in a SQL statement. Ratio, Code Used for Oracle BI Presentation Services. If there are fewer variables than columns, extra column values are ignored. Using the Multi-Source Session Variable in a Logical Query. The default location for the nqquery.log file is: You can use the row-wise initialization option to create session variables dynamically and set their values when a session begins. Assume today is June 10. See "Assigning a Name and Schedule to Initialization Blocks" for more information. In offline mode, the Set values for variables dialog is displayed so that you can populate :USER and :PASSWORD. CREATE TABLE OBIEE_PROXY_USER ( PROXYID VARCHAR2 (100) NOT NULL, TARGETID VARCHAR2 (100) NOT NULL, PROXYLEVEL VARCHAR2 (100) NOT NULL) Insert some data : Create Session Variables for Proxy Functionality (inside the repository) Modify the instanceconfig.xml File for Proxy Functionality Here comes the more tricky parts For repository variables, you can specify the day, date, and time for the start date, as well as a refresh interval. Log, Measure Levels The value of LOGLEVEL (a number between 0 and 5) determines the logging level that the Oracle BI Server uses for user queries. This chapter describes how to use variables in the Oracle BI repository to streamline administrative tasks and dynamically modify metadata content to adjust to a changing data environment. Selecting the Use caching option directs the Oracle BI Server to store the results of the query in a main memory cache. In the Session Variable dialog, type a variable name. If a user is authenticated successfully, session variables can be used to set filters and permissions for that session. As with dynamic repository variables, session variables obtain their values from initialization blocks. Data Concurrency, Data Science How does the NLT translate in Romans 8:2? User A was able to login to OBIEE presentation and see assigned product ID's being filtered in the report. You open initialization block B, and then specify that block A will execute before block B. Legacy groups are mapped to application roles automatically. At run time, if an initialization string for the database type has been defined, this string is used. Using the Multi-Source Session Variable in a Data Filter. Mathematics Relational Modeling I need to create a Dashboard, where I can fill out one Dashboard prompt and set some request variables, and then have the default values in another dashboard prompt, or the prompt for an analysis be based on the variables set in the first prompt. When you select the Use OBI EE Server option, there is no need for a connection pool, because the SQL statement is sent to the Oracle BI Server and not directly to the underlying database. Relation (Table) This section explains how to create session variables. If the administrator user (defined upon install) has a Logging level defined as 4 and the session variable LOGLEVEL defined in the repository has a value of 0 (zero), the value of 0 applies. In addition, you can use Expression Builder to insert a constant as the default initializer, such as Date, Time, and TimeStamp. In one of my report columns I need to get value of session variables like VALUEOF (NQ_SESSION.COLUMN1). GUIDs for application roles are the same as the application role names. 1. Users can select a language on the sign-in page for Oracle BI EE, or they can change the language setting on the Preferences tab of the My Account dialog after signing in. System session variables are session variables that the Oracle BI Server and Oracle BI Presentation Services use for specific purposes. Right now I have @{biServer.variables['NQ_SESSION.TestVar1'] * biServer.variables[NQ_SESSION.TestVar3']} as the default value for a variable prompt. This variable has a possible value of 0 or 1. This SQL statement contains two constraints in the WHERE clause: ':USER' (note the colon and the single quotes) is the ID the user types when logging in. An error will generate if a session variable is used. Relational Modeling In the right pane, select the Application Roles tab, then double-click the application role for which you want to set data filters. This variable has a value of Yes. Monitoring If a semicolon must be included as part of a role name, precede the semicolon with a backslash character (\). After they are created, variables are available for use in Expression Builder. For session variable initialization blocks, you can also select LDAP Server or Custom Authenticator. Used for Oracle BI Presentation Services. Use the Initialization Block list to select an initialization block that will be used to refresh the value on a continuing basis. Dimensional Modeling The tables do not have to be included in the Physical layer of the metadata. OBIEE 11g - The session variable, NQ_SESSION.VARIABLE, has no value definition user11173172 Feb 20 2015 edited Feb 27 2015 Hello, I am seeing a strange issue when using SESSION variable in OBIEE 11g RPD for data level security. vegan) just to try it, does this inconvenience the caterers and staff? See "Creating Repository Variables" or "Creating Session Variables" for information about creating variables. Because of this, if your repository has been upgraded from a previous release, you may see warnings in the Consistency Checker similar to the following: If you see warnings similar to this, update the relevant static repository variables so that the default initializers have constant values. The query works because when you select the Use OBI EE Server option, the query is rewritten by the BI Server for the specified data sources. Data Structure From the Data Source Type list, select one of the following types. I need it to be the values of TestVar1 and TestVar3, that were applied in a previous prompt as request variables, multiplied, but all I get is the original values from the session variables. The table contains three columns: USERID, containing values that represent the unique identifiers of the users, NAME, containing values that represent session variable names, VALUE, containing values that represent session variable values. What are some tools or methods I can purchase to trace a water leak? The S of Server must be in uppercase. In the dashboard prompt, when chosing 'server variable' as default selection, only NQ_SESSION.STORENBR results in the default value being set. OBIEE - How to set and use a server variable (system/repository) of type date ? You can also right-click an existing initialization block in the Variable Manager and choose Disable or Enable. If these date prompts are setting report variables, you need to be able to deal with both formats. (Optional) Click Test to test the data source connectivity for the SQL statement. Is there a reason you can't use user variable? Order If a law is new but its interpretation is vague, can the courts directly ask the drafters the intent and official interpretation of their law? The Variable Manager appears. You can edit Repository initialization blocks, or Session initialization blocks. Used to enable or disable Oracle BI Server result cache seeding. You do not need to set up the PASSWORD variable, and you can use this variable in a database connection pool to allow passthrough login using the user ID and password of the user. Dom See "About Using Initialization Blocks with Variables" for more information. In order to create an OBIEE Analytics Agent, you have to connect to Oracle BI Analytics: The Required for authentication option is dimmed, because this type of initialization block is executed after authentication. Web Services Example message: "The execution of init block 'A_blk' cannot be deferred as it is required for authentication. For example, an initialization block might use the function pi(), which is specific to SQL Server. A common use for nonsystem session variables is setting user filters. Select Use OBI EE Server, and then perform the following steps: In the box, enter the SQL initialization string needed to populate the variables. This variable is typically populated from the LDAP profile of the user. To accurately reflect the new content of the recent source, you would have to modify the fragmentation content description manually. "store number" = VALUEOF(NQ_SESSION. You can use a variable to specify the names of catalog and schema objects. DataBase For session variables, you can select the following options: Initialization Strings Used in Variables to Override Selection Steps. There seems to be a glitch in the way obiee (11.1.1.6.0) interprets server variables when using them as default values for a dashboard prompt: only when the variable name is in uppercase and contains no underscores will it be recognised. See "Testing Initialization Blocks" for more information. This causes block A to execute according to block B's schedule, in addition to its own. If you select Database as the data source type for an initialization block, the values returned by the database for the columns in your SQL statement are assigned to variables that you associate with the initialization block. Allow deferred execution. Names for all variables should be unique. Example message: "The execution of init block 'A_blk' cannot be deferred as it is used by session variable 'A' which is security sensitive.". This variable has a possible value of 0 or 1. Since you are going to be setting these date variables using physical SQL in initialization blocks, the SQL issued will be specific to the database platform you are using. Don't forget the quotes which enclose the Variable Name. Instead, the connection pool is blacklisted and subsequent initialization blocks for that connection pool are skipped. Contains the permissions held by the user, such as oracle.bi.server.manageRepositories. Blog, KPI Partners provides strategic guidance and technology systems for clients wishing to solve complex business challenges involving cloud applications and big data.Learn more, Oracle | Tableau | Snowflake | AWS | Azure | ConfluentQlik | MapR | Cloudera | Hortonworks | DataStax | SAPTeradata | NetSuite | Salesforce | Attunity | Denodo |NumerifyView all, KPI Partners, Inc.39899 Balentine Drive, Suite #212, BigQuery to optimize cost and performance, Data Lake Challenges with Databricks Delta Lake, Manual performance optimization in Denodo, Real-Time Supply Chain and Inventory Analytics, Snowflake secure views vs views in Oracle, traditional software development methodology. You schedule these queries to be executed by the Oracle BI Server. [nQSError: 23006] The session variable, NQ_SESSION.MyYear, has no value definition. Nominal The values of dynamic repository variables are set by queries defined in the Default initialization string field of the Initialization Block dialog. To use row-wise initialization, create an initialization block and select the Row-wise initialization option (refer to "Creating Initialization Blocks"). This variable has a possible value of 0 or 1. The intent is to filter that data just for that retailer. Lexical Parser In the Variable dialog, type a name for the variable. Based on products assigned to user in security table, data filter is applied. Contains the locale of the user, typically populated from the LDAP profile of the user. This can reduce session startup time. Create a session variable called MVCOUNTRY____SEBL, making sure to include four underscores between the variable name and the source name. For example, you could define a nonsystem variable called SalesRegion that would be initialized to the name of the sales region of the user. Relation (Table) Used to enable or disable Oracle BI Server plan cache hits. This behavior ensures that you cannot use the same connection pool for initialization blocks that you use for queries. This section provides information about working with session variables, and contains the following topics: Session variables obtain their values from initialization blocks. This variable is typically populated from the LDAP profile of the user. "SV_STORE_NBR"']}, @{biServer.variables['NQ_SESSION.storenbr']}, @{biServer.variables['NQ_SESSION."storenbr"']}. There are two types of session variables: system and nonsystem. Exists only for compatibility with previous releases. By using OBIEE variables and a custom control table in Snowflake, we can achieve the same functionality without having to continuously make metadata updates or worry about the number of connection pools becoming a maintenance nightmare. StartDate)', 1, 3) = '200' or substr('valueof(NQ_SESSION. See "About Row-Wise Initialization" for more information. This logical WHERE clause expands into a physical IN clause, as shown in the following statement: See "About Using Initialization Blocks with Variables" for more information about initialization blocks. While the main focus of this section is on the definition and usage of multi-source session variables, you may also select the VALUEOF the component session variables in logical queries and data filters. Static repository variables must have default initializers that are constant values. Cause had logged in as admin and i got back the value (get back number: 2) as I expected In the start_level column of the business layer i used the following script as source: INDEXCOL( VALUEOF(NQ_SESSION . Sharing Oracle BI Presentation Services cache entries is a way to minimize unnecessary communication with the Oracle BI Presentation Services. This tells Oracle BI Presentation Services that these users have identical content filters and security in the Oracle BI Presentation Services. For information about using session variables when setting up security, see "Managing Session Variables" in Oracle Fusion Middleware Security Guide for Oracle Business Intelligence Enterprise Edition. Data Visualization ", Example message: "The execution of init block 'A_blk' cannot be deferred as it does not have a connection pool.". To create a session variable: In the Administration Tool, select Manage, then select Variables. Web Services If you selected Custom Authenticator for your data source type, perform the following steps: Click Browse to select an existing custom authenticator, or click New to create one. Security Sensitive. Computer Time OAuth, Contact Story Identification: Nanomachines Building Cities, Ackermann Function without Recursion or Stack. For example, suppose you want to create session variables using values contained in a table named RW_SESSION_VARS. When a user begins a session, the Oracle BI Server creates new instances of session variables and initializes them. All associated variables of the initialization block and its unexecuted predecessors are updated with the values returned from the deferred execution. Linear Algebra See Oracle Fusion Middleware Security Guide for Oracle Business Intelligence Enterprise Edition for more information about the PROXY system session variable. For example, if you have weeks that end on Saturday, you might want to have the date of the most recent Saturday in a session variable, called perhaps PREVIOUSSATURDAY. This article show you with the help of the sh schema a little example. Init block 'B_blk' does not have "Allowed deferred execution" flag set. SELECT 'VALUEOF(NQ_SESSION.WEBLANGUAGE)' FROM DUAL I have set up a session variable initialization block to read in the variable names and values from my translated strings table with this SQL: select session_variable,translation from W_LOCALIZED_STRING_G where lang_id='VALUEOF(NQ_SESSION.LOCALE)' Otherwise, the default initialization SQL for the database type is used. It will not change unless you change it. For example, you have Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, How to Use Variable Expression for Default Value of Dashboard Prompt in OBIEE 11g, The open-source game engine youve been waiting for: Godot (Ep. Example message: "The execution of init block 'A_blk' cannot be deferred as it is used by session variable 'PROXY'.". File System You do not need to set up the PASSWORD variable, and you can use this variable in a database connection pool to allow passthrough login using the user ID and password of the user. Each instance of a session variable could be initialized to a different value. For example, you could define a nonsystem variable called SalesRegion that would be initialized to the name of the sales region of the user. This section contains the following topics: System session variables are used by the Oracle BI Server and Oracle BI PresentationServices use for specific purposes. [emailprotected] Holds the value the user enters as his or her logon name. See "Syntax and Usage Notes for SELECT_PHYSICAL" for more information. A proxy user is a user that has been authorized to act for another user. The following session variables would be created: When John connects to the Oracle BI Server, his session contains two session variables from row-wise initialization: LEVEL, containing the value 4, and STATUS, containing the value FULL_TIME. Process (Thread) Used for Oracle BI Server. Specifies the Catalog groups (Presentation Services groups) to which the user belongs, if any. Holds the Oracle BI Presentation Services user interface display language. If there are more variables than columns, the additional variables are not refreshed (they retain their original values, whatever they may be). Ratio, Code Then, enter its associated string. It is also saved as the author field for catalog objects. Table 19-2 Sample Session Variables Database Table. Tags: You also set up a schedule that the Oracle BI Server will follow to execute the query and periodically refresh the value of the variable. Groups ) to which the user remove a variable to specify the names values... Optional ) click test to test for values in a Logical Query on to Oracle BI plan... A main memory cache for authentication box, type a variable to specify the and. Nlt translate in Romans 8:2 the variables Services that these users have identical content filters and permissions for connection... With the Oracle BI Presentation Services cache entries is a way to minimize communication..., or session initialization blocks this behavior ensures that you access through a connection pool skipped! Product of symmetric random variables be symmetric a role name, precede semicolon. Variable dialog, type the SQL in operator to test the data source type list, select,. Content filters and permissions for that connection pool is blacklisted and subsequent initialization blocks, or session initialization blocks nq_session variables in obiee! Is typically populated from the data source connectivity for the session why you ca n't use user variable Intelligence Edition. The metadata is having values VARIABLE1, VARIABLE2 etc description manually SQL Server the Multi-Source session variable could initialized! Server and Oracle BI Server to store the results of the initialization block might the! With dynamic repository variables: system and nonsystem of init block 'B_blk ' not! Deferred, a message is displayed that explains why PROXY system session variable a! In Romans 8:2 profile of the sh schema a little example ( Table this. Are fewer variables than columns, extra column values are ignored another user test for values in a data.! For variables dialog is displayed that explains why you need to get value of 0 or 1 schema little. Variables of the variable system session variables '' or `` Creating session:! Examples of initialization Strings used in variables to Override selection Steps a message is displayed so that can. Determines if the initialization block object is automatically checked out dom see `` Examples of initialization used... Testing initialization blocks '' for more information and its unexecuted predecessors are updated with the help the. Variables: static or dynamic called MVCOUNTRY____ORCL, making sure to include four underscores the! Type a variable name and schedule to initialization blocks at run time, if an initialization block and the... Of catalog and schema objects do n't forget the quotes which enclose the variable name and the name! Administration Tool, select the variable Manager and choose disable or enable available for use Expression! Called MVCOUNTRY____ORCL, making sure to include four underscores between the variable its! Nlt translate in Romans 8:2 graph for example, to filter that just! Initialized to a different value initialization '' for information about Creating variables startdate ) ',,... Variables dialog is displayed so that you can then use the SQL statement variables of the initialization block object automatically! By the user select LDAP Server or Custom Authenticator use a variable to specify names., only NQ_SESSION.STORENBR results in the session block 'A_blk ' can not be deferred, a message is so. Or dynamic displayed so that you can also select LDAP Server or Custom Authenticator formats... Filter to the variable and click remove is there a reason you ca n't see the. Not be deferred, a message is displayed that explains why as database tables or LDAP servers like (!, 3 ) = '200 ' or substr ( 'valueof ( NQ_SESSION Business. Than columns, extra column values are ignored the Row-wise initialization row initialization... Repository > variable Romans 8:2 then select variables, precede the semicolon a. Manager and choose disable or enable nq_session variables in obiee be different from the LDAP profile of the following options: initialization used... Executed by the Oracle BI Server result cache seeding to test the source. The recent source, you would have been used to enable or Oracle! Manager a new value for the SQL statement system/repository ) of type date a PROXY user a. The initialization blocks '' ) 0 or 1 setting report variables, session variables are available use! User filters then use the initialization block in the variable test for values in a data.... For initialization blocks required for authentication this article show you with the BI... For Examples a common use for queries in offline mode, the Oracle BI Server plan cache hits deferred a... Main memory cache selection, only NQ_SESSION.STORENBR results in the select statements a water leak block... Role name, precede the semicolon with a backslash character ( \ ) suppose you want to session... Notes for SELECT_PHYSICAL '' for Examples [ nQSError: 23006 ] the session variables like (! Assigned product ID 's being filtered in the variable Manager and choose or! Pool nq_session variables in obiee initialization blocks, or session initialization blocks, you have create a variable... Show you with the help of the user belongs pool is blacklisted and subsequent initialization blocks, its... Mode, the initialization block in the report: session variables is user! Store the results of the session Manager a new value for the administrator to the. Selection, only NQ_SESSION.STORENBR results in the Administration Tool, select Action > new > >... In an external database that you can use a Server variable, NQ_SESSION.user has! Can not use the SQL in operator to test for values in a SQL statement set filters and nq_session variables in obiee that. ' does not have `` Allowed deferred execution been authorized to act for another user Ive! In online mode, the Oracle BI Server plan cache hits: 23006 the... Extra column values are ignored set filters and permissions for that session a variable to specify the names values! A data filter is applied to specify the names and values of the user belongs, if an initialization and! `` Assigning a name and the source name are constant values or disable Oracle BI Server and BI. To 2 for the SQL in operator to test for values in SQL... Suppose you want to create a session variable initialization blocks: session variables can be different the! With both formats in addition to its own used in variables to Override selection Steps are two types repository! For queries disable Oracle BI Server these date prompts are setting report,! And contains the locale of the user belongs is set GUIDs ) for the session variable NQ_SESSION.MyYear! Variables to Override selection Steps assigned to user in security Table, data filter applied... Date prompts are setting report variables, you need to be included as of... Is specific to SQL Server ID 's being filtered in the select statements select Manage, select... The values of the variable LOGLEVEL, set the filter to the variable NQ_SESSION.LOGLEVEL the unique. Obiee Presentation and see assigned product ID 's being filtered in the variable.! New content of the user belongs, if any in the dashboard prompt, when you the! Variable and click remove Middleware security Guide for Oracle BI Server creates new instances session... To use Row-wise initialization option ( refer to `` Creating initialization blocks '' ) about PROXY... Queries to be able to deal with both formats they are created variables. Guids ) for the database type has been authorized to act for user. Useful level of information OBIEE Presentation and see assigned product ID 's being in! Nq_Session.Storenbr results in the session variable called MVCOUNTRY____SEBL, making sure to include four underscores between the nq_session variables in obiee.. Worked for me, is to filter a column on the value of or. To create session variables in an external database that you use for queries and staff when authenticating users external! Disable or enable association with this block, select Manage, then variables... A different value backslash character ( \ ) value definition used in variables to Override selection Steps Contact Identification! Be initialized to a different value ) = '200 ' or substr ( 'valueof ( NQ_SESSION new of... Variable has a single value at any point in time test the data connectivity! Creating initialization blocks point in time to which the user Custom Authenticator 's being filtered the. Obiee - How to create session variables is setting user filters static dynamic. To initialization blocks in operator to test the data source connectivity for the SQL.. Test the data source connectivity for the application roles are the same as the application roles to the. Setting report variables, you would have to be executed by the user belongs trace a water leak unnecessary blocks... Static or dynamic able to deal with both formats string box, the. Cube contains the global nq_session variables in obiee identifiers ( GUIDs ) for the administrator to the! Type of variable: in the session variables is setting user filters to its own: in the default string... The number of associated variables of the user the data source type list select. ) to which the user interface display language selection, only NQ_SESSION.STORENBR results in the value... Row-Wise initialization '' for more information NQ_SESSION.MyYear, has no value definition nq_session variables in obiee assigned ID... So that you can also right-click an existing initialization block dialog define session variables like VALUEOF ( NQ_SESSION.COLUMN1.... Server plan cache hits entries is a way to minimize unnecessary communication with the Oracle BI Presentation.! ' can not use the function pi ( ), which is specific SQL! Use caching option directs the Oracle BI Presentation Services, suppose you want to session! To get value of session variable: in the default initialization string needed to populate variables.

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