OBIEE Interview Questions and Answers for Developers on 11G Reports _ OBIEE Interview Questions of...

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3/2/2016 OBIEE Inter vi ew Ques ti ons and Ans wer s for D ev el oper s on 11G R epor ts | OBIEE Inter vi ew Ques ti ons of 2015

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OBIEE Comprises Presentation

Services,Oracle BI Server:

The user constructs sql and passes it to

the Anal tic En ine and then the Oracle

1. Explain the Architecture of OBIEE11g and function of each components?

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BI (Analytic Engine) describes the

physical sql to the Datasources and

recover the data back to the Engine and

presents to the presentation Services .

There are many ways to extract the sql:

a. Change the request and click

Advanced in that you get xml code and

also the actual sql.

b. In the catalog Manager click Tools-

Create Report . In the Create Report

Window –> Click Request SQL and save

the sql to the physical path in your PC.

c. Enable Loglevel to 2 in the OBIEE 11g

Administration Tool from Manage->

Security and enable the log level to 2 by

clicking properties for the user, then go

to the NQQuery.log in

BI_HOME/OracleBI/Server/Logs.You will

find the SQL for that User.

d. By clcking Administration->Manage

sessions-> view sql.

Click on modify and then click on sort

2. How we can extract sql fromOBIEE for reports?

3.How can you sort in Reports in OBIEE

11g?

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or er y con on t e re evant co umn

in the criteria pane.

By clicking modify request and NarrativeView and by giving @1 for the first

column result and @2 for the 2nd

column and so on and we can also give

a heading for No Results by clicking the

Narrative view.

By clicking on Administration and

Manage dashboards and by adding

column selector we can create

interactive Dashboard.

We can give a column as updatable and

then view the reports,this option is

called write back option.

By clicking Direct Database Request

4.How we can do different types of

narrative Reports in OBIEE?

5.How will you create Interactive

Dashboards ?

6.What is write-back in obiee ?

7.How will you execute Direct SQL in

OBIEE?

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execute Direct SQL in OBIEE.

From the Criteria Pane of the ReportCreated from First Subject Area

come to the bottom of the page and

click combine request. By this we can

create report from two subject areas.

For the RPD we can use the Merge

option in Admin Tool and for

dashboards and reports we can use

Content Accelerator Framework.

There are two types of variables in

OBIEE 11g.a. Repository variable:

This variable is used for the whole

repository.

b. Session variable:

session variable are of two types:

8.How OBIEE Developer can create

report from two subject areas?

9.How we can Port changes for

dashboards, reports, rpd from

development to production?

10.What are the different types of

variables in OBIEE 11g? explain

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sys em var a e an non sys em

variable.

System variable uses NQ_SESSION.

Examples of non system variables are

user defined filters.

In the NQSConfig.ini file use ENABLE

under CACHE Section for System Level

For tables, if we want to enable the

cache at table level , open the repository

in offline mode This should be different

from the current repository and clickenable or disable the cache .

Check if the table is already existing if so

add in physical layer ,then click on BMM

and then Presentation layer, then reload

server metadata ,then it will be visible to

all users.

11.How will you enable or disable

caching in the system level and table

level?

12.How will you go about adding

additional column to the repository in

the presentation layer?

13.How will effect the changes for a

report , if for certain users only the

column heading in the report should


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Using session variables for that user.

Table alias is used for creating self joins.

Table alias can be created by right

clicking the table in the physical layer

then click alias.

Yes, we can create hierarchy in BMMLayer of OBIEE in dimensions for the

dimension tables. This can be done by

right clicking the dimension table and

click create dimension and then we can

manually define the hierarchy and its

levels.

Level-base metrics means, having a

measure held at a certain level of the

dimension. Examples Monthly Total

Sales or Quarterly Sales

To create a level based measure, create

be changed?

14.What is a table alias in OBIEE 11g?

Where and how will you create it?

15.Have you created Hierarchy in

OBIEE 11g. if so where and how?

16.What is Level Based Metrics? How

we can create it?


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a new logical column based on the

original measure .Drag and drop the

new logical column to the appropriate

level in the Dimension hierarchy.

• Physical Layer,

• Business Model

• Mapping Layer

• Presentation Layer.

Authentication is the procedure by

which a system confirms, through the

use of a user

a. Operaing system authentication

b. External table authentication

c. Database authentication

d. LDAP authentication

If we want to connect two tables where

there is no relationship we can use a

thrid bridge table for connecting them

which will have same columns in both

tables.

17.What are the different layers of

OBIEE 11g Repository?

18.What is Authentication? How many

types of authentication.

19.What is a bridge table ?


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Using Scheduler – ibots we can generate

time based triggered report.

Ibot is an arrangement agent, used to

arrange reports to be sent across many

devices such as email, pager, mobile,

other devices etc

1. Complex Join –it uses multiple

conditions, such as A.ROW_WID =

B.ROW_WID AND / OR A.A_WID =

B.B_WID

2. Natural Join

Using confirmed dimensions,we can

fetch many metrics across various facts,

but the join should be of same level of

data detail.

20.How Time based triggered report

can be generated?

21.What is ibot?

22.What are different types of joins

that are possible in OBIEE RPD?

23.How we can have two different

columns from two different tables or

subject areas?


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Shared Folders-XYZ Folder- It have two

folders

a. Promptsb. Reports

By clicking on the cancel button, we can

stop a exact report placed on thedashboard.

A surrogate key is an artificially

generated key, usually a number. A

surrogate key, in the level aggregate

table, simplifies this join and removes

unnecessary columns from the fact

table, resulting in a smaller-sized facttable.

24.How can we use saved filters and

where we will save the filters?

25.Have you worked in dashboard?

when we run a dashboard? how will

we stop the dashboard report run

automatically?

26.Define surrogate key.

27.Define repository in terms of Siebel

Analytics.


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. epos ory s ores e e a a a

information. Siebel repository is a file

system ,extension of the repository file.

rpd.

META DATA REPOSITORY

2.With Siebel Analytics Server, all the

rules needed for security, data

modeling, aggregate navigation, caching,

and connectivity is stored in metadata

repositories.

3.Every metadata repository can store

many business models. Siebel Analytics

Server can access many repositories.

Siebel Analytics life cycle

1. Collect Business Requirements

2. Recognize source systems

3. Plan ETL to load to a DW if source

data doesn’t exist.

4. Build a repository

5. Build dashboard or use answers for

reporting.

6. Define security

7. Based on performance, decide an

aggregations and/or caching

mechanism.

8. Testing and QA.

28.Explain the end to end life cycle of

Siebel Analytics?


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There are five parts of Siebel

Architecture.

1. Clients

2. data sorces

3. Siebel analytics Web Server data

sorces

4. Siebel analytics scheduler

5. Siebel analytics server

o Metadata represents the analytical

Model which is created using the siebel

Analytics Administration tool.

o Repository divided into three layer

1. Physical – Signifies the data Sources

2. Business – copies the Data sources

into Facts And Dimension

3. Presentation – Specifies the users

view of the model ; rendered in Siebel

answer.

In the BMM layer,we can create one

logical table (fact) and add the 3 fact

table as logical table source.

29.How does Siebel Architecture

works? Explain the three layers.

30.If we have 3 facts and 4 dimension

and we need to join would you

recommend joining fact with fact? If no than what is the option?


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: connection pool is needed for each and

every physical database.o It contains material about the

connection to the database, not the

database itself.

o We can use either shared user

accounts or pass-through accounts -

Use: USER and PASSWORD for pass

through .

o We can have many connection pools

for each group to avoid waiting

Java Development Kit (JDK), is a software

package that contains the minimal set of

tools needed to write, compile, debug,

and run Java applets.

An opaque view is a physical layer table

that contain select statement. An

31.What is connection pool and how

many connection pools did we have in

our last project?

32.Define JDK and why do we need it?

33.Oracle doesn’t recommend Opaque

Views because of performance

considerations, so why/when do we

use them?


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opaque v ew s ou e use on y

there is no other option.

No we cant migrate the presentationlayer to a different server rather we

have to migrate the whole web & rpd

files

Dimension tables contain descriptions

about data analysts which is used as

query in the database. Every table

contains a primary key that contains one

or more columns; each row in a table is

uniquely identified by its primary-key

value or values

To improve the performance and query

response time we have multiple LTS in

BMM.

34.Can we migrate the presentation

layer to a different server.

35.How we can identify the dimension

tables and how we can decide them

during the Business/Data modeling?

36.Why do we have multiple LTS in

BMM layer?What is the purpose?

37.What is the full form of rpd?


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There is no full form for rpd as such, it is

just a repository file which is known as

Rapidfile Database.

We can disable cache in the physical

layer, by right clicking on the table there

we can have the option which define

cacheable

We have to make a dubbed table in the

physical layer.

TCP/IP type protocol.

Yes, we can have multiple data sources

in Siebel Anal tics.

38.How we can disable cache for only

2 particular tables?

39.How we can split a table in the rpd

given the condition. ( the condition

given was Broker and customer in thesame table) Split Broker and

customer.

40.What type of protocol did we use in

SAS?

41.Can we have multiple data sources

in Siebel Analytics?


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By using expression builder we cancreate case statement when…then.. end

.

o Init blocks are used for instantiating a

session when a user logs in.

o To make dynamic variable we have to

create IB to write sql statement.

o It is utility of OBIEE /Seibel Admin tool

o allows us to examine the repository

metadata tool

o It Examine relationship between

metadata objects like which column in

the presentation layer maps to whichtable in physical layer

o for example: search for objects based

on name,type.

42.How we can deal with case

statement and expressions in siebel

analytics?

43.What do you know about

Initialization Blocks?

44.Explain query repository tool?

45.How can you bypass siebel


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It can by-passed by setting

authententication type in NQSCONFIG

file in the security section

as:authentication_type=bypass_nqs.instan

and nqsconfig.ini are the 2 places

We can add groups by going to

manage>security>add new groups> We

can give permissions to a group for

query limitation and filter conditions.

We can do Aggrigation navigation ,level

base matrics, time series wizard, create

new logical column, comlex join.

Passwords for userid are in siebel

analytics server repository .

Pipelines are the stages in a particular

contract, valuation, economics etc.

46.Where we can add new groups and

set permissions? Explain what is R?

47.What are the things we can do in

the BMM layer?

48.Where are passwords for userid?

49.Define pipeline.


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The key configuration files in OBIEE 11g

are NQSConfig.ini, NQSCluster.ini,

odbc.ini, instanceconfig.xml

Oracle BI Enterprise Edition (sometimes

simply referred to as Oracle Business

Intelligence) provides a full range of

business intelligence capabilities that

allow you to:

• Collect up-to-date data from yourorganization

• Present the data in easy-to-understand

formats (such as tables and graphs)

• Deliver data in a timely fashion to the

employees in your organization

The Oracle BI Presentation Catalog

stores the objects, such as analyses,

dashboards, and KPIs, that you and

other users create using Oracle BI EE.

Users have their own personal folder

(My Folders), where they can store the

50.What are the Key Configuration

Files in OBIEE?

51. Give a brief introduction of OBIEE?

52. What Is the Oracle BI Presentation

Catalog?


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objects that they create. The objects in a

personal folder can be accessed only by

the user who created and saved the

content into that folder. Users can add

sub-folders to their personal folders to

organize their content in the way that isthe most logical to them.

You can also store objects in shared

folders where other users or groups can

access the objects. A combination of

business logic security,catalog object

security, and data level security

determines who has the ability to view

data and objects, edit objects, and

delete objects from the catalog. Your

administrator creates and maintains the

catalog’s shared folder structure.

Oracle Business Intelligence Enterprise

Edition (OBIEE) 11g is the most

significant release of OBIEE since 2006.

Oracle Business Intelligence is now

more integrate with the Oracle Fusion

Middleware software family.

53. What is OBIEE 11G?

54. Explain the main features of OBIEE11G?


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Application Server and Oracle

Containers for Java (OC4J).

Oracle Business Intelligence 11g

Installer replaces the installer that was

used in previous versions of Oracle

Business Intelligence. It can performsoftware installation and configuration

steps in the same process or separately

in their own processes

This release add the following

administration command-line utilities:

Oracle WebLogic Server scripting tool

(WLST) for managing the Oracle

WebLogic Server domain.

OPMN and the opmnctl commands forthe Oracle Process Manager and

Notification Server.

A database repository must be created

before installation of the components

with the Repository Creation Utility

(RCU) tool

Log centralization via the web log viewer

In addition, Oracle Business Intelligence

is now deployed in a clustered

configuration by default. Because of

this, the default ODBC DSN for the

Oracle BI Server points to the Cluster

Controller by default, rather than to the

Oracle BI Server


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An Oracle BI application consists of pre-

built, industry-specific Oracl e BI

interactive dashboards and Oracle BIreports that are built using industry best

practices and address key functional

areas within an organization. Oracle BI

applications are integrated with

operational applications to provide

business metrics in reports, in context

with an organization’s business function

and industry.

Oracle BI applications include Extract

Transform Load (ETL) routines to

extract, transform, and load data into

the Oracle Business Analytics

Warehouse.

• Security in Oracle BI:

OBIEE allows a high degree of control

over access to elements in Oracle BI

applications. The security mechanism

comprises Business logic object security,

Presentation Catalog object security andData level security.

• Drilling Down in Oracle BI:

In OBIEE, you can drill down from a

dashboard or report to an actual item in

the database. For example, if you work

55. Explain Oracle Business

Intelligence Applications?


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in sales, you can drill down to the city

level within a sales report, and observe

that there is a large sale pending in

Paris. If you are using an Oracle Siebel

operational application, you can then

drill down on the pending sale and go

directly to that opportunity in the Oracle

BI application.

Repository stores the Meta data

information.The extension of the

repository file is “.rpd”.With OBIEE

Server, all the rules needed forsecurity,data modeling, aggregate

navigation, caching, and connectivity is

stored in metadata repositories. Each

metadata repository can store multiple

business models. OBIEE Server can

access multiple repositories

Repository is divided into three layer,

• Physical – Represents the data Sources

• Business – model the Data sourcesinto Facts and Dimension and apply

business logic

• Presentation – Specifies the user’s view

of the data rendered in OBIEE answers

client

56. Define repository in terms of

OBIEE?


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OBIEE life cycle:

• Gather Business Requirements

• Identify source systems• Design ETL to load data to the Data

Warehouse

• Build a repository

• Build dashboards and reports

• Define security (LDAP or External table)

• Based on performance, decide on

aggregations and/or caching

mechanism.

• Testing and QA.

An Alias table is a physical table with the

type of Alias. It is a reference to a

physical table, and inherits all its column

definitions and some properties from

the physical table. A logical table source

shows how the logical objects aremapped to the physical layer and can be

mapped to physical tables, stored

procedures and select statements. An

alias table can be a reference to any of

these logical table source types.

57. What is the end to end life cycle of

OBIEE?

58. What is the purpose of Alias

Tables?


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Alias Tables can be an important part of

designing a physical layer. The following

is a list of the main reasons to create an

alias table:

• To reuse an existing table more than

once in your physical layer (without

having to import it several times)

• To set up multiple alias tables, each

with different keys, names, or joins

• To help you design sophisticated star

or snowflake structures in the business

model layer. Alias tables are critical in

the process of converting ER Schems to

Dimensional Sachems.

Authentication is the process by which a

system verifies a user with the help of a

user ID and password. It checks if user

has the necessary permissions and

authorizations to log in and access data.

There are 4 main types of Authentication in OBIEE:

• Operating system authentication

• External table authentication

• Database authentication

• LDAP authentication

59. What is Authentication? How manytypes of authentication do we have in

OBIEE?


24/28



Aggregate tables store pre-computed

results, which are measures that havebeen aggregated (typically summed)

over a set of dimensional attributes.

Using aggregate tables is a very popular

technique for speeding up query

response times in decision support

systems.

Ex: If you observe that most of the

queries are fired on aggregated values

like yearly or monthly data rather that

day level data then to speed up the

report we can create an aggregate table

containing month level and year level

data and map it to the respective logical

table and set the aggregation levels in

the content tab of LTS.

Session variables are similar to dynamic

repository variables in that they obtain

their values from initialization blocks.

Unlike dynamic repository variables,

however, the initialization of session

60. What is aggregate navigation? How

do you configure the Aggregate tables

in OBIEE?

61. Difference between a session and

repo variable?

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variables is not scheduled. When a user

begins a session, the Oracle BI Server

creates new instances of session

variables and initializes them.

A repository variable has a single value

at any point in time. Repository

variables can be used instead of literals

or constants in Expression Builder in the

Administration Tool. The Oracle BI

Server substitutes the value of the

repository variable for the variable itself

in the metadata.

Unlike a repository variable, there are as

many instances of a session variable as

there are active sessions on the Oracle

BI Server. Each instance of a sessionvariable could be initialized to a

different value.

OBIee can be plugged on Relational

Databases, Cubes or Flat files, with the

following constraints :• The sources must be modeled as star

schemas or snowflakes schemas in

order to have an efficient and safe

behavior.

• In case of multiple sources directly in

62. What kind of sources can be

connected to OBIee?

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,

OBIee will conduct the needed joins

itself, and OBIee is not a database.

Rahul says:

DECEMBER 20, 2015 AT 3:47 PM

(HTTPS://INTELLIPAAT.COM/INTERVIEW-

QUESTION/OBIEE-INTERVIEW-

QUESTIONS/#COMMENT-16430)

It is a nice collection of questions. Thanks.

reply


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