SAP BW Important Interview Questions Paper- Part - 6


Q) WHAT ARE THE DIFFERENT VARIABLES USED IN BEX?Different Variable's are Texts, Formulas, Hierarchies, Hierarchy nodes & Characteristic values.

Variable Types are
Manual entry /default value
Replacement path
SAP exit
Customer exit
Authorization

Q) HOW MANY LEVELS YOU CAN GO IN REPORTING?You can drill down to any level by using Navigational attributes and jump targets.

Q) WHAT ARE INDEXES?Indexes are data base indexes, which help in retrieving data fastly.

Q) DIFFERENCE BETWEEN 2.1 AND 3.X VERSIONS.

Help! Refer documentation

Q) IS IT NESSESARY TO INITIALIZE EACH TIME THE DELTA UPDATE IS USED?

No

.Q) WHAT IS THE SIGNIFICANCE OF KPI'S?

KPI's indicate the performance of a company. These are key figures

Q) AFTER THE DATA EXTRACTION WHAT IS THE IMAGE POSITION.

After image (correct me if I am wrong)

Q) REPORTING AND RESTRICTIONS.

Help! Refer documentation.

Q) TOOLS USED FOR PERFORMANCE TUNING.

ST22, Number ranges, delete indexes before load. Etc

Q) PROCESS CHAINS: IF U has USED IT THEN HOW WILL U SCHEDULING DATA DAILY.

There should be some tool to run the job daily (SM37 jobs)

Q) AUTHORIZATIONS.

Profile generator

Q) WEB REPORTING.
What are you expecting??

Q) CAN CHARECTERSTIC INFOOBJECT CAN BE INFOPROVIDER.

Of course

Q) PROCEDURES OF REPORTING ON MULTICUBES

Refer help. What are you expecting? MultiCube works on Union condition

Q) EXPLAIN TRANPSORTATION OF OBJECTS?

Dev---Ã Q and Dev-------Ã P

Q) What types of partitioning are there for BW?

There are two Partitioning Performance aspects for BW (Cube & PSA)
Query Data Retrieval Performance Improvement:
Partitioning by (say) Date Range improves data retrieval by making best use of database [data range] execution plans and indexes (of say Oracle database engine).
B) Transactional Load Partitioning Improvement:
Partitioning based on expected load volumes and data element sizes. Improves data loading into PSA and Cubes by infopackages (Eg. without timeouts).

Q) How can I compare data in R/3 with data in a BW Cube after the daily delta loads? Are there any standard procedures for checking them or matching the number of records?

A) You can go to R/3 TCode RSA3 and run the extractor. It will give you the number of records extracted. Then go to BW Monitor to check the number of records in the PSA and check to see if it is the same & also in the monitor header tab.
A) RSA3 is a simple extractor checker program that allows you to rule out extracts problems in R/3. It is simple to use, but only really tells you if the extractor works. Since records that get updated into Cubes/ODS structures are controlled by Update Rules, you will not be able to determine what is in the Cube compared to what is in the R/3 environment. You will need to compare records on a 1:1 basis against records in R/3 transactions for the functional area in question. I would recommend enlisting the help of the end user community to assist since they presumably know the data.

To use RSA3, go to it and enter the extractor ex: 2LIS_02_HDR. Click execute and you will see the record count, you can also go to display that data. You are not modifying anything so what you do in RSA3 has no effect on data quality afterwards. However, it will not tell you how many records should be expected in BW for a given load. You have that information in the monitor RSMO during and after data loads. From RSMO for a given load you can determine how many records were passed through the transfer rules from R/3, how many targets were updated, and how many records passed through the Update Rules. It also gives you error messages from the PSA.


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