CoolInterview.com - World's Largest Collection of Interview Questions & Answers, FAQs, queries, sample papers, exam papers, dumps, what, why, how, where, when questions OneStopTesting.com - Testing EBooks, Tutorials, Articles, Jobs, Training Institutes etc.
OneStopGate.com - Gate EBooks, Tutorials, Articles, FAQs, Jobs, Training Institutes etc.
OneStopMBA.com - MBA EBooks, Tutorials, Articles, FAQs, Jobs, Training Institutes etc.
OneStopIAS.com - IAS EBooks, Tutorials, Articles, FAQs, Jobs, Training Institutes etc.
OneStopSAP.com - SAP EBooks, Tutorials, Articles, FAQs, Jobs, Training Institutes etc.
OneStopGRE.com - of GRE EBooks, Tutorials, Articles, FAQs, Jobs, Training Institutes etc.

Sponsored Links

Interview Questions
Our Services



INTERVIEW QUESTIONS DATA WAREHOUSING INFORMATICA DETAILS
Question :

Performance tuning in Informatica?

Category Informatica Interview Questions
Rating (4.4) By 56 users
Added on 10/12/2009
Views 5451
Rate it!


Answers:

Source: CoolInterview.com

The goal of performance tuning is optimize session performance so sessions run during the available load window for the Informatica Server.Increase the session
performance by following.
The performance of the Informatica Server is related to network connections. Data generally moves across a network at less than 1 MB per second, whereas a local disk
moves data five to twenty times faster. Thus network connections ofteny affect on session performance.So aviod netwrok connections.
Flat files: If u?r flat files stored on a machine other than the informatca server, move those files to the machine that consists of informatica server.
Relational datasources: Minimize the connections to sources ,targets and informatica server to
improve session performance.Moving target database into server system may improve session
performance.
Staging areas: If u use staging areas u force informatica server to perform multiple datapasses.
Removing of staging areas may improve session performance.
You can run the multiple informatica servers againist the same repository.Distibuting the session load to multiple informatica servers may improve session performance.
Run the informatica server in ASCII datamovement mode improves the session performance.Because ASCII datamovement mode stores a character value in one
byte.Unicode mode takes 2 bytes to store a character.
If a session joins multiple source tables in one Source Qualifier, optimizing the query may improve performance. Also, single table select statements with an ORDER BY or
GROUP BY clause may benefit from optimization such as adding indexes.
We can improve the session performance by configuring the network packet size,which allows
data to cross the network at one time.To do this go to server manger ,choose server configure database connections.
If u are target consists key constraints and indexes u slow the loading of data.To improve the session performance in this case drop constraints and indexes before u run the
session and rebuild them after completion of session.
Running a parallel sessions by using concurrent batches will also reduce the time of loading the
data.So concurent batches may also increase the session performance.
Partittionig the session improves the session performance by creating multiple connections to sources and targets and loads data in paralel pipe lines.
In some cases if a session contains a aggregator transformation ,You can use incremental aggregation to improve session performance.
Aviod transformation errors to improve the session performance.
If the sessioin containd lookup transformation You can improve the session performance by enabling the look up cache.
If U?r session contains filter transformation ,create that filter transformation nearer to the sources
or You can use filter condition in source qualifier.
Aggreagator,Rank and joiner transformation may oftenly decrease the session performance .Because they must group data before processing it.To improve session
performance in this case use sorted ports option.
Source: CoolInterview.com



Source: CoolInterview.com

Increase the temporary database space also improves the performance.
Source: CoolInterview.com



Posted by: Manoj Kumar Govindan

Contact Manoj Kumar Govindan Contact Manoj Kumar Govindan

If you have the better answer, then send it to us. We will display your answer after the approval.
Rules to Post Answers in CoolInterview.com:-
  • There should not be any Spelling Mistakes.
  • There should not be any Gramatical Errors.
  • Answers must not contain any bad words.
  • Answers should not be the repeat of same answer, already approved.
  • Answer should be complete in itself.
Name :*
Email Id :*
Answer :*
Verification Code Code Image - Please contact webmaster if you have problems seeing this image code Not readable? Load New Code
Process Verification Enter the above shown code: *
Inform me about updated answers to this question

Related Questions
View Answer

Please Note: We keep on updating better answers to this site. In case you are looking for Jobs, Pls Click Here Vyoms.com - Best Freshers & Experienced Jobs Website.

View ALL Informatica Interview Questions & Answers



User Options
India News Network

Latest 20 Questions
What is Corporate Tax Planning?
What are the Corporate Tax rebates applicable in India?
What is Corporate Tax Rate for Foreign Companies in India?
What is Corporate Tax Rate for Domestic Companies in India?
What is meant by Income of a Company?
What is meant by a Corporate?
How Corporate Tax is levied in India?
What are various categories of Corporate Taxes?
What is Corporate Tax?
What is the scope of Securities Transaction Tax (STT)?
What is meant by Securities, in case of Securities Transaction Tax (STT)?
What are taxable transactions in case of Securities Transaction Tax (STT)?
Give an example of Securities Transaction Tax (STT)?
When is Securities Transaction Tax levied?
What is the difference between Securities Transaction Tax (STT) and Income Tax?
What are the securities on which STT is applicable?
What is the Securities Transaction Tax (STT) Rate in India?
What are the main features of Securities Transaction Tax (STT)?
What is Securities Transaction Tax, STT?
What is the rate of Securities Transaction Tax (STT)?



Fresher Jobs | Experienced Jobs | Government Jobs | Walkin Jobs | Company Profiles | Interview Questions | Placement Papers | Companies In India | Consultants In India | Colleges In India | Exams In India | Latest Results | Notifications In India | Call Centers In India | Training Institutes In India | Job Communities In India | Courses In India | Jobs by Keyskills | Jobs by Functional Areas

Testing Articles | Testing Books | Testing Certifications | Testing FAQs | Testing Downloads | Testing Interview Questions | Testing Jobs | Testing Training Institutes

Gate Articles | Gate Books | Gate Colleges | Gate Downloads | Gate Faqs | Gate Jobs | Gate News | Gate Sample Papers | Gate Training Institutes

MBA Articles | MBA Books | MBA Case Studies | MBA Business Schools | MBA Current Affairs | MBA Downloads | MBA Events | MBA Notifications | MBA FAQs | MBA Jobs
MBA Job Consultants | MBA News | MBA Results | MBA Courses | MBA Sample Papers | MBA Interview Questions | MBA Training Institutes

GRE Articles | GRE Books | GRE Colleges | GRE Downloads | GRE Events | GRE FAQs | GRE News | GRE Training Institutes | GRE Sample Papers

IAS Articles | IAS Books | IAS Current Affairs | IAS Downloads | IAS Events | IAS FAQs | IAS News | IAS Notifications | IAS UPSC Jobs | IAS Previous Question Papers
IAS Results | IAS Sample Papers | IAS Interview Questions | IAS Training Institutes | IAS Toppers Interview

SAP Articles | SAP Books | SAP Certifications | SAP Companies | SAP Study Materials | SAP Events | SAP FAQs | SAP Jobs | SAP Job Consultants
SAP Links | SAP News | SAP Sample Papers | SAP Interview Questions | SAP Training Institutes |




Copyright ©2003-2016 CoolInterview.com, All Rights Reserved.
Privacy Policy | Terms and Conditions



Cache = 0.003906 Seconds