Answer / chandumba2005

• Increase performance by indexing the primary key-foreign
keys if the source table has more than 1,000 rows
• Improve session performance by caching small lookup tables
• Use reusable Lookup transformation instead of using same
Lookup Transformation multiple times
• Use source filter in the Properties tab to reduce the
number of rows
• Reduce the number of transformation.
• Delete unnecessary links between transformations to
minimize the amount of data moved, especially in the Source
Qualifier
• Plan for reusable transformations
• Use mapplets to encapsulate multiple reusable transformations.
• Use variable ports to calculate a value that can be used
multiple times
• Numeric operations are faster than string operations
• Operators are faster than function. Example: || is faster
than concat()

what is shared Cache. when we will use shared Cache?

4 Answers  

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What does reusable transformation mean?

0 Answers  

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lookup is passive y can't it be active? let us say i have some records in my source like 101,rohit,1000 101,rohit,1000 102,kumar,2000 like wise now as it is having multiple matches i return only first,last value it can't return bouth the values that means lookup is acting as select distinct right by default what means it is active?

5 Answers   IBM,

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when i try to connect to the repository server i am getting this message can someone help me.. Starting Repository [infa_rep] (6016|1292) Informatica Repository Agent, version [7.1.1], build [0811], 32-bit. (6016|1292) Copyright (c) 2000-2004 Informatica Corporation. All Rights Reserved. This Software is protected by U.S. Patent Numbers 6,208,990; 6,044,374; 6,014,670; 6,032,158; 5,794,246; 6,339,775 and other U.S. Patents Pending. (6016|1292) Informatica Repository Agent starting up. (6016|1292) Security audit trail has been turned off. (6016|1292) infa_rep: Repository runtime manager initialized. (6016|1292) infa_rep: Initialized configuration information. (6016|1292) infa_rep: Initialized request dispatcher. (6016|1292) Database Connection Error : Failed to logon to Database server ORA-12154: TNS:could not resolve service name Database driver error... Function Name : Connect Database Error: Failed to connect to database using user [] and connection string []. (6016|1292) Service stopped.

1 Answers  

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What is A complex mapping?

3 Answers   TCS,

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expain about the tune parameters?

0 Answers   TCS,

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Target is zero file and how can you send the email?

2 Answers   Bank Of America,

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How many ways are there to do 'remove duplicate records in informatica'?

0 Answers  

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How do you load unique records into one target table and duplicate records into a different target table?

0 Answers  

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HOW TO JOIN THE 2 FLAT FILES WITHOUT USING JOINER AND LOOKUP?

11 Answers   Cap Gemini,

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How to improve the performance of Aggregate transformation?

3 Answers   Dmss,

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if we have input eno 1,2,3,1,2,3 year 2001,2002,2003,2001,2002,2003 and sal 10000,20000,30000,20000,30000,40000 ex-output eno totsal 1 30000 2 50000 3 70000

7 Answers  

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