Answer / kpk

1) Use user defined queries for extracting data from databases.
2) Use native databases stages rather than using ODBC.
3) Use sql join statement rather than using a lookup stage,
if the data is less.
4) Tune the SQL query (the select statement used to extract
the data from source)
5) use less oracle stages, less transformers and lookup
stages, if you have more number of stages, divide the job
into multiple jobs.
6) if ur using server jobs use IPC, Partitioner, collector.
7) if using parallel job then set the environmental variable
APT_DUMP_SCORE to TRUE. this will give a job report that
will show you what are all the operators inserted by
datastage (like sorting, needed or uneeded partition and
collection), so u can manually change the partition methods.
.... most of the performance tunning steps depends on the
job design.

Answer / kiran

1.In drvition ,Instead of calling routines implementing
stage variales.
2.while using ODBC Stag,adjust as per row seetings.
3.using user defined queiries while Extract the date from
sorce.
4.minimize null values
5.minimize unused columns
6.minimize warninigs
7.don't use more than 7 look up in a job,if exceede take
another transformer.
8.don't use morethan 20 stages in a job.
9.before loading data drop indexes after re created indexes.
10.worked with DBA-Admin for
11.tuned in Project tunes in Datastage Admin
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Explain how a source file is populated?

0 Answers  

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Nls stands for what in datastage?

0 Answers  

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Hi am sundar, i have datas like 00023-1010 00086-1010 00184F2-1010 . . . . SCH-AS-1010 200-0196-039 . . . Now i want the result as values before the delimiter should come under the column ITEM_CODE and values after the delimiter should come under the column LOC_CODE.. But some datas like "SCH-AS-1010", for this, "SCHAS" should come under the column ITEM_CODE and 1010 should come under the column LOC_CODE.. Pls help me..

1 Answers  

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If there is a file that contains 1000 records, I need the ouput to contain these 1000 records with the header as file name concatenated with the current timestamp and trailer as the count of records

2 Answers   TCS,

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options available in sequence job to run,validate?

0 Answers   CTS,

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Hi This is Vijay, How can your remove the duplicates in sequential File?

15 Answers   HCL, Scope International,

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Input file one has data as shown below 1 2 3 4 5 6 7 8 Input file two has data like 6 7 8 9 10 11 Design a data stage job which will provide me three output files as shown below: Output 1 6 7 8 Output 2 1 2 3 4 5 Output 3 9 10 11 Let me know your answers

4 Answers   IBM, PR3 Systems,

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if i have two tables table1 table2 1a 1a,b,c,d 1b 2a,b,c,d,e 1c 1d 2a 2b 2c 2d 2e how can i get data as same as in tables? how can i implement scd typ1 and type2 in both server and in parallel? field1 field2 field3 suresh , 10,324 , 355 , 1234 ram , 23,456 , 450 , 456 balu ,40,346,23 , 275, 5678 how to remove the duplicate rows,inthe fields?

0 Answers   IBM,

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Hi all, explain one complex business rule that you had in your project and how did you accomplish it using DS?

1 Answers   HCL,

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Hi, Please tell me how to solve this scenario in datastage ? Here we have 3 columns in a table TEST CODE,ENTRY DATE and BATCH The table looks like CODE ENTRYDATE BATCH 100 100716 1 100 100716 1 100 100716 1 200 122517 2 200 122517 2 302 555555 8 302 555555 8 302 555555 8 We need to create a seqno on grouping these 3 columns. The result should be like this. CODE ENTRYDATE BATCH SEQNO 100 100716 1 1 100 100716 1 2 100 100716 1 3 200 122517 2 1 200 122517 2 2 302 555555 8 1 302 555555 8 2 302 555555 8 3

1 Answers   Alpharithm Technologies,

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what is combinability and non combinability?

2 Answers  

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what is the diff b/w switch and filter stage in datastage

2 Answers   Cap Gemini,

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