Interested to Buy Any Domain ? << Click Here >> for more details...
What is the default execution order of the sequential file?
- 3 Answers
- 13574 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / srinivas
By default it is sequential but we can make it as parallel.
By defying the number of readers per node option.
| Is This Answer Correct ? | 6 Yes | 0 No |
Answer / dipanjan17
The execution mode of Sequential file stage in datastage is
sequential by default.You can validate that from :
Sequential file stage--->Stage tab-->advanced tab ---
>Execution Mode
| Is This Answer Correct ? | 6 Yes | 1 No |
It behaves different w r t reading capability.
i.e.,
when it is reading a single file; it does sequential mode of
reading by default and when it is reading multiple files it
does parallel mode of reading by default.
And if we need to improve performance of sequential file
stage when reading a single large file then we have two
options:
1. Read from Multiple Nodes
2. No of readers per node.
1st one is applicable only when flat file is Fixed length
file and not applicable for delimited formatted files.
The latter one is applicable for delimited files by
mentioning no of nodes then it performs parallel mode of
execution by reading single file in partitions improving the
performance.
Thats it.
| Is This Answer Correct ? | 4 Yes | 0 No |
how to use self join using datastage ? can u tell me using stage how can we implemnet the self join
i have a project manager round on sat this week can you post what are the main question i have to check.if you have any idea regular question on project pls send me. thanks in advance
How will you move hashed file from one location to another location?
Explain the importance of surrogate key in data warehousing?
what is repositery?
Describe stream connector?
What is mapping?
What is a quality stage in datastage tool?
To see hidden files in LINIX?
What are some different alternative commands associated with "dsjob"?
Where the datastage stored his repository?
what is normalization and denormalization
Teradata 
