Interested to Buy Any Domain ? << Click Here >> for more details...
generate Unique sequence numbers for each partition in session with Unconnected Lookup ?
Hi All,
Please help me to resolve the below issue while Applying partitioning concept to my Session.
This is a very simple mapping with Source, Lookup , router, and target.
I need to Lookup on the target and compare with the source data, if any piece of data is new then Insert, and If any thing change in the existed data then Update.
while Inserting the new records to the target table I'm generating sequence numbers with Unconnected lookup, by calling the maximum PK ID from the target table.
The above flow is working fine from last one year.
Now I wish to apply the Partitioning concept to the above floe(session)
At source I used 4 pass through partitions.(For Each partition different filter conditions to pull the data from source)
at Target I used 4 passthrough Partitions.
it is working fine for some data, but for some rows for Insert Operation , it is throwing Unique key errors, because while Inserting the data it is generating the same sequence key twice.
In detail : 1st row is coming from 1st partition and generated the sequence number 1 for that row.
2nd row is coming from 1st partition and generated the sequence number 2 for that row
3rd row is coming from the 2nd partition generated the sequence number 2 again for that row. (it must generate 3 for this row)
the issue is becuase of generating the same sequence numbers twice for different partitions.
Can any one Please help me to resolve this issue.
While Applying partitions how can I generate a Unique Sequence numbers from Unconnected lookup for Each partitioned data.
Regrads,
N Kiran.
- 2 Answers
- 6999 Views
- Tech Mahindra, I also Faced
- E-Mail Answers
Answer Posted / sufi
Most simple way to handle this type scenario is use DB Sequence Generator (write Stored Procedure) and Trigger on INSERT on top of it.
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
Hi, I want to do Informatica Designer certification. Can anyone help me by providing the details on this. Thanks in advance. Regards, Arnab
What is sorter transformation?
How to load data in informatica ?
Explain load alternative records / rows into multiple targets - informatica
What is a standalone command task?
Differentiate between router and filter transformation?
Describe data concatenation?
What do you mean by DTM and Load manager and what is difference between load manager and load balancer?
How do you load first and last records into target table?
What is meant by lookup transformation?
Define update strategy?
What is DR strategy for Informatica project?
Which transformation is needed while using the Cobol sources as source definitions?
How do you migrate data from one environment to another?
How many transformations can be used in mapplets.
