Interested to Buy Any Domain ? << Click Here >> for more details...
In ur current projectu have done any performance tuning of
mappings?
- 1 Answers
- 4635 Views
- I also Faced
- E-Mail Answers
Answer Posted / sreedhar lokaray
Many people are not sure how exactly to tune the
performance of a mapping. There is no thumb rule for
performance tuning. A tuning done in one mapping cannot be
applied into another mapping. But still below given are
some of the performance tuning tips.
Joiner instead of Lookup: If the lookup table has large no.
of records then the performance will affect because it has
to build the cache. Instead use a joiner transformation and
check it as detail rows. This will avoid building cache.
Sorted Input: Use sorter transformation before joiner or
aggregator. This will improve the performance.
Source Qualifier: Try to filter out unwanted records in the
source qualifier before moving to the next transformation.
Also delete unconnected/unused ports.
Indexes: Try to have proper indexes on the required fields
of the tables in the database which will increase the
performance. At the same time having indexes on the target
will kill the performance when you try to insert huge
volumes of data. To avoid this, disable the indexes on the
target (using sql loader direct load process) and then load
the data. After loading enable the index back.
Keep in mind that tuning performance of one transformation
can kill the performance of other transformation. We have
to maintain the equilibrium.
| Is This Answer Correct ? | 8 Yes | 0 No |
Post New Answer View All Answers
What is the different lookup cache(s)?
What is powercenter on grid?
Design time, run time. If you don't create parameter what will happen
What is data transformation manager process?
Is it possible to define a single node as a Gateway node as well as worker node?
Can u generate reports in Informatica?
Enlist the various types of transformations.
Please let me know how to make Data masking in informatica..
Why is sorter an active transformation?
What is the sequence generator transformation in informatica?
On which transformations you created partitions in your project?
How might one distinguish in the case of mapping is right or not without associating session?
COL1,COL2 ABC,1 XYZ,2 HERE IN COL2 VALUES 1,2 NOT STSANDARD(IE MEANS NOT FIXED VALUES LIKE OTHER SOME VALUES LIKE 10,20) O/P IS COL1,COL2 ABC,2 XYZ,1
Explain pushdown optimization and types in informatica
What are the components of Informatica? And what is the purpose of each?
