performance tuning of Informatica
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()
| Is This Answer Correct ? | 1 Yes | 1 No |
hi,there is a scenario like. there are three columns empid,salmonth, sal contains the values 101,jan,1000 101 feb 1000 like twelve rows are there then my required out put is like contains 13 columns empid jan feb marc.......dec and the velues are 101 1000 1000 1000 like this . thank you
can we create index and drop index in exsisting table while using infomatica
I have one source table and three target tables. When the session runs for the first time involving the mapping,i want that the loading should take place in 1st Target table only. The 2nd time the same session runs the loading should take place in 2nd Target only only and similarly when the session runs for the 3rd time loading should take place in Third only. And again when the session runs for the 4th time loading should take place in 1st Target table.
what is the difference between repository & Intergration service
Filter condition at workflow level & filter condition at mapping level . Which will get preference or which will work.
If there are more than one sessions running parallel in a worklet, which will be the last session ?
After a load is done to my target table, I need to insert a last row, which might be formed at some expression transformation and brought to target. Do I have to have separate mapping to be run after the 1st mapping? Or in a single mapping how to achieve this?
i have 2 mapings for this 2 mapings i want use only one lookupt/r how?
What is confirmed dimension and fact?
I want load the data into target with out 1st and last record.
Hi, There is a session in my workflow which is running for a long time, atlast we found the cause is the missing index. My session is running via a stored procedure. Can I create an Index on the table which the stored procedure is using while my session is running? Please suggest. My Informatica version is PC 8.0.6 My Oracle APPS is 11.5.3. Thanks,
have you developed documents in your project? and what documents we develop in realtime?