What is the advantage of persistent cache? When it should be used.



What is the advantage of persistent cache? When it should be used...

Answer / ramu

persistent cache is used when u r mapping contains multiple dimensions table, which is used in several times. if you use persistence cache all the index files and data files are stored in memory. when the integration serviece second time calls the same lookup table it wioll fetch the data from the memory cache files instead of re-creating the index and data cache files. we can use the same cache by using one name prefix of the lookup properties.
to use use persistence cache we can divide them in to two types.
1) names persistence cache
2) un named persistence cache.

1) named persistence cache: we can use the same persistence cache between several mappings.
2)un named persistence cache we can use the same cache with in the mapping only.

Is This Answer Correct ?    4 Yes 0 No

Post New Answer

More Informatica Interview Questions

How u use pdf file in informatica source?

2 Answers   Ericsson, HP, IBM,


Howmany ways yoU can update a relational source defintion and what are they?

1 Answers  


explain abt joiner t/r?

1 Answers   IBM,


how to get the first row without using rank t/r?

7 Answers   iGate,


What is a design?

1 Answers  






I HAVE A SOURCE FILE CONTAINING 1|A,1|B,1|C,1|D,2|A,2|B,3|A,3|B AND IN TARGET I SHOULD GET LIKE 1|A+B+C+D 2|A+B 3|A+B WHICH TRANSFORMATION I SHOULD USE

5 Answers   Informatica,


followin source like region sales 1 100 2 200 i want the output following format region 1 2 sales 100 200

2 Answers   Oracle,


During the running session, output files are created by informatica server. Enlist few of them.

0 Answers  


If we set dd_insert in mapping and Delete in session properties what will happen.?

4 Answers   IBM,


How the Informatica Server reads perameter file?

1 Answers  


Can one use mapping parameter or variables created in one mapping into any other reusable transformation?

0 Answers  


suppose a session is failed after a transformation , from where that session will run again , i.e . from beginning or from that transformation ?

3 Answers   TCS,


Categories