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Hi can any one tell me the difference between persistence
and dynamic caches? On which conditions we are using these
caches?
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Dynamic:--
1)When you use a dynamic cache, the Informatica Server
updates the lookup cache as it passes rows to the target.
2)In Dynamic, we can update catch will New data also.
3) Dynamic cache,Not Reusable
(when we need Updated cache data, That only we need Dynamic
Cache)
Persistent:--
1)a Lookup transformation to use a non-persistent or
persistent cache. The PowerCenter Server saves or deletes
lookup cache files after a successful session based on the
Lookup Cache Persistent property.
2) Persistent, we are not able to update the catch with New
data.
3) Persistent catch is Reusable.
(When we need Previous Cache data, That only we need
Persistent Cache)
I think it will help you.
Any,,,??,,,or ,,corrections let me know,,,,,,,
srinu.srinuvas@gmail.com
| Is This Answer Correct ? | 8 Yes | 0 No |
few more additions to the above answer.....
1.Dynamic lookup allows to modify cache where as
persistentlookup does not allow us to modify cache.
2.Dynamic lookup use 'newlookup row', a default port in the
cache but persistent does use any default ports in cache.
3.As session completes dynamic cache removed but the
persistent cache saved in informatica power centre server.
| Is This Answer Correct ? | 8 Yes | 0 No |
Answer / saradhi
Thank u so much srinu ......
Ur answer gaves me one idea..................
| Is This Answer Correct ? | 1 Yes | 4 No |
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There are 2 files, Master and User. We need to compare 2 files and prepare a output log file which lists out missing Rolename for each UserName between Master and User file. Please find the sample data- MASTER.csv ---------- Org|Tmp_UsrID|ShortMark|Rolename ---|---------|----------|------------ AUS|0_ABC_PW |ABC PW |ABC Admin PW AUS|0_ABC_PW |ABC PW |MT Deny all GBR|0_EDT_SEC|CR Edit |Editor GBR|0_EDT_SEC|CR Edit |SEC MT103 GBR|0_EDT_SEC|CR Edit |AB User USER.csv -------- Org|UserName|ShortMark|Rolename ---|--------|---------|------------ AUS|charls |ABC PW |ABC Admin PW AUS|amudha |ABC PW |MT Deny all GBR|sandya |CR Edit |Editor GBR|sandya |CR Edit |SEC MT103 GBR|sandya |CR Edit |AB User GBR|sarkar |CR Edit |Editor GBR|sarkar |CR Edit |SEC MT103 Required Output file: --------------------- Org|Tmp_UsrID|UserName|Rolename |Code ---|---------|--------|------------|-------- AUS|0_ABC_PW |charls |ABC Admin PW|MATCH AUS|0_ABC_PW |charls |MT Deny all |MISSING AUS|0_ABC_PW |amudha |ABC Admin PW|MISSING AUS|0_ABC_PW |amudha |MT Deny all |MATCH GBR|0_EDT_SEC|sandya |Editor |MATCH GBR|0_EDT_SEC|sandya |SEC MT103 |MATCH GBR|0_EDT_SEC|sandya |AB User |MATCH GBR|0_EDT_SEC|sarkar |Editor |MATCH GBR|0_EDT_SEC|sarkar |SEC MT103 |MATCH GBR|0_EDT_SEC|sarkar |AB User |MISSING Both the files are mapped through Organization, Shor_mark. So, based on each Organization, Short_Mark, for each UserName from User.csv, we need to find the Matching and Missing Rolename. I am able to bring Matching records in the output. But really I don't find any concept or logic to achieve "MISSING" records which are present in Master and not in User.csv for each UserName. Please help out guys. Let me know if you need any more information. Note:- In User.csv file, there are n number of Organization, under which n number Shortmark comes which has n number of UserName.
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