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DTM Buffer Size Default Buffer Blocksize
What is DTM buffer size, Default buffer blocksize. If any performance issue happens to session, which one we have to increase and which one we have decrease.


  
Total Answers and Comments: 2 Last Update: January 08, 2009     Asked by: superhero 
  
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December 31, 2008 16:48:35   #1  
calltomadhu Member Since: September 2006   Contribution: 34    
RE: DTM Buffer Size Default Buffer Blocksize
Hey

workflow manage allocate default of 12MB size to session. you can increase this according to you requirement by specifying them in the form of bytes or you can set to AUTO it will take accordingly.

you need to increase the DTM buffer size when you are dealing with large set of character data and you configured it to run on unicode mode. increase the DTM buffer to 24 MB.

i guess i cleared your question..:-)
 
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January 08, 2009 00:58:38   #2  
gaurav2485 Member Since: January 2009   Contribution: 12    
RE: DTM Buffer Size Default Buffer Blocksize
DTM buffer size is memory you allocate to DTM process (12 MB)
Buffer Block size is Size of heaviest Source/Target* number of rows that can be moved at a time(should be minimum 20 (64 KB)
And Informatica bydeault assign it to be as for 83 sources and Targets(Buffer Memory)

So we should increase/decrease size accordingly
if more then 83 sources and Target then we should increase DTM and if source or target are heavy we should go with increasing buffer Block size.
 
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