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 Abinitio  |  Question 93 of 193    Print  
difference between conventional loading and direct loading ? when it is used in real time .

  
Total Answers and Comments: 2 Last Update: September 22, 2006     Asked by: difference between conventional loading and direct loading 
  
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May 12, 2006 15:39:23   #1  
Sunitha        

RE: difference between conventional loading and direct...

Conventional Load: 
Before loading the data, all the Table constraints will be checked against the data. 
 
Direct load:(Faster Loading) 
All the Constraints will be disabled. Data will be loaded directly.Later the data will be checked against the table constraints and the bad data won't be indexed.

Api conventional loading

utility direct loading.


 
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September 22, 2006 17:50:17   #2  
dontbuckme Member Since: September 2006   Contribution: 8    

RE: difference between conventional loading and direct...

Mis-conception!

Utility Mode can be either Direct or Conventional.

This question is basically an Oracle question, details please refer to the Oracle sqlldr references.

Conventional Load:  same as doing "INSERT INTO" statement.  Data will go thru the SQL area, all database/table triggers will be fired, all table constraints will be checked.  Indexes will be maintained online.

Direct Load: data directly written to the data blocks, no use of buffer cache, can load to a specific table partition, some constraints are checked, index "might" be disabled (depends on the layout), need to specify native options for "skip index maintenances".


 
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