PPI table and concurrent load to same table


PPI table and concurrent load to same table


For a PPI table (with a NUPI), is it possible to load data concurrently to the same table via multiple sessions by the same user ? In other words, in a PPI table does TD lock only a particular partition for loading or the entire table is locked ?

For e.g. we have the following table :

Create table test_concur


Stud_Id varchar(10),

Stud_Name varchar(100),

Course_Id varchar(10)

)Primary Index (Stud_Id)


Now consider the following records being loaded by each session -

Session 1:

1001, John Davis, 9001

1004, Mike Connor, 9001

Session 2:

1002, Peter Martin, 9002

1005, Kevin Pike, 9003

Assume that all the above records hash to the same AMP. Will TD allow loading these 4 records concurrently (since partition is different) or will it block one session until the earlier session concludes loading to the table ?

Please share your thoughts...



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