Hello Lars,
Thanks for your prompt reply.
I am creating this test data just to test my application performance with larger data. The physical memory on host is 17514 mega bytes.
Now, I understand the reson for the issue. It is trying to perform join, read the whole set of data(ex: 10000000 rows) and then choose the top 10000 rows and insert those into a table.
Well, I do have a question.Does each join operation allocates a dedicated space in the memory for processing? Something like memory space locking machanism.
Thanks
Sangamesh