1. 144 rows.
2. Yes.
We have few systems configured exactly the same. One few of them the delete from the application runs quickly. Today I did a query on v$sql for the system where it runs fine and on the other one. I see this difference, the columns for IS_BIND_SENSITIVE and IS_BIND_AWARE on the slower system is NO and on the one where the sql runs faster is YES. Any clues , I am going on this.

Thanks,
SK