Hi myashu,
Add this inside your environment:
uvm_config_db #(int)::set(this, "path_to_your_running_sequencer.*", "do_not_randomize", 1);
And this in your default_sequence (your base sequence):
uvm_config_db #(int)::get(null, get_full_name(), "do_not_randomize", do_not_randomize);
It should solve your problem.
An,