  KKLT scenario has succeeded in stabilizing the volume modulus and
constructing metastable de Sitter (dS) vacua in type IIB string theory. We
revisit to investigate the possibility of the oscillon (or I-ball) formation in
the KKLT scenario when the volume modulus is initially displaced from the dS
minimum. Special attention is paid to physically realistic initial conditions
of the volume modulus, which was not taken in the literature. Using lattice
simulations, we find that oscillons do not form unless the volume modulus is
initially placed at very near the local maximum, which requires severe
fine-tuning.
