How to stop Teradata database?
Login to Teradata host (any node) and run below command:
# tpareset -x Your Comments
You are about to shutdown the database
on the system
Do you wish to continue (default: n) [y,n] y
Wait until pdestate changes to Down/Hardstop. This is a point when TD database is completey stopped.
# pdestate -a
PDE state: DOWN/HARDSTOP