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How to start Teradata database?

First check Teradata state and it should be Down/Hardstopped

Login to Teradata host (any node) and run below command:

# pdestate -a
PDE state: DOWN/HARDSTOP

Issue below command to start Teradata

# /etc/init.d/tpa start
Teradata Database Initiator service is starting…
Teradata Database Initiator service started successfully.

Wait until state is Run/Started. This is when Teradata database is ready for connections.

# pdestate -a
PDE state is RUN/STARTED.
DBS state is 4: Logons are enabled – Users are logged on