Two types of restarts exist:
- Automatic
- User-initiated
Automatic Restarts
When a software or hardware failure occurs, the Teradata Database system automatically attempts to bring itself back up into an operational state. This type of restart results in an automatic execution of a Teradata Database system-recovery operation. As part of the restart processing, the Teradata Database system saves the error codes that were generated, reloads Teradata Database system software, and enables logons.
User-Initiated Restarts
Manual restarts are activated by the user. Users can initiate a restart from any of the hardware switches or by one of the following methods:
- Issue the RESTART command. For information on the RESTART command, see Vproc Manager (vprocmanager).
- At the system command line, type the following command:
tpareset comment-string
where comment-string briefly describes the reason for the restart.