Teradata Parallel Data Pump

Chapter 3: Teradata TPump Commands
BEGIN LOAD
Syntax Element
ArraySupport
ON/OFF
TENACITY
hours
Description
“ArraySupport ON|OFF” option to the .BEGIN LOAD command and
the .DML command.
When “ArraySupport ON” is specified in the .BEGIN LOAD command,
the .DML commands enclosed in .BEGIN LOAD and .END LOAD
command pair will use the ArraySupport feature for its DML statement,
unless “ArraySupport OFF” is specified for the .DML command. The
default value of ArraySupport for the .BEGIN LOAD command is OFF.
When “ArraySupport ON|OFF” is not specified with the .DML
command, the default value for ArraySupport for that .DML command
is the effective setting of ArraySupport in the .BEGIN LOAD command
where the .DML command resides. When “ArraySupport ON|OFF” is
specified at the .DML command, the specified value overrides the
default setting determined by the .BEGIN LOAD command.
When a .DML command is using the ArraySupport feature, it must
contain one and only one DML statement, and the session partition that
the .DML command references needs to be used by this .DML
command exclusively.
If the DML statement is an UPSERT-type statement, it can be specified
as a pair of INSERT/UPDATE statements with DO INSERT FOR
MISSING UPDATE clause. Teradata TPump will create its equivalent
form of UPDATE … ELSE INSERT …, example Atomic Upsert, and use
it as the actual DML statement. Or an UPDATE … ELSE INSERT …
statement can be directly specified with DO INSERT FOR MISSING
UPDATE clause.
The non-atomic form of UPSERT is not supported by Teradata TPump
Array Support.
Keyword (with hours parameter) defining how long the utility tries to
log on the sessions needed to perform the Teradata TPump job.
If a logon is denied, Teradata TPump delays for the time specified by the
SLEEP parameter (the default is six minutes) and retries the logon. It
retries until either the logon succeeds or the number of hours specified
by TENACITY is exceeded.
If the TENACITY parameter is not specified, the utility retries the
logons for four hours.
Teradata TPump tenacity factor, as an integral number of hours.
Specifies how long Teradata TPump keeps trying to logon to the
required sessions.
The default value for hours is 4 if the parameter is not specified. If hours
is specified as 0, Teradata TPump does not retry logons after a logon
fails because of a capacity limit.
When a “no more sessions” error appears (either a 301 return code from
a workstation CLI or a 513 return code from a mainframe CLI),
Teradata TPump drops the sessions already acquired, and terminates the
job without trying another logon.
Teradata Parallel Data Pump Reference 101