Teradata Parallel Data Pump

Chapter 3: Teradata TPump Commands
LOGTABLE
The log table is maintained automatically by Teradata TPump. If this table is manipulated in
any way, the restart capability is lost. The only action that should be taken is to DROP the log
table; never attempt to delete rows from the table. The log table should not be dropped when
the Teradata TPump job using that log table is running. If the log table is dropped during a job
run, Teradata TPump will run into errors.
The default for the database name cannot be overridden with a DATABASE statement because
it must come after LOGTABLE/ LOGON. Instead, the LOGTABLE dbname option must be
used.
Teradata TPump allows a DELETE DATABASE statement because DELETE is a standard
Teradata SQL function. This statement can delete the current restart log after it has been
created, which terminates the job.
Example
The following example presents both the LOGTABLE command and the LOGON command
as they typically occur.
.logtable Mine.Logtable001;
.logon tdpx/me,paswd;
Log Table Space Requirements
The calculation of space requirements for a Teradata TPump log table is highly dependent on
the specifics of the job. Although there are mandatory inserts for every Teradata TPump job,
others occur on a job-dependent basis. See “Estimating Space Requirements” for details on
how to calculate log table space.
172 Teradata Parallel Data Pump Reference