How do I run a FastLoad script in Teradata?

How do I run a FastLoad script in Teradata?

fl, you can run the FastLoad script using the following command in UNIX and Windows. FastLoad < EmployeeLoad. fl; Once the above command is executed, the FastLoad script will run and produce the log.

How does Teradata FastLoad work?

Teradata FastLoad utility establishes multiple session i.e., one session per AMP by default, does not use any transient journal during operation, and transfer data using block rather than row to load data into the table. That’s why it is so fast. It loads only one table at a time.

How many phases are in FastLoad in Teradata?

two phases
Fastload has two phases: acquisition phase and application phase. mload has 5 phases(Note: however there is no acquisition phase for mload delete). mload phases: Preliminary,DML Transaction,Acquisition,Application,Cleanup. The name itself is fast load.

What is FastLoad?

Fastload is a Teradata Bulk Load Utility used to load vast amounts of data as quickly and efficiently as possible. As a bulk load utility, it bypasses the transient journal and loads data in blocks.

Why FastLoad is faster than MultiLoad?

FastLoad is generally faster when loading an empty table because FastLoad was designed specifically for that purpose. FastLoad can sort the incoming rows directly into the target table, whereas MultiLoad first sorts the incoming rows into a worktable and then applies the worktable to the target table.

How do I restart FastLoad?

1 Remove the CREATE TABLE statement and any DROP TABLE and DELETE statements from the Teradata FastLoad job script to prevent the restarted job from dropping the partially loaded Teradata FastLoad table or deleting the entries in the two error tables. 2 Invoke Teradata FastLoad to start the job.

How does TPT work in Teradata?

Teradata Parallel Transporter aka TPT is new generation utility tool aim to create one stop tool for all the activities related to loading and exporting of date from/to Teradata database. Teradata advise to prefer TPT over existing utilities such as fastload, fastexport, multiload & tpump.

Does FastLoad allow duplicates?

The Reason behind Fastload not allowing Duplicate rows is the Restart Logic. So when its restarted simply doesn’t know, if a row was duplicate within the data or was sent twice because of a restarted FastLoad (in Application Phase).

What is FastLoad and MultiLoad in Teradata?

FastLoad can sort the incoming rows directly into the target table, whereas MultiLoad first sorts the incoming rows into a worktable and then applies the worktable to the target table. MultiLoad fully supports mulltiset tables with duplicate rows.

What is TPT script in Teradata?

Why Fastload does not allow duplicates?

What happens when Fastload fails?

Restarts. Fastload will automatically restart a job after a database failure after the cause of the failure has been fixed and the database has reset. This allows a restart to continue reading an input file at the point after the last checkpoint taken before a failure or inter-ruption occurs.

How to create a FastLoad job script in Teradata?

Create a FastLoad job script that performs the following actions: 1 Logon to the database; 2 Drop target table; 3 Create target table; 4 Load data into the target table; More

What are errorfiles and define in Teradata FastLoad?

ERRORFILES − Identifies the 2 error tables that needs to be created/updated. CHECKPOINT − Defines when to take checkpoint. SET RECORD − Specifies if the input file format is formatted, binary, text or unformatted. DEFINE − Defines the input file layout. FILE − Specifies the input file name and path.

What is the input file for fastload.txt?

The input file used for the load is named EMPS.TXT. Below the sample script each step will be described in detail. Normally it is not a good idea to put the DROP and CREATE statements in a FastLoad script. The reason is that when any of the tables that FastLoad is using are dropped, the script cannot be restarted.

What are the terms used in FastLoad script?

Following is the list of common terms used in FastLoad script. LOGON − Logs into Teradata and initiates one or more sessions. DATABASE − Sets the default database. BEGIN LOADING − Identifies the table to be loaded. ERRORFILES − Identifies the 2 error tables that needs to be created/updated. CHECKPOINT − Defines when to take checkpoint.