tOracleOutputBulkExec - 6.1

Talend Components Reference Guide

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6.1
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Talend Studio

tOracleOutputBulkExec properties

The tOracleOutputBulk and tOracleBulkExec components are used together in a two step process. In the first step, an output file is generated. In the second step, this file is used in the INSERT operation used to feed a database. These two steps are fused together in the tOracleOutputBulkExec component.

Component family

Databases/Oracle

 

Function

Executes the Insert action on the data provided.

Purpose

As a dedicated component, it allows gains in performance during Insert operations to an Oracle database.

Basic settings

Property type

Either Built-in or Repository.

Since version 5.6, both the Built-In mode and the Repository mode are available in any of the Talend solutions.

 

 

Built-in: No property data stored centrally.

 

 

Repository: Select the repository file in which the properties are stored. The fields that follow are completed automatically using the data retrieved.

 

Use an existing connection

Select this check box and in the Component List click the relevant connection component to reuse the connection details you already defined.

Note

When a Job contains the parent Job and the child Job, if you need to share an existing connection between the two levels, for example, to share the connection created by the parent Job with the child Job, you have to:

  1. In the parent level, register the database connection to be shared in the Basic settings view of the connection component which creates that very database connection.

  2. In the child level, use a dedicated connection component to read that registered database connection.

For an example about how to share a database connection across Job levels, see Talend Studio User Guide.

 

Connection type

Drop-down list of available drivers:

Oracle OCI: Select this connection type to use Oracle Call Interface with a set of C-language software APIs that provide an interface to the Oracle database.

Oracle Service Name: Select this connection type to use the TNS alias that you give when you connect to the remote database.

Oracle SID: Select this connection type to uniquely identify a particular database on a system.

Oracle Custom: Select this connection type to access a clustered database.

 

DB Version

Select the Oracle version in use

 

Host

Database server IP address.

Currently, only localhost, 127.0.0.1 or the exact IP address of the local machine is allowed for proper functioning. In other words, the database server must be installed on the same machine where the Studio is installed or where the Job using tOracleOutputBulkExec is deployed.

 

Port

Listening port number of DB server.

 

Database

Name of the database

 

Schema

Name of the schema.

 

Username and Password

DB user authentication data.

To enter the password, click the [...] button next to the password field, and then in the pop-up dialog box enter the password between double quotes and click OK to save the settings.

 

Table

Name of the table to be written. Note that only one table can be written at a time and that the table must exist for the insert operation to succeed.

 

Action on table

On the table defined, you can perform one of the following operations:

None: No operations is carried out.

Drop and create table: The table is removed and created again.

Create table: The table does not exist and gets created.

Create table if not exists: The table is created if does not exist.

Drop table if exists and create: The table is removed if it already exists and created again.

Clear table: The table content is deleted.

Truncate table: The table content is deleted. You do not have the possibility to rollback the operation.

 

File Name

Name of the file to be generated and loaded.

Warning

This file is generated on the machine specified by the URI in the Host field so it should be on the same machine as the database server.

 

Create directory if not exists

This check box is selected by default. It creates a directory to hold the output table if required.

 

Append

Select this check box to add the new rows at the end of the file.

 

Action on data

On the data of the table defined, you can perform:

Insert: Insert data to an empty table. If the table already contains data, the Job stops and the existing data remains in the table.

Update: Update the existing data. You have to set the key on the schema if this option is selected.

Append: Append data to the table, whether the table is empty or not.

Replace: If the table already contains data, delete all the existing data and insert the new data. If the table is empty, insert the new data.

Truncate: If the table already contains data, truncate all the existing data and insert the new data. If the table is empty, insert the new data.

 

Schema and Edit Schema

A schema is a row description, it defines the number of fields to be processed and passed on to the next component. The schema is either Built-in or stored remotely in the Repository.

Since version 5.6, both the Built-In mode and the Repository mode are available in any of the Talend solutions.

Click Edit schema to make changes to the schema. If the current schema is of the Repository type, three options are available:

  • View schema: choose this option to view the schema only.

  • Change to built-in property: choose this option to change the schema to Built-in for local changes.

  • Update repository connection: choose this option to change the schema stored in the repository and decide whether to propagate the changes to all the Jobs upon completion. If you just want to propagate the changes to the current Job, you can select No upon completion and choose this schema metadata again in the [Repository Content] window.

 

 

Built-In: You create and store the schema locally for this component only. Related topic: see Talend Studio User Guide.

 

 

Repository: You have already created the schema and stored it in the Repository. You can reuse it in various projects and Job designs. Related topic: see Talend Studio User Guide.

When the schema to be reused has default values that are integers or functions, ensure that these default values are not enclosed within quotation marks. If they are, you must remove the quotation marks manually.

For more details, see https://help.talend.com/display/KB/Verifying+default+values+in+a+retrieved+schema.

 

Field separator

Character, string or regular expression to separate fields.

Advanced settings

Advanced separator (for number)

Select this check box to change data separators for numbers:

Thousands separator: define separators you want to use for thousands.

Decimal separator: define separators you want to use for decimals.

 

Use existing control file

Select this check box and browse to the .ctl control file you want to use.

 

Field separator

Character, string or regular expression to separate fields.

 

Row separator

String (ex: "\n"on Unix) to separate rows.

 

Specify .ctl file's INTO TABLE clause manually

Select this check box to enter manually the INTO TABLE clause of the control file directly into the code.

 

Use schema's Date Pattern to load Date field

Select this check box to use the date model indicated in the schema for dates.

 

Specify field condition

Select this check box to define a condition for loading data.

 

Preserve blanks

Select this check box to preserve blank spaces.

 

Trailing null columns

Select this check box to load data with all empty columns.

 

Load options

Click + to add data loading options:

Parameter: select a loading parameter from the list.

Value: enter a value for the parameter selected.

 

NLS Language

From the drop-down list, select the language for your data if the data is not in Unicode.

 

Set Parameter NLS_TERRITORY

Select this check box to modify the conventions used for date and time formats. The default value is that of the operating system.

 

Encoding

Select the encoding from the list or select Custom and define it manually. This field is compulsory for DB data handling.

 

Oracle encoding type

Select the Oracle-specific encoding type for the data to be processed. This encoding type allows tOracleOutputBulkExec to properly generate the Sybase Bulk command.

 

Output

Select the type of output for the standard output of the Oracle database:

to console,

to global variable.

 

Convert columns and table names to uppercase

Select this check box to put columns and table names in upper case.

 

Bulk file parameters

Set the parameters Buffer Size and StringBuilder Size for a performance gain according to the memory size.

 

tStatCatcher Statistics

Select this check box to gather the job processing metadata at a job level as well as at each component level.

Dynamic settings

Click the [+] button to add a row in the table and fill the Code field with a context variable to choose your database connection dynamically from multiple connections planned in your Job. This feature is useful when you need to access database tables having the same data structure but in different databases, especially when you are working in an environment where you cannot change your Job settings, for example, when your Job has to be deployed and executed independent of Talend Studio.

The Dynamic settings table is available only when the Use an existing connection check box is selected in the Basic settings view. Once a dynamic parameter is defined, the Component List box in the Basic settings view becomes unusable.

For examples on using dynamic parameters, see Scenario 3: Reading data from MySQL databases through context-based dynamic connections and Scenario: Reading data from different MySQL databases using dynamically loaded connection parameters. For more information on Dynamic settings and context variables, see Talend Studio User Guide.

Usage

This component is mainly used when no particular transformation is required on the data to be loaded onto the database.

Limitation

The database server/client must be installed on the same machine where the Studio is installed or where the Job using tOracleOutputBulkExec is deployed, so that the component functions properly.