August 16, 2023

tPostgresqlRollback – Docs for ESB 6.x

tPostgresqlRollback

Avoids to commit part of a transaction involuntarily.

The tPostgresqlRollback cancels the transaction commit
in the connected DB.

tPostgresqlRollback Standard properties

These properties are used to configure tPostgresqlRollback running in the Standard Job framework.

The Standard
tPostgresqlRollback component belongs to the Databases family.

The component in this framework is generally available.

Basic settings

Component list

Select the tPostgresqlConnection
component in the list if more than one connection are planned for
the current Job.

Close Connection

Clear this check box to continue to use the selected connection
once the component has performed its task.

Advanced settings

tStat
Catcher
Statistics

Select this check box to collect log data at the component
level.

Enable parallel execution

Select this check box to perform high-speed data processing, by treating multiple data flows
simultaneously. Note that this feature depends on the database or the application ability to
handle multiple inserts in parallel as well as the number of CPU affected. In the Number of parallel executions field, either:

  • Enter the number of parallel executions desired.

  • Press Ctrl + Space and select the appropriate
    context variable from the list. For further information, see
    Talend Studio
    User Guide
    .

Note that when parallel execution is enabled, it is not possible to use global variables to
retrieve return values in a subjob.

  • The Action on table
    field is not available with the parallelization function. Therefore, you
    must use a tCreateTable component if you
    want to create a table.

  • When parallel execution is enabled, it is not possible to use global
    variables to retrieve return values in a subjob.

Usage

Usage rule

This component is more commonly used with other tPostgresql*
components, especially with the tPostgresqlConnection and tPostgresqlCommit components.

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
.

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: Reading data from 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
.

Related scenario

For tPostgresqlRollback related scenario, see tMysqlRollback


Document get from Talend https://help.talend.com
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