Transaction Control Transformation in Informatica- Shikshaglobe

Content Creator: Vijay Kumar

What is Transaction Control Transformation?

Exchange Control is a functioning and associated change which permits us to commit or roll back exchanges during the execution of the planning. Commit and rollback tasks are vital as it ensures the accessibility of information.


While handling a high volume of information, there can be a circumstance when committing the information to the objective. On the off chance that a carry-out is performed too habitually, it will be an above to the framework. In the event that a commit is performed past the point of no return, on account of disappointment, there are chances of information misfortune.

So to give adaptability Transaction control change is given.

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TCL COMMIT and ROLLBACK Commands

There are five in-fabricated factors accessible in this change to deal with the activity.

Model:

In this model, we will commit information to the objective when dept no =20 conditions is seen as evident

Stage 1 - Create a plan with EMP as source and EMP_TARGET as target

Exchange Control Transformation in Informatica with EXAMPLE

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Stage 2 - Create another change utilizing the change menu, then, at that point,

Experience the difference

Select an exchange control as the new change

Enter change name "tc_commit_dept20"

Select make choice

Exchange Control Transformation in Informatica with EXAMPLE

Stage 3 - The exchange control change will be made, select done fasten

The Transaction Control Transformation is used to define transaction boundaries within a mapping. It helps maintain data consistency and integrity by controlling when data changes are committed or rolled back in the target system. This is particularly important in scenarios where multiple data operations need to be treated as a single transaction.

2. Types of Transaction Control Transformation

In Informatica, there are two main types of Transaction Control Transformations:

  • Commit Transformation: This type is used to commit data changes made during the ETL process. It is often used after a series of data operations to ensure that changes are saved permanently in the target system.
  • Rollback Transformation: Conversely, the Rollback Transformation is used to discard data changes and return the target system to its original state. It is employed when errors or conditions occur that necessitate the reversal of data changes.
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3. Configuring Transaction Control Transformation

Configuring the Transaction Control Transformation involves defining when and under what conditions commits or rollbacks should occur. This typically involves setting parameters such as:

  • Commit Condition: This specifies the condition that must be met for a commit to occur. For example, you can commit data if a certain number of records are processed without errors.
  • Rollback Condition: Similarly, the rollback condition defines when data changes should be rolled back. This is often triggered by errors or specific conditions that signal the need to abort the transaction.

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4. Use Cases for Transaction Control Transformation

Transaction Control Transformations are commonly used in ETL processes for scenarios such as:

  • Bulk Data Loads: When large volumes of data are being loaded, using transaction control ensures that data is committed in manageable chunks to prevent system overload or data inconsistencies.
  • Error Handling: Rollback transformations are crucial for handling errors during data processing. They allow you to revert changes and prevent corrupt data from being saved.
  • Complex Transformations: When a series of transformations must be treated as a single transaction, transaction control ensures that either all changes are saved or none at all.

5. Best Practices for Transaction Control Transformation

To use Transaction Control Transformations effectively, consider the following best practices:

  • Clear Logic: Ensure that the conditions for commits and rollbacks are well-defined and clear. This prevents unintended data operations.
  • Logging: Implement robust logging mechanisms to track transaction outcomes, especially when handling errors.
  • Testing: Thoroughly test your transaction control logic to simulate various scenarios and ensure it behaves as expected.

Exchange Control Transformation in Informatica with EXAMPLE

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Stage 4 - Drag and drop every one of the segments from the source qualifier to the exchange control change then, at that point, connect every one of the sections from the exchange control change to the objective table

Exchange Control Transformation in Informatica with EXAMPLE

Stage 5 - Double snap on the exchange control change and afterward in the alter property window

Select property tab

Click on the exchange control manager symbol

Exchange Control Transformation in Informatica with EXAMPLE

Stage 6 - in the articulation supervisor enter the articulation -

"iif(deptno=20,tc_commit_before,tc_continue_transaction)" and select OK

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It implies on the off chance that deptno 20 is found, commit exchange in target, else the ongoing system.


Exchange Control Transformation in Informatica with EXAMPLE

Stage 7 - Select OK in the past window


Exchange Control Transformation in Informatica with EXAMPLE

Presently save the planning and execute it subsequent to making meetings and work processes. This planning will commit the information to the objective at whatever point office number 20 is tracked down in the information.

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Read More :

Joiner transformation in Informatica
Router Transformation in Informatica
Mappings in Informatica
Workflow Monitor in Informatica

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