Why the workflow is failed after running two hours in informatica?

GE,

Design a mapping to calculate department wise sum of salaries and load it in single target? Source Target Deptno Salary Deptno Salary 10 100 10 600 10 200 10 600 10 300 10 600 20 200 20 800 20 300 20 800 20 300 20 800 30 400 20 1500 30 500 30 1500 30 600 30 1500

Cap Gemini,

Calculate sum of salaries department wise. Then the sum will be repeat for all columns in each department. Develop a mapping for this.

Cap Gemini,

There are two sessions are connected to the workflow. When the first session run load the data(employees data sum_salaries <= 1000000) into the target1. When the second session run load the data(employees data sum_salaries > 1000000) into the target2. How to achieve this?

Wipro,

On which transformations you created partitions in your project?

Cap Gemini,