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Loading Session Statistics into adatabase table

Applies to:

Informatica PowerCenter

Summary

This article briefs about loading the session statistics into a database table.

Author Bio

Author(s): Sukumar Balasubramanian

Company: CIBC

Created on: January 11, 2010

Sukumar Balasubramanian is an experienced Informatica ETL Consultant working with CIBC, Canada.He has good exposure to Data Integration/Data Warehousing Projects. He is also a key contributor ininformatica-l group of ittoolbox

Informatica Technology Network http://technet.informatica.com

2009 Informatica Corporation. All Rights Reserved. 1
http://technet.informatica.com/http://technet.informatica.com/http://technet.informatica.com/http://technet.informatica.com/


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Loading Session Statistics into a database table

Table of Contents

INTRODUCTION .................................................................................................................................. ............3

SOLUTION OVERVIEW .................................................................................................................................. .4

SOLUTION STEPS ...........................................................................................................................................4

SESSION1 ................................................................................................................................................... .4

WORKFLOW VARIABLES ............................................................................................................................4

ASSIGNMENT TASK ....................................................................................................................................4

SESSION2 ................................................................................................................................................... .4

PRE-Session Variable ..................................................................................................................................5

Workflow Execution .......................................................................................................................................5

ADVANTAGES ................................................................................................................................................6

DISCLAIMER AND LIABILITY NOTICE ............................................................................................................7


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INTRODUCTION

A frequent issue that a developer faces with Informatica Development is that developers won't have access

to informatica repository views due to security reasons. But they need to load the session statistics such as

Session Start & End Time, Success Rows, Failed Rows and Rejected Rows etc. into a database table for

audit/log purpose.

This article briefs about loading the session statistics into a database table using Informatica pre-defined

variables.




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SOLUTION OVERVIEW

After performing the below solution steps your end workflow will look as follows:

START SESSION1 ASSIGNMENT TASK SESSION2

SOLUTION STEPS

SESSION1

This session is used to achieve your actual business logic. Meaning this session will perform your actual dataload. It can be anything FileTable, FileFile or TableTable.

WORKFLOW VARIABLES

Create the following workflow variables.

$$Workflowname

$$SessionStartTime

$$SessionEndTime

$$TargetSuccessrows

$$TargetFailedRows

ASSIGNMENT TASK

Use the Expression tab in the Assignment Task and assign as follows:

$$workflowname = $PMWorkflowName

$$sessionStartTime = $ SESSION1.StartTime

$$SessionEndTime = $ SESSION1.Endtime

$$ TargetSuccessrows = $ SESSION1. TgtSuccessRows

$$ TargetFailedRows= $ SESSION1. TgtFailedRows

SESSION2

This session is used to load the session statistics into a database table.

This should call a mapping say m_sessionLog

This mapping m_sessionLog should have mapping variables for the above defined workflowvariables such as $$wfname, $$Stime, $$Etime, $$TSRows and $$TFRows.




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This mapping m_sessionLog should use a dummy source and it must have a expressiontransformation and a target ( database Audit table)

Inside the expression you must assign the mapping variables to the output ports

workflowname=$$wfname

starttime=$$Stime

endtime=$$Etime

SucessRows=$$TSRowsFailedRows=$$TFRows

Create a target database table with the following columns

Workflowname, start time, end time, success rows and failed rows.

Connect all the required output ports to the target which is nothing but your audit table.

PRE-Session Variable

Session 2: In the Pre-session variable assignment tab assign the mapping variable = workflowvariable

In our case

$$wfname=$$workflowname

$$Stime=$$sessionStartTime

$$Etime=$$sessionEndTime

$$TSRows=$$TargetSuccessrows

$$TFRows=$$TargetFailedrows

Workflow Execution

Execute the workflow.

1. Session1 will achieve your business requirement.

2. Once the session is completed the assignment task will assign the session1 statistics to theappropriate workflow variables.

3. Session2 will assign the workflow variables to the mapping variables and load the session1 sessionstats to the audit table in your database.




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ADVANTAGES

Pure informatica solution. No Unix/windows scripts are required for this purpose

We need only one mapping to load the required session statistics into our Audit table.

After each session we need to assign and call the above mapping that loads the previous sessionstatistics into our audit table.




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DISCLAIMER AND LIABILITY NOTICE

Informatica offers no guarantees and assumes no responsibility or liability of any type with respect to the content of this software asset,including any liability resulting from incompatibility between the content within this asset and the materials and services offered byInformatica. You agree that you will not hold, or seek to hold, Informatica responsible or liable with respect to the content of this softwareasset.



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