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Testing & Debugging in Informatica PowerCenter

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Agenda

What do we test in Informatica? Preparing to test Different types of problems Solutions to problems Using the debugger Where to look for problem causes Common problems and their solutions

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Testing – What needs to be tested?

Format Examples:

File length Number formats Representation of NULL

Logic Examples:

Calculation results Results of logical conditions

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Testing – Preparing for battle

Prepare test plan Grant appropriate file permissions Prepare test data

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Types of problems

Format related“What is this junk data?!!!””My file looks ugly!!”

Logic related“Why am I getting a different output? I am SURE my

logic is correct” Others

Workflow fails No session log written

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Fighting it out…

Format related problems

Solution: File length – Check port length/precision Number formats – Check port

length/precision Representation of NULL – check session

properties

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Fighting it out…

Logic related problems

Solution: Debugger!!!!!

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Features in the Debugger

Setting break points Evaluating expressions Discarding target data

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Using the Debugger

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Fighting it out…

Other problems

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Where to look?

1. Session property in Workflow monitor

2. Session log

3. Session property in Workflow designer

4. Debugger

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Accessing the session property in Workflow

monitor

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Accessing the session Log file in Workflow

monitor

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Changing the logging to ‘verbose’ mode

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Changing ‘NULL’ representation

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Fighting it out…

Common problems and causes

SNo Problem Solution

1 Workflow fails at the beginning itself Check monitor session properties if file access problems exist

2 Workflow fails at the beginning itself, no file access problems

Check SQL syntax in source qualifiers

3 Workflow fails for some reason Check session log. If necessary, run session in ‘verbose’ mode

4 Data is being truncated for some reason

Check port length

5 Logical equality/inequality operators do not seem to work

Trimming is needed/Check data type

6 Logical conditions are getting executed wrongly

Check if NULL checks have been performed

7 Numbers are being read from flat file. Corresponding calculation results are wrong

Check length/precision of ports

8 During debugging, all ports get null value

Some fatal error has occurred. Eg: division by zero, invalid date

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Thank You!