Recovery Vs On error Resume Next

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What is Recovery and  On error Resume Next?
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        Recovery scenario mechanism  and On error Resume Next both are used to avoid the effect
of unexpected errors caused by the application as well as script

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Why Recovery and On error Resume Next?
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         As automation test engineer we need to develops the scripts such away that scripts shouldn' t effect  even if any unexpectd error occurs

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Genaerally while executing scripts we may get two types of unexpected errors

1)Error From application
2)Error From Script

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How to handle the Error in the application?
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                      To handle the Unexpected errors in application we will use QTP recovery scenarios mechanism or by VB script if else condition

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How to handle the Error in the Script?
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            To handle the Unexpected errors in script we will use VB script On error resume next

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On error Resume Next

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Why On Error Resume Next:
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To avoid the unexpected errors caused by the script

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What "On Error Resume Next" will do?
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These Statment will supress the error produced by the script and resumes the next step

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On Error Goto 0
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These will be helpful to disabled the Activated On error resume next statement

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Err Object :
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In VB Script every single statement will produce the Error number,if it is Zero stament is correct else statment is false

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To get the error number :
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msbox Err .number

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To get the error Description:
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msgbbox Err.Description

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To clear the error:
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Err.Clear

Note: When We get the error number through Err object, we should explicitly clear the error number,otherwise script will carries only one number
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To raise the error:
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Err.Raise

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Note : On Error Resume Next will handle the only Script error not application errors
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