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File Comparison

The File Comparison display (6.4) detects differences in application or system data files. You must have read access authority to the files that you want to compare.

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Step

Description

W/P Ref

Finding

Remarks

1

Note any module that changed since the last review using the Parmlib Member Status display (2.1.2). Browse the member to note the particular data set containing that member.

 

 

 

2

Determine exactly what was changed in the current logical Parmlib data set using the File Comparison display (6.4) and an archival copy of the appropriate logical Parmlib data set.

 

 

 

3

If Parmlib changes were found in Steps 1 and 2, search SMF for updates to the appropriate logical Parmlib data set using the File History Search display (6.5).

 

 

 

4

If changes were found in Steps 1 through 3, verify that these changes agree with the data center’s change authorization records and procedures.

 

 

 

5

Obtain the names of key production files from the Operations staff. Compare current and archive copies of the files using the File Comparison display (6.4). Note changes detected by the comparison.

 

 

 

6

Select a sample of these changes and reconcile with input transactions.