Installation and Configuration Best Practices › Configuration › Data Integrity

Data Integrity

Resolve overlapping-data conditions by investigating data in the intersection of the existing and new timestamp intervals. If an overlap occurred, set the OVERLAP value on the OPTIONS control statement so you will have an overlap grace time period. For duplicate data conditions, investigate your processes to determine why you are trying to reintroduce existing SMF data to CA SMF Director.

Business Value:

Resolving the timestamp issues for overlapping SMF data provides the following benefits:

• Guides you towards the appropriate setting for the OVERLAP parameter
• Reduces warning messages at DUMP time
• Reduces error messages at EXTRACT/PRINT time

Resolving duplicate data conditions provides the following benefits:

• Improves your processes to eliminate the conditions that caused an attempt to add existing data to the SCDS
• Allows for continued execution and availability of CA SMF Director
• Reduces the need for manual intervention

Additional Considerations:

Overlap detection can occur because the timestamp fields in vendor and user-written software are not always properly updated before writing their SMF records. This appears to CA SMF Director to be an overlapping data condition, but it is really a “false positive” caused by the incorrect setting of the timestamp fields.

If CA SMF Director notifies you of an overlap condition, you can do the following:

• Extract or print all the data by using the parameter PERMIT
• Avoid extracting or printing overlapping records by using the parameter NODUPS

More Information:

See the section on Overlapping SMF Data in the Systems Programmer Guide.