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Finding duplicate access paths

How might I go about finding all duplicate access paths on a given file or set of files? Many of these files have over 10-12 keys and 10-30 logicals each, which makes it difficult to do this manually.
Yes, that can be difficult process. The good news is that DB2 automatically shares the underlying OS/400 index object across access paths (i.e., logical files or indexes) that have the exact same key fields. So even though logically access paths have been duplicated, physically there's only one copy of the access path object that's being shared across all the duplicates.

If you want to try and graphically display/compare the access path definitions, then you could use the Database Navigator function of iSeries Navigator to draw a picture of the access paths related to a file. Queries can also be run against the system data dictionaries to output a list of the access paths just giving the object name and key fields names. There's an example utility using this approach on the ##DB2 UDB for iSeries Web site|http://www.iseries.ibm.com/db2/indexlist.htm ##

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This was last published in February 2004

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