This fetching issue is related to specifying fetchcols for a table (or more) when dynamic table resolution is used. The fetch syntax is built for the first table and then not rebuilt so the same syntax is used for all tables that have a FETCHCOLS option.
Fix:
Add WILDCARDRESOLVE IMMEDIATE parameter to extract
This parameter causes table resolution during start-up processing and the fetch syntax will be created for each table and not reused. This is the same as NODYNAMICRESOLUTION.
BUG:12432903 BUG:12582889
Add WILDCARDRESOLVE IMMEDIATE parameter to extract
Related Bugs (Ref from Metalink):