During CA Fast Unload for DB2 for z/OS (PFU) execution within the Post Install Create Required DB2 Objects step (ssid0001) or running against a table that is rarely used may receive the following error message:
PFU0221E - HEADER PAGE ERROR -> FOUND PAGE SIZE : 00000 EXPECTED 04096
This error may occur because PFU does a check of the tablespace header by default to ensure validity. This error normally occurs when a tablespace has not been dropped and recreated or reorged since a previous release of DB2.
To bypass this check, either manually create hlq.CDBAPARM member PFU specifying VALIDATE-HEADER NO or add VALIDATE-HEADER NO to PFU control card input to bypass header page validation.
A reorg of the tablespace would be recommended to resolve the header page discrepancy.