Re: 5.3 to 5.4 upgrade issues

CPF4204 is the DB2 for i5/OS Query Engine equivalent to the i5/OS message CPF9999. The only way to know what transpired, is to have investigated the error(s) that led to the generic failure message being issued. Having performed actions like recompile\recreate of objects may enable bypassing the error condition, but does not [assist to] identify the defect origin. That doing so [appears to] resolves the situation does not necessarily imply that the issue is related to conversions, even if that is probable. However it is surely not due to /background/ conversions, because SQL program [associated space] and database [file, member, alignment, et al] object conversions would [almost exclusively] transpire on /first touch/ of the objects.

Reporting the problem as a defect might assist to both identify the origin and resolve the error by effecting a correction being provided in the form of a PTF [even if only for future instances of similar upgrades and objects], so others need not perform similar actions in an attempt to bypass\circumvent the defect. Or, the problem might be found to already have a preventive PTF available; for conversion issues, such that future first-touch conversions will not exhibit the same failure.

Regards, Chuck