Executing an RC/Migrator for Db2 for z/OS (RCM) ALTER to modify a table to convert column OLDCOL, which is in DATE format (local), to a column NEWCOL,
which is Timestamp format, results in error message RMA231E message:
RMA231E ERROR OCCURED DURING GENERATION OF LOAD CONTROL CARDS FOR TABLE:
OLD NAME colname , NEW colname
The problem is directly related to the DECP parameters DATE and DATELEN set to LOCAL and 10 respectively.
Batch Processor Unload does not support locally defined formats and this explains the RMA231E error that you are experiencing for this ALTER.
The recommendation therefore is to use the IBM Unload utility instead of the Batch Processor Utility. IBM UNLOAD support was added in release r19 for RC/Update and RC/Migrator and can be activated through Model Services. The solution for this problem is to use IBM UNLOAD/IBM LOAD combination.