On DB2 Z/OS expressions like property = property + 1, ... are problematic, because if the timezone is set to european time zone the comma will be interpreted as floating number delimiter. In that case Z/OS will try to cast the number to double, but the number after the comma is missing.
To avoid this and be more stable on Z/OS or other DB versions we need to change expressions
like
${prop} = ${prop} +1,
TO
${prop} = 1 + ${prop},
in all UPDATE Statements (in all mibatis mapping files).