Universal Cache User Guide : IBM InfoSphere CDC for solidDB® reference : User exits for IBM InfoSphere CDC : Defining a stored procedure user exit
  
Defining a stored procedure user exit
When defining a stored procedure in IBM InfoSphere CDC, consider the following:
Overloaded stored procedures are not supported.
Stored procedures must have at least two parameters, which must be the first two defined, in the following order:
result: An integer output parameter, used to return any error codes to the event log.
returnMsg: A character output parameter, used to return error messages to be logged.
See also
User exits for IBM InfoSphere CDC