I have encountered a problem when maintaining the system: In the .NET, use ODBC to connect DB2, and take the CLOB field. Surprisingly, when executing the Select * from Table, even the name of the clob field can not be taken.
Finally, I checked the information and set it in ODBC. Specifically, the high-grade / data type attribute / long object in ODBC is used, the value is selected as longvar, and then the maximum is selected.
I don't know if you encounter this problem with this to take a large-term.