On windows7 I solved the issue by adding to db2cli.ini these rows (replace MYDATABASE and MYDATABASEALIAS with your data):
[MYDATABASE] dbalias=MYDATABASEALIAS LONGDATACOMPAT=1 LOBMAXCOLUMNSIZE=1048575 if you need more info about db2cli.ini go to this page http://publib.boulder.ibm.com/infocenter/db2luw/v9r7/index.jsp?topic=%2Fcom.ibm.db2.luw.apdv.cli.doc%2Fdoc%2Fc0007882.html
