Withdata Software provide some ETL (Extract-Transform-Load) tools for DB2:
FileToDB Load TXT, CSV, TSV, XML, JSON, Excel, SQL, RDF, INI data to DB2
DBToFile Export DB2 data to TXT, CSV, TSV, XML, JSON, Excel, SQL files
DBCopier Copy data between DB2 and other rational databases
MongoToDB Ease your MongoDB to DB2 converting work
DBBlobEditor Edit / Import / Export BLOB data in DB2
Convert your data online, free
Free in-browser converters for CSV, Excel, JSON, XML and SQL: Withdata Online Data Conversion. Large files, batch conversion or scheduling? See the offline desktop apps, or browse all data conversion tools.