Retrieving and updating Blobs, Clobs, and DBClobs is supported by the DB2 driver with the following databases:
DB2 V8.x and higher for Linux/UNIX/Windows
DB2 for z/OS
DB2 for i
The DB2 driver supports Clobs up to a maximum of 2 GB with these databases. The DB2 driver supports retrieving and updating Clobs up to a maximum of 32 KB with all other supported DB2 databases.