Could you also let us know, what operation you did, when you started getting the "transaction log full" error? Did you also check out the disk space / log file folder size too?
Db2 requires logging to perform tasks. You cannot eliminate logs, but you can make it circular type. To make it circular, go to the control center, right click on the database, choose configure database logging and follow the instructions in the wizard.
HTH.
Newbie