The fix has been committed in cream-client-api-c/master branch.

To reproduce the bug:

Make sure that ICE has the high verbosity (ice_log_level = 700 set in the /etc/glite-wms/glite_wms.conf.
Issue this command in the WMS node:

tail -f /var/log/wms/ice.log|grep Returned

From a UI submit a simple job to the WMS. After a little while you should see an output of the tail, like this:

2013-09-20 14:48:49,992 INFO - iceCommandSubmit::try_to_submit() - TID=[34724896] For GridJobID https://prod-wms-01.pd.infn.it:9000/qdx1I4ovUVliADyiRRR3sw CREAM Returned CREAM-JOBID https://ce203.cern.ch:8443/CREAM268077608 DB_ID []

The DB_ID is empty "[]".

To test the fix:

Now, stop just ICE (service glite-wms-ice stop). Upgrade the glite-ce-cream-client-api-c to the fixed version and restart ICE.
Re-issue again the tail as above and submit a job from the UI. Now the previous log line should look like this:

2013-09-20 14:52:30,560 INFO - iceCommandSubmit::try_to_submit() - TID=[31209248] For GridJobID https://prod-wms-01.pd.infn.it:9000/fgLX60kbmq5qGVHTTB53LA CREAM Returned CREAM-JOBID https://ce203.cern.ch:8443/CREAM365122270 DB_ID [1354112666000]

The DB_ID is now filled with a proper timestamp.