gatein/gatein-portal — pull request #890 by ttthanh (2014-07-23 10:41:31+00:00)
Title: GTNPORTAL-3341: Cannot delete users with OracleDB because of "ORA-02292:...

... integrity constraint (XXXXX) violated"

Fix description:
- Port partial fix from Gatein 3.6 which avoids use empty string