Handles SQLalchemy exception specially
Handles SQLalchemy exception specially


Former-commit-id: 3460fa3a6c8cd6fa97d8b90bf44a552f9b5d5caa [formerly f8d42d819ca28b8e7d02724660d9ea4f8d1cf0b2]
Former-commit-id: a888387ec96b12078332018c8a042c6743a77d03
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine