ConstraintViolationException returns null with PostgresDialect -------------------------------------------------------------- Key: HHH-1599 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-1599 Project: Hibernate Core Issue Type: Bug Components: core Affects Versions: 3.1.3 Environment: Hibernate 3.1.3 , Postgres 8.1.2 (i686), postgresql-8.2dev-501.jdbc.jar Reporter: Niclas Lindberg Assignee: Diego Plentz Priority: Minor Attachments: HHH-1599-postgres-only.patch, HHH-1599.patch Original Estimate: 3 minutes Remaining Estimate: 3 minutes ConstraintViolationException.getConstraintName() returns null. The problem is that the message being parsed comes from the SqlException that is the inputparameter to extractConstraintName(SqlException) in ViolatedConstraintNameExtracter. Solution. The message provided by sqlException.getMessage() is "batch bla bla something" but the correct Exception message to parse is sqlException.getNextException().getMessage()