Constraint violation Error -------------------------- Key: HHH-3531 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3531 Project: Hibernate Core Issue Type: Bug Components: core Affects Versions: 3.3.1 Environment: Spring/Hibernate/Mysql/ Reporter: suman Hello All, I am Using Spring with Hibernate in my web application.I got Syncronize Exception in some Cases.Atually i am updating to table(sno[PK,Auto increment],acno,pan) In my HBM file i am mentioning sno as increment of generator class.Keen obeservation i am not getting this sort of problem always.In some Time i got this sort of proble, Log as follows: INFO | jvm 2 | 2008/10/15 16:06:25 | 16:06:25,353 WARN JDBCExceptionReporter:71 - SQL Error: 1062, SQLState: 23000 INFO | jvm 2 | 2008/10/15 16:06:25 | 16:06:25,354 ERROR JDBCExceptionReporter:72 - Duplicate key or integrity constraint violation, message from server: "Duplicate entry '984041' for key 1" INFO | jvm 2 | 2008/10/15 16:06:25 | 16:06:25,355 ERROR AbstractFlushingEventListener:277 - Could not synchronize database state with session INFO | jvm 2 | 2008/10/15 16:06:25 | org.hibernate.exception.ConstraintViolationException: could not insert: [com.xxx.model.map] -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira