Sequence Generator doe not allow negative values for allocation-size -------------------------------------------------------------------- Key: HHH-5933 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5933 Project: Hibernate Core Issue Type: Bug Affects Versions: 3.6.0 Environment: Hibernate 3.6.0, Derby 10.6 Reporter: Rich Sayre In my ORM.xml I have <sequence-generator name="MY_SEQ" allocation-size="-1" sequence-name="MY_SEQ" initial-value="-10" /> When Hibernate creates the sequence the following statement executes: create sequence MY_SEQ start with -10 increment by 1 In Derby, negative values can be used in Sequences http://db.apache.org/derby/docs/10.6/ref/rrefsqljcreatesequence.html I also noticed that if I have: <sequence-generator name="MY_SEQ" allocation-size="1" sequence-name="MY_SEQ" initial-value="-10000000" /> The first time an Id is generated, Hibernate seems to be looping from 0 to initial-value for some reason. I kept seeing "values next value for" printed to my output. It took about 5 minutes to get the first id generated. -- 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