yes_no type is created a char(255) column and not char(1) column ---------------------------------------------------------------- Key: HBX-1176 URL: http://opensource.atlassian.com/projects/hibernate/browse/HBX-1176 Project: Hibernate Tools Issue Type: Bug Components: hbm2java Reporter: Aviad Lichtenstadt Priority: Minor The following mapping creates a table with a char(255) column instead of char(1) column This happened to me first with hibernate 3.6 Using hibernate 3.2.0 it worked fine I used the following method: Configuration.generateSchemaCreationScript(dialect); <?xml version="1.0"?> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> <hibernate-mapping package="com.test.hibernate.mapping" default-lazy="false"> <class name="SimplePojo" table="SIMPLE_POJO" > <cache usage="read-write" /> <id name="id" column="ID"> <generator class="sequence"> <param name="sequence">SEQ_POJO</param> </generator> </id> <property name="testBool" type="yes_no"></property> </class> </hibernate-mapping> -- 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