Hibernate populate database schema multiple times with same DDL in multiple persist units. ------------------------------------------------------------------------------------------ Key: HHH-6667 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-6667 Project: Hibernate Core Issue Type: Improvement Components: core Affects Versions: 4.0.0.CR3 Reporter: Jeff Yu I have a multiple persist unit(s) within a JPA project. I've found that by specifying the 'hibernate.hbm2ddl.auto=create',the same database schema ddl (that is generated by Hibernate itself, contains all of those persist units annotated entities) has been populated multiple times. So I think it would be better that we just populate database schema ddl per a persist unit. I've tried this with the Ejb3Configuration (programmatically configure the entities) to add those annotated entities, it is working fine. Below is some ERROR(s) that I've got inside my project when initialising the EntityManagerFactory: INFO - CoreMessageLogger_$logger.transactionStrategy(2248) | HHH00268:Transaction strategy: org.hibernate.engine.transaction.internal.jta.CMTTransactionFactory INFO - CoreMessageLogger_$logger.usingAstQueryTranslatorFactory(1878) | HHH00397:Using ASTQueryTranslatorFactory INFO - CoreMessageLogger_$logger.runningHbm2ddlSchemaExport(3504) | HHH00227:Running hbm2ddl schema export ERROR - CoreMessageLogger_$logger.unsuccessfulCreate(2374) | HHH00389:Unsuccessful: create table BPEL_ACTIVITY_RECOVERY (ID bigint generated by default as identity, ACTIONS varchar(255), ACTIVITY_ID bigint, CHANNEL varchar(255), DATE_TIME timestamp, DETAILS clob, INSTANCE_ID bigint, REASON varchar(255), RETRIES integer, primary key (ID)) ERROR - CoreMessageLogger_$logger.error(3573) | Table "BPEL_ACTIVITY_RECOVERY" already exists; SQL statement: create table BPEL_ACTIVITY_RECOVERY (ID bigint generated by default as identity, ACTIONS varchar(255), ACTIVITY_ID bigint, CHANNEL varchar(255), DATE_TIME timestamp, DETAILS clob, INSTANCE_ID bigint, REASON varchar(255), RETRIES integer, primary key (ID)) [42101-124] ERROR - CoreMessageLogger_$logger.unsuccessfulCreate(2374) | HHH00389:Unsuccessful: create table BPEL_CORRELATION_SET (CORRELATION_SET_ID bigint generated by default as identity, CORRELATION_KEY varchar(255), NAME varchar(255), SCOPE_ID bigint, primary key (CORRELATION_SET_ID)) ERROR - CoreMessageLogger_$logger.error(3573) | Table "BPEL_CORRELATION_SET" already exists; SQL statement: create table BPEL_CORRELATION_SET (CORRELATION_SET_ID bigint generated by default as identity, CORRELATION_KEY varchar(255), NAME varchar(255), SCOPE_ID bigint, primary key (CORRELATION_SET_ID)) [42101-124] ERROR - CoreMessageLogger_$logger.unsuccessfulCreate(2374) | HHH00389:Unsuccessful: create table BPEL_CORRELATOR (CORRELATOR_ID bigint generated by default as identity, CORRELATOR_KEY varchar(255), PROC_ID bigint, primary key (CORRELATOR_ID)) ERROR - CoreMessageLogger_$logger.error(3573) | Table "BPEL_CORRELATOR" already exists; SQL statement: create table BPEL_CORRELATOR (CORRELATOR_ID bigint generated by default as identity, CORRELATOR_KEY varchar(255), PROC_ID bigint, primary key (CORRELATOR_ID)) [42101-124] ERROR - CoreMessageLogger_$logger.unsuccessfulCreate(2374) | HHH00389:Unsuccessful: create table BPEL_CORSET_PROP (ID bigint generated by default as identity, CORRSET_ID bigint, PROP_KEY varchar(255), PROP_VALUE varchar(255), primary key (ID)) -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira