Thank you very much alex.guizar(a)jboss.com . I thought that it was a problem of configuration because when the Jboss server starts, there is a problem: | 2007-12-20 09:33:11,375 DEBUG [org.hibernate.util.JDBCExceptionReporter] could not execute query [select job0_.ID_ as ID1_26_, job0_.VERSION_ as VERSION3_26_, job0_.DUEDATE_ as DUEDATE4_26_, job0_.PROCESSINSTANCE_ as PROCESSI5_26_, job0_.TOKEN_ as TOKEN6_26_, job0_.TASKINSTANCE_ as TASKINST7_26_, job0_.ISSUSPENDED_ as ISSUSPEN8_26_, job0_.ISEXCLUSIVE_ as ISEXCLUS9_26_, job0_.LOCKOWNER_ as LOCKOWNER10_26_, job0_.LOCKTIME_ as LOCKTIME11_26_, job0_.EXCEPTION_ as EXCEPTION12_26_, job0_.RETRIES_ as RETRIES13_26_, job0_.NAME_ as NAME14_26_, job0_.REPEAT_ as REPEAT15_26_, job0_.TRANSITIONNAME_ as TRANSIT16_26_, job0_.ACTION_ as ACTION17_26_, job0_.GRAPHELEMENTTYPE_ as GRAPHEL18_26_, job0_.GRAPHELEMENT_ as GRAPHEL19_26_, job0_.NODE_ as NODE20_26_, job0_.CLASS_ as CLASS2_26_ from JBPM_JOB job0_ where (job0_.LOCKOWNER_ is null or job0_.LOCKOWNER_=?) and job0_.RETRIES_>0 and job0_.DUEDATE_<=? and job0_.ISSUSPENDED_<>1 order by job0_.DUEDATE_ asc] | java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '1 job0_.ID_ as ID1_26_, job0_.VERSION_ as VERSION3_26_, job0_.DUEDATE_ as DUEDAT' at line 1 | at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2975) | at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1600) | at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1695) | at com.mysql.jdbc.Connection.execSQL(Connection.java:3026) | at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1137) | at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1231) | at org.jboss.resource.adapter.jdbc.CachedPreparedStatement.executeQuery(CachedPreparedStatement.java:90) | at org.jboss.resource.adapter.jdbc.WrappedPreparedStatement.executeQuery(WrappedPreparedStatement.java:236) | at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:186) | at org.hibernate.loader.Loader.getResultSet(Loader.java:1669) | at org.hibernate.loader.Loader.doQuery(Loader.java:662) | at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224) | at org.hibernate.loader.Loader.doList(Loader.java:2145) | at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2029) | at org.hibernate.loader.Loader.list(Loader.java:2024) | at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:392) | at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:333) | at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:172) | at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1114) | at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79) | at org.hibernate.impl.AbstractQueryImpl.uniqueResult(AbstractQueryImpl.java:756) | at org.jbpm.db.JobSession.getFirstAcquirableJob(JobSession.java:40) | at org.jbpm.job.executor.JobExecutorThread.acquireJobs(JobExecutorThread.java:114) | at org.jbpm.job.executor.JobExecutorThread.run(JobExecutorThread.java:58) | 2007-12-20 09:33:11,375 WARN [org.hibernate.util.JDBCExceptionReporter] SQL Error: 1064, SQLState: 42000 | 2007-12-20 09:33:11,375 ERROR [org.hibernate.util.JDBCExceptionReporter] You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '1 job0_.ID_ as ID1_26_, job0_.VERSION_ as VERSION3_26_, job0_.DUEDATE_ as DUEDAT' at line 1 | 2007-12-20 09:33:11,375 ERROR [org.jbpm.db.JobSession] org.hibernate.exception.SQLGrammarException: could not execute query | 2007-12-20 09:33:11,375 DEBUG [org.jbpm.JbpmContext] closing jbpmContext org.jbpm.JbpmContext@13bcbc8 | 2007-12-20 09:33:11,375 DEBUG [org.jbpm.svc.Services] closing service 'persistence': org.jbpm.persistence.db.DbPersistenceService@1a17727 | 2007-12-20 09:33:11,375 DEBUG [org.jbpm.persistence.db.DbPersistenceService] committing hibernate transaction org.hibernate.transaction.JDBCTransaction@1712a80 | 2007-12-20 09:33:11,375 DEBUG [org.hibernate.transaction.JDBCTransaction] commit | 2007-12-20 09:33:11,375 DEBUG [org.hibernate.transaction.JDBCTransaction] re-enabling autocommit | 2007-12-20 09:33:11,375 DEBUG [org.hibernate.transaction.JDBCTransaction] committed JDBC Connection | 2007-12-20 09:33:11,375 DEBUG [org.hibernate.jdbc.ConnectionManager] aggressively releasing JDBC connection | 2007-12-20 09:33:11,375 DEBUG [org.hibernate.jdbc.ConnectionManager] releasing JDBC connection [ (open PreparedStatements: 0, globally: 0) (open ResultSets: 0, globally: 0)] | 2007-12-20 09:33:11,375 DEBUG [org.jbpm.persistence.db.DbPersistenceService] closing hibernate session | 2007-12-20 09:33:11,375 DEBUG [org.jbpm.svc.Services] closing service 'tx': org.jbpm.tx.TxService@195bbec | 2007-12-20 09:33:11,375 ERROR [org.jbpm.job.executor.JobExecutorThread] exception in job executor thread. waiting 640000 milliseconds | org.jbpm.JbpmException: couldn't get acquirable jobs | at org.jbpm.db.JobSession.getFirstAcquirableJob(JobSession.java:44) | at org.jbpm.job.executor.JobExecutorThread.acquireJobs(JobExecutorThread.java:114) | at org.jbpm.job.executor.JobExecutorThread.run(JobExecutorThread.java:58) | Caused by: org.hibernate.exception.SQLGrammarException: could not execute query | at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:67) | at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43) | at org.hibernate.loader.Loader.doList(Loader.java:2148) | at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2029) | at org.hibernate.loader.Loader.list(Loader.java:2024) | at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:392) | at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:333) | at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:172) | at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1114) | at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79) | at org.hibernate.impl.AbstractQueryImpl.uniqueResult(AbstractQueryImpl.java:756) | at org.jbpm.db.JobSession.getFirstAcquirableJob(JobSession.java:40) | ... 2 more | Caused by: java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '1 job0_.ID_ as ID1_26_, job0_.VERSION_ as VERSION3_26_, job0_.DUEDATE_ as DUEDAT' at line 1 | at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2975) | at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1600) | at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1695) | at com.mysql.jdbc.Connection.execSQL(Connection.java:3026) | at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1137) | at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1231) | at org.jboss.resource.adapter.jdbc.CachedPreparedStatement.executeQuery(CachedPreparedStatement.java:90) | at org.jboss.resource.adapter.jdbc.WrappedPreparedStatement.executeQuery(WrappedPreparedStatement.java:236) | at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:186) | at org.hibernate.loader.Loader.getResultSet(Loader.java:1669) | at org.hibernate.loader.Loader.doQuery(Loader.java:662) | at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224) | at org.hibernate.loader.Loader.doList(Loader.java:2145) | ... 11 more | Any idea of that? I want Jboss jbpm works with MySQL and I made changes following http://wiki.jboss.org/wiki/Wiki.jsp?page=SetUpMysqlAsDefaultDS and I changed the hibernate configurations files to get that, but ... when the server starts this uses HSQL dialect, no MySQLDialect. :( And ... I think that because of this problem ... I can't enter into Jboss jBPM web console (http://localhost:8080/jbpm-console) with the default users. Thanks in advance Regrads, View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4114527#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...