I have used H2 as DB in ODE experimental branch (2.0) with OpenJPA. I did replace the default Derby by H2, for that I patched the il-common/src/main/java/org/apache/ode/il/dbutil/Database.java
I also used ";MVCC=TRUE" parameter as well. Thanks, Waruna On 14 July 2010 21:55, Les Spivey <[email protected]> wrote: > I tried MVCC=TRUE and, if anything, it was worse. JMeter output is > attached. After 15 or 20 successful executions the console fills with the > exceptions below. I also should note that I am logging events - > <process-events generate="all"/>. However, this does work using MySQL as an > external database instead of Derby or H2, but a pure Java database would be > desirable. > > Thanks for your continued suggestions. > > > -----Original Message----- > From: Rafal Rusin [mailto:[email protected]] > Sent: Wednesday, July 14, 2010 2:58 AM > To: [email protected] > Subject: Re: h2 as internal database > > On Tue, Jul 13, 2010 at 11:58 PM, Les Spivey <[email protected]> > wrote: > > I tried using a recent snapshot of Ode 1.3.5 in Tomcat 5.5 using the > instructions for H2 and Hibernate here: > http://ode.apache.org/ode-schema.html. My ode-axis2.properties are: > > > > ode-axis2.db.pool.min=20 > > ode-axis2.db.pool.max=200 > > ode-axis2.threads.pool.size=200 > > #ode-axis2.threads.pool.size=1 > > > > > ode-axis2.dao.factory=org.apache.ode.daohib.bpel.BpelDAOConnectionFactoryImpl > > ode-axis2.db.mode=INTERNAL > > > ode-axis2.db.int.jdbcurl=jdbc:h2:file:C:/Progra~1/Tomcat_5_5/webapps/ode/WEB-INF/h2db/ode-db;DB_CLOSE_ON_EXIT=false;user=sa > > ode-axis2.db.int.driver=org.h2.Driver > > hibernate.dialect=org.hibernate.dialect.H2Dialect > > ode-axis2.acquireTransactionLocks=true > > > > Using the Ode HelloWorld2 example, if I start a single thread in JMeter > to access the service it works fine. However, if I try multiple threads > hitting the service (say 20) I almost immediately get the exception that > follows. This is similar to what I see with Derby under the same > conditions. Do either Derby or H2 actually work when the > ode-axis2.threads.pool.size is greater than one? > > This is good question :-) > Currently it doesn't. > But as Veresh said, this could be improved I guess. In theory H2 > supports MVCC by MVCC=TRUE. In practice, it's untested. > So I guess you can try to comment out acquireTransactionLocks and set > MVCC=TRUE. Then please provide your output from JMeter. > > > > > > > 14:45:07,697 WARN [GeronimoConnectionEventListener] > connectionErrorOccurred called with null > > org.h2.jdbc.JdbcSQLException: Timeout trying to lock table "ODE_JOB"; SQL > statement: > > insert into ODE_JOB (jobid, nodeid, ts, scheduled, transacted, > instanceId,mexId,processId,type,channel,correlatorId,correlationKeyS > > et,retryCount,inMem,detailsExt) values(?, ?, ?, ?, ?,?,?,?,?,?,?,?,?,?,?) > [50200-137] > > at > org.h2.message.DbException.getJdbcSQLException(DbException.java:327) > > at org.h2.message.DbException.get(DbException.java:167) > > at org.h2.message.DbException.get(DbException.java:144) > > at org.h2.table.RegularTable.doLock(RegularTable.java:466) > > at org.h2.table.RegularTable.lock(RegularTable.java:404) > > at org.h2.command.dml.Insert.insertRows(Insert.java:119) > > at org.h2.command.dml.Insert.update(Insert.java:82) > > at > org.h2.command.CommandContainer.update(CommandContainer.java:70) > > at org.h2.command.Command.executeUpdate(Command.java:199) > > at > org.h2.jdbc.JdbcPreparedStatement.executeUpdateInternal(JdbcPreparedStatement.java:141) > > at > org.h2.jdbc.JdbcPreparedStatement.executeUpdate(JdbcPreparedStatement.java:127) > > at > org.tranql.connector.jdbc.PreparedStatementHandle.executeUpdate(PreparedStatementHandle.java:103) > > at > org.apache.ode.scheduler.simple.JdbcDelegate.insertJob(JdbcDelegate.java:229) > > at > org.apache.ode.scheduler.simple.SimpleScheduler.schedulePersistedJob(SimpleScheduler.java:378) > > at > org.apache.ode.scheduler.simple.SimpleScheduler.schedulePersistedJob(SimpleScheduler.java:354) > > at > org.apache.ode.bpel.engine.MyRoleMessageExchangeImpl.invoke(MyRoleMessageExchangeImpl.java:154) > > at > org.apache.ode.axis2.ODEService.onAxisMessageExchange(ODEService.java:126) > > at > org.apache.ode.axis2.hooks.ODEMessageReceiver.invokeBusinessLogic(ODEMessageReceiver.java:69) > > at > org.apache.ode.axis2.hooks.ODEMessageReceiver.invokeBusinessLogic(ODEMessageReceiver.java:52) > > at > org.apache.axis2.receivers.AbstractMessageReceiver.receive(AbstractMessageReceiver.java:114) > > at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:173) > > at > org.apache.axis2.transport.http.HTTPTransportUtils.processHTTPPostRequest(HTTPTransportUtils.java:167) > > at > org.apache.axis2.transport.http.AxisServlet.doPost(AxisServlet.java:142) > > at javax.servlet.http.HttpServlet.service(HttpServlet.java:647) > > at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) > > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269) > > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188) > > at > org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) > > at > org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172) > > at > org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) > > at > org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117) > > at > org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108) > > at > org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174) > > at > org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:837) > > at > org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:640) > > at > org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1287) > > at java.lang.Thread.run(Unknown Source) > > 14:45:07,806 ERROR [SimpleScheduler] Database error. > > org.apache.ode.scheduler.simple.DatabaseException: > org.h2.jdbc.JdbcSQLException: Timeout trying to lock table "ODE_JOB"; SQL > stateme > > nt: > > insert into ODE_JOB (jobid, nodeid, ts, scheduled, transacted, > instanceId,mexId,processId,type,channel,correlatorId,correlationKeyS > > et,retryCount,inMem,detailsExt) values(?, ?, ?, ?, ?,?,?,?,?,?,?,?,?,?,?) > [50200-137] > > at > org.apache.ode.scheduler.simple.JdbcDelegate.insertJob(JdbcDelegate.java:231) > > at > org.apache.ode.scheduler.simple.SimpleScheduler.schedulePersistedJob(SimpleScheduler.java:378) > > at > org.apache.ode.scheduler.simple.SimpleScheduler.schedulePersistedJob(SimpleScheduler.java:354) > > at > org.apache.ode.bpel.engine.MyRoleMessageExchangeImpl.invoke(MyRoleMessageExchangeImpl.java:154) > > at > org.apache.ode.axis2.ODEService.onAxisMessageExchange(ODEService.java:126) > > at > org.apache.ode.axis2.hooks.ODEMessageReceiver.invokeBusinessLogic(ODEMessageReceiver.java:69) > > at > org.apache.ode.axis2.hooks.ODEMessageReceiver.invokeBusinessLogic(ODEMessageReceiver.java:52) > > > > > > > > > > -----Original Message----- > > From: Rafal Rusin [mailto:[email protected]] > > Sent: Wednesday, July 07, 2010 2:12 PM > > To: [email protected] > > Subject: Re: h2 as internal database > > > > In order to get rid of deadlocks in H2, you need to grab latest ODE > > snapshot and add > > ode.acquireTransactionLocks=true > > to ode-axis2.properties. > > It's needed, because H2 uses poor locking mechanism. > > I tried H2 with Hibernate and it worked well. > > > > On Wed, Jul 7, 2010 at 8:27 PM, Les Spivey <[email protected]> > wrote: > >> The Ode documentation here > >> http://ode.apache.org/ode-jbi-and-axis2-properties-overview.html shows > >> how to setup an internal database other than Derby using > >> "ode-axis2.db.mode=INTERNAL". Has anyone done this with H2? I've tried > >> and it appears to work until there is any kind of load then I get > >> "org.apache.openjpa.persistence.PersistenceException: Deadlock detected" > >> exceptions. ode-axis2.threads.pool.size is set to 200. > >> > >> > >> > >> I've seen examples with H2 as an external database using Hibernate but I > >> cannot use Hibernate because of the license. Also, I'm using Jetty and > >> not Tomcat. Any suggestions? > >> > >> > >> > >> Thanks, Les. > >> > >> > > > > -- > > Regards, > > Rafał Rusin > > http://rrusin.blogspot.com > > -- > Regards, > Rafał Rusin > http://rrusin.blogspot.com > -- ----------------------------------------------------- Regards, Waruna Ranasinghe mob: 0724318285 blog: http://warunapw.blogspot.com twitter: http://twitter.com/warunapww http://lk.linkedin.com/in/waruna www.facebook.com/waruna.ranasinghe
