2 Replies Latest reply on Jan 9, 2013 8:32 AM by maxur

Drools/Guvnor and MySQL - error 400 and 500

maxur Jan 7, 2013 9:16 AM

Hi,

I have following issue while opening localhost:8080/drools-guvnor/. Page is shown, but after 1-2 seconds I get errors:

400 Sorry, a techincal error occured. Please contact a system administrator

500 The call failed on the server; see server log for details

[IMG]http://i50.tinypic.com/309opxd.jpg[/IMG]

The issue occured when I switched repository to mySQL. I generated repository.xml (Administration -> Repository Configuration) with this:

Driver: com.mysql.jdbc.Driver

URL: jdbc:mysql://localhost:3306/guvnorRep

User: <created user and table in DB>...

Password: -||-

I deleted repository folder and restared everything a few times. I'm working on a jBPM 5.4, but I have same problem on version 5.3. I connected jBPM with mySQL so driver and database is OK.

In Administration -> Event Log I get this:

Service method 'public abstract java.lang.String[] org.drools.guvnor.client.rpc.RepositoryService.listStates() throws com.google.gwt.user.client.rpc.SerializationException' threw an unexpected exception: org.jboss.weld.exceptions.WeldException: WELD-000049 Unable to invoke [method] @PostConstruct public org.drools.guvnor.server.repository.RepositoryStartupService.create() on org.drools.guvnor.server.repository.ProductionRepositoryStartupService@1cd6432 WELD-000049 Unable to invoke [method] @PostConstruct public org.drools.guvnor.server.repository.RepositoryStartupService.create() on org.drools.guvnor.server.repository.ProductionRepositoryStartupService@1cd6432

There are many topics and questions with similar problem but there is still no answer. Is there anything more to change in configuration files so that drools/mysql combination will work?

1. Re: Drools/Guvnor and MySQL - error 400 and 500

maxur Jan 7, 2013 10:25 AM (in response to maxur)

In addition:

In JBoss log there is this error:

ERROR [org.apache.jackrabbit.core.fs.db.DatabaseFileSystem] (http-localhost-127.0.0.1-8080-3) failed to initialize file system: javax.jcr.RepositoryException: Could not load JDBC driver class com.mysql.jdbc.Driver.

Driver is properly loaded for jBPM, why isn't here?
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2. Re: Drools/Guvnor and MySQL - error 400 and 500

maxur Jan 9, 2013 8:32 AM (in response to maxur)

After almost 4 days with this problem I found the solution:

1. Stop JBoss (ant stop.jboss)
2. Open drools-guvnor.war in ...\jbpm-installer\jboss-as-7.1.1.Final\standalone\deployments with 7zip
3. Open WEB-INF\lib
4. Drag and drop mySql connection driver into it and accept changes
5. Delete repository folder from ...\jbpm-repository\
5. Start JBOSS (ant start.jboss)
6. After few tries (while(notOpened) F5;) http://localhost:8080/drools-guvnor will open (without 400 and 500 errors)

In my jboss log there are still some errors:

ERROR [org.reflections.Reflections] (MSC service thread 1-5) could not create Vfs.Dir from url. ignoring the exception and continuing: org.reflections.ReflectionsException: could not create Dir using org.jboss.errai.bus.server.service.metadata.VFSUrlType from url vfs:/D:/jbpm/content/jbpm-gwt-console.war/WEB-INF/classes/

ERROR [org.hibernate.tool.hbm2ddl.SchemaUpdate] (MSC service thread 1-2) HHH000319: Could not get database metadata: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown table 'sequences' in information_schema

ERROR [org.hibernate.tool.hbm2ddl.SchemaUpdate] (MSC service thread 1-2) HHH000299: Could not complete schema update: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown table 'sequences' in information_schema

Although the 400/500 error is solved I'm still tring to figure out other exceptions so any help would be very useful.
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