I think this may help us out a lot!
You've got the right idea - a custom node sends off an async request to our
central application and waits. Some time later, our jBPM app receives the
results of that request, then creates a new jbpmContext, loads the token,
signals it, and closes the
Greetings -
We are plagued with StaleObjectStateExceptions that I have been unable to
resolve. We are running jBPM (derived from version 3.1.2) in an application
which launches and manages our workflows and also executes commands targetting
specific workflow instances (for example, a signal
OK, I searched through JIRA.
I found two fixes that seem related to other problems we are having, but
nothing that directly addresses this problem with the join node.
In 3.2/3.3 a token entering a join locks its parent node. There's a lot of
discussion about this and it seems relevant, but in
Greetings. We are trying to diagnose an intermittent problem: while one branch
of a Fork is in a wait state, the other branch's child token continues through
the join and continues executing subsequent process steps.
| Fork
| / \
| TaskProcess Step
|
anonymous wrote : Are 1,2 and 3 valid for all DBMS you use? Would be great if
you could confirm that.
Definitely Oracle and Sybase, don't have much experience with MSSql yet.
anonymous wrote : And maybe also what the default locking mechanisms are on
specific database.
Defaults:
Oracle -
bestage:
anonymous wrote : How do you re-use the jBPM component in multiple
applications? Are you distributing a jar and use a central jbpm db for the
tables? This is what I am planning to do in one of my projects. But I was also
thinking about the possible deadlock issues.
Yes, this is the
kukeltje:
anonymous wrote : - Would be great if you could elaborate a little on the way
creating the indexes impacted performance more than just the delete (thankfully
it was not the coroner you had to call ;-))
(1) When we start up the jBPM java app, we load information about all the
Greetings.
Is anyone aware of any tools for analyzing, repairing, etc. the jBPM database?
For example,
- performing regular maintenance tasks like purging the database of process
instances that ended over 1 year ago.
- identifying and fixing a data integrity constraint error.
Thanx.
View
Yes, I have already written a number of these one-trick ponies to solve
specific problems. We're more interested in diagnosing database issues.
We are pushing jBPM very hard, running multiple processing threads within a
java app as well as multiple distributed java apps. (We have a client that
Well, to make things even more fun we support three db platforms: Sybase,
Oracle, and SqlServer.
First off, almost all of the deadlock problems were cured after indexing the
JBPM tables on all the foreign key columns. (We almost had to call the
paramedics for the DBA when we told him we were
Greetings. We are seeing a huge slowdown in jBPM throughput when the JBPM_LOG
file gets very large.
For example, during our benchmark testing we start with a virgin database.
After three weeks of testing, we see a ~40% increase in workflow execution
time. At this point, the JBPM_LOG table has
An HQL delete query will not resolve Foreign Key dependencies (according to
Hibernate docs). Since JBPM_LOG has FK's to itself for parent logs, I don't
think that an HQL query will work. :(
Please tell me I'm wrong :)
View the original post :
Greetings:
We need to periodically purge process instances that have ended before a
certain data. There may be hundreds or thousands of instances that need to be
cleaned up. The performance is very poor ... about 8 - 10 seconds PER INSTANCE.
Looking at the code (jBPM 3.1.2) I notice two
The source of the cannot deserialize errors has been found (not related to
this issue).
However, I suspect we are seeing performance issues related to the row limit
being exceeded.
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Reply to the
Greetings. Is it possible to control which log types are actually written to
the log table? For example, can I turn off variable update log entries and
keep all the other log entry types ??
Thanx.
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Greetings. The default installation of Sybase 12.x has a row size limit of
roughly 1700 bytes ... which is exceded by a number of JBPM tables.
Has anyone developed a workaround for this problem?
I am getting some random cannot deserialize ... errors, which I think are
related to the row size
Same problem is ocurring in 3.1.4
This was mentioned in the release notes, but I am still seeing this problem.
Here is the stack trace:
| 07 Feb 2007 13:44:56:TPM Engine(ProcessCommand):(404832/T5_2_Credit
Checks) Signal failed: Unknown entity: java.lang.St
| ring
| 07 Feb 2007
Hello, all. The 3.1.4 starters kit ships with hibernate 3.1
Do you recommend upgrading to hibernate 3.2 (the current verison, I believe, is
3.2.2) ?
Thanx.
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Reply to the post :
Yes, for most databases the jdbc driver is included in the xxx/lib directory,
where xxx is the database name, e.g. sybase.
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Reply to the post :
Greetings. In the version 3.1.3 starters kit, MSSQL uses the jtds 1.2 jar file,
and Sybase uses the jdts 1.1 jar file.
Is there some problem with Sybase and the newer driver, or is this an oversight?
Thanx.
View the original post :
Glad I could help :)
I am testing Sybase with the new (V 1.2) jtds driver, and so far no problems.
If anyone has experience with this, please chime in.
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Reply to the post :
Greetings. After upgrading from v3.1.2 to v3.1.3, I started getting hibernate
errors in code that has worked for months.
The exact exception thrown varies slightlly, but they all have this in common:
First, there is Unknown entity: java.lang.String, and then shortly after
error in persistence
The conditional expression must be written in the jBPM Expression Language,
not as a BeanShell (java) snippet as you are doing. See the documentation on
decision nodes.
There have been a number of examples posted in this forum.
View the original post :
Off the top of my head
| public Vector processState(ProcessInstance pin) {
|Vector v = new Vector();
|Token root = pin.getRootToken();
|v.add(root.getNode().getName();
|childStates(root, v);
|return v;
| }
|
| public void childStates(Token token,
Done: http://jira.jboss.com/jira/browse/JBPM-761
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Greetings. In order to run multiple instances of our application on the same
box, we typically qualify configuration files with the database and server that
we are connecting to.
I would like to start jBPM with database.server.jbpm.cfg.xml as the
configuration file. In my main program, which
Greetings. We are running JBPM as a stand-alone Java application to handle the
workflow requirements of our system. We would like to run multiple instances of
the JBPM engine, and assign each process definition to run on a specific JBPM
engine.
We assume there will be no Hibernate caching
Our bigger clients will easily exceed that 100,000 transactions per day
benchmark, so we are looking at ways to increase capacity. One strategy is to
partition the process definitions across multiple BPM engines.
View the original post :
The database is Sybase 12.5
The sequence numbers continue from 500x, incrementing by 1 for each
new object.
I did not do any special configuration for hibernate, other than the commands
generated by the jbpm-db scripts.
BTW, what happens when the id numbers roll over?
Thx.
View
Greetings. For security reasons, our DBA will not allow the JBPM JDBC
connection with dba privileges.
From the JbpmOnOracle document, it says
| drop user jbpm cascade ;
|
| create user jbpm identified by jbpm ;
|
| grant connect, resource, dba to jbpm ;
|
and indeed, it does
My thoughts exactly, except that without the dba role I get this error when
launching a process instance:
| 14:31:22,644 ERROR JDBCExceptionReporter : ORA-00942: table or view does
not exist
|
| 14:31:22,659 ERROR ProcessCommand : WORKFLOW_JBPM_LAUNCH_PROCESS couldn't
assign id to
Yes, setting it at run time does work.
I am working around the problem by setting the priority that I need in the task
assignment handler.
However, having the priority correctly assigned when the task instance is
created would be nicer.
View the original post :
The JIRA issue for this is marked as closed, but it is STILL a problem.
(http://jira.jboss.com/jira/browse/JBPM-325)
The priority assigned to the task in the process definition is not propagated
to the task instance.
If we look at the hibernate cfg for task ...
| ?xml version=1.0?
|
|
Currently using 3.1, but I hope to migrate to 3.1.2 in the next few weeks.
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Greetings. As part of our application, I need to display all running process
instances. I originally wrote some code to get all definitions
(GraphSession.findAllProcessDefinitions()) and then, for each definition get
the process instances (GraphSession.findProcessInstances(defnId)). It does
Thanks, that did it.
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