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List:       jboss-user
Subject:    Re: [JBoss-user] Advice wanted for tracking Deadlocks
From:       Bill Burke <bill () jboss ! org>
Date:       2003-08-29 21:35:45
[Download RAW message or body]

EntityLockMonitor won't help you then.  JBoss CMP and BMP should try to 
update beans in the order that they are accessed.  Also not that any 
finder calls within a transaction will cause a synchronization events of 
all beans changed within transaction.

Bill

Jonathan.O'Connor@xcom.de wrote:

> Bill,
> Sadly, I'm getting DB deadlocks. Sometimes they freeze the whole system, 
> and other times they don't. I'll have a look at the entity lock monitor. 
> Sounds good.
> Thanks,
> Jonathan O'Connor
> 
> 
> 
> 
> 
> Bill Burke <bill@jboss.org>
> Sent by: jboss-user-admin@lists.sourceforge.net
> 29.08.2003 17:57
> Please respond to jboss-user
> 
>  
>         To:     jboss-user@lists.sourceforge.net
>         cc: 
>         Subject:        Re: [JBoss-user] Advice wanted for tracking Deadlocks
> 
> 
> I don't remember, but I think my EntityLockMonitor is in 3.0.6. 
> Uncomment this MBean within server/<your-config>/conf/jboss-service.xml
> 
> It has a number of utilities for debugging deadlocks.  See our for-pay 
> doco for more info.
> 
> Are you getting DB deadlocks or JBoss deadlocks?
> 
> Bill
> 
> Jonathan.O'Connor@xcom.de wrote:
> 
> 
>>I just started stress testing our JBoss server. I run our unit tests 
>>simultaneously in two different windows. However, I'm getting a number 
> 
> of 
> 
>>deadlocks occurring in both Entity Bean creation and removal.
>>Does anyone have any bright ideas how I can track down the problem?
>>In case its relevant, JBoss version is 3.0.6 and I'm connected to a 
> 
> Sybase 
> 
>>ASE 12.0 DB using JConnect 5.5 JDBC driver.
>>
>>Ciao,
>>Jonathan O'Connor
>>XCOM Dublin
>>
>>
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>>
> 
> 

-- 
================
Bill Burke
Chief Architect
JBoss Group LLC.
================



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