> - sequence manager, which implementation?
SequenceManagerHighLowImpl (I know that you don't suggest it with JBoss, but the failure scenario you mentioned a few week ago didn't see to apply (where a rollback causes problems). I plan to move towards dbms-generated sequences, but one step at a time...
> - exhausted DataSource pool (db-connection pool, jboss)?
I use default settings for the OracleDS, should this be changed in oracle-service.xml?
Phil
Armin Waibel wrote:
Hi Phil,
sounds like a deadlock.
But first a few pointers to help me in my investigation would be very welcome
- sequence manager, which implementation? - exhausted DataSource pool (db-connection pool, jboss)?
regards, Armin ----- Original Message ----- From: "Phil Warrick" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, June 25, 2003 4:46 PM Subject: [jBoss] multiuser problems
Hi all,
I have a j2ee client app that talks to the database via jboss and ojb. This app works fine when there is only one client talking to jboss at
a
time. It even works fine when I create several pseudo-clients in the same app running separate connections in their own threads (similar to the ojb ejb stress tests). However when I run this test with two separate client machines, each writing to completely different sets of objects, things silently hang in jBoss, and I cannot make any further remote calls. Note that there should not be a problem of simultaneous access to the same persistent object. I need to restart jBoss to be
up
again.
I realize that I am only giving a general description of the problem, and I intend to investigate further so that I have (hopefully) some stack traces instead of silent death. But first a few pointers to
help
me in my investigation would be very welcome.
First my setup is the following: WinNT - jBoss 3.0.6 - ojb1.0rc2 - Oracle 8.1.6
I've held off moving up to rc3/4 due to the myriad of sequence
problems
that I and numerous other Oracle users experienced with rc3. I'm willing to roll up my sleeves and move to rc4 if required (is it possible that this is a bug that has been address recently -- I don't see any bug reports quite like this). Hopefully the sequence problems have been addressed by now?
This is the last leg of a long journey to go into production with ojb and add another "success story" to the list.
Thanks,
Phil
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