[OJB-developers] Concurrent access not posible with 0.7.325 in C/S mode
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[OJB-developers] Concurrent access not posible with 0.7.325 in C/S mode
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From: <ri...@ya...> - 2002-02-04 07:45:34
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Thomas,
I have just downloaded the new 0.7.325 distribution, and I hoped it =
would make C/S mode work...
But it doesn't, I'm still getting Exceptions when two threads try to =
access the repository (read) at the same time.
This is the new stack trace:
-------------------------------------------------------------------------=
-----
[ODMG] ERROR: Caught EOFException while reading the stream header
Caught EOFException while reading the stream header
at =
ojb.broker.server.PersistenceBrokerClient.callServer(PersistenceBroke
rClient.java:115)
at =
ojb.broker.server.PersistenceBrokerClient.callServer(PersistenceBroke
rClient.java:55)
at =
ojb.broker.server.PersistenceBrokerClient.beginTransaction(Persistenc
eBrokerClient.java:160)
at ojb.odmg.oql.OQLQueryImpl.execute(OQLQueryImpl.java:225)
at =
charlie.ojb.ProyectoManagerOJB.getEmpleado(ProyectoManagerOJB.java:39
0)
at charlie.web.LogonAction.perform(LogonAction.java:49)
at =
org.apache.struts.action.ActionServlet.processActionPerform(ActionSer
vlet.java:1786)
at =
org.apache.struts.action.ActionServlet.process(ActionServlet.java:158
5)
at =
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:509)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at =
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
icationFilterChain.java:247)
at =
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
ilterChain.java:193)
at =
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV
alve.java:243)
at =
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline
.java:566)
at =
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:472)
at =
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at =
org.apache.catalina.core.StandardContextValve.invoke(StandardContextV
alve.java:201)
at =
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline
.java:566)
at =
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:472)
at =
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at =
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:
2344)
at =
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j
ava:164)
at =
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline
.java:566)
at =
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatche
rValve.java:170)
at =
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline
.java:564)
at =
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j
ava:170)
at =
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline
.java:564)
at =
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:
462)
at =
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline
.java:564)
at =
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:472)
at =
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at =
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal
ve.java:163)
at =
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline
.java:566)
at =
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:472)
at =
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at =
org.apache.catalina.connector.http.HttpProcessor.process(HttpProcesso
r.java:1011)
at =
org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.ja
va:1106)
at java.lang.Thread.run(Unknown Source)
-------------------------------------------------------------------------=
-----
***
I usually get this stack trace the first time I try to access =
concurrently.
From then on, I get this stack trace:
-------------------------------------------------------------------------=
-----
[ODMG] ERROR: null
org.odmg.TransactionInProgressException
<<no stack trace available>>
org.odmg.QueryException
at ojb.odmg.oql.OQLQueryImpl.execute(OQLQueryImpl.java:250)
at =
charlie.ojb.ProyectoManagerOJB.getEmpleado(ProyectoManagerOJB.java:39
0)
at charlie.web.LogonAction.perform(LogonAction.java:49)
at =
org.apache.struts.action.ActionServlet.processActionPerform(ActionSer
vlet.java:1786)
at =
org.apache.struts.action.ActionServlet.process(ActionServlet.java:158
5)
at =
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:509)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at =
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
icationFilterChain.java:247)
at =
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
ilterChain.java:193)
at =
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV
alve.java:243)
at =
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline
.java:566)
at =
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:472)
at =
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at =
org.apache.catalina.core.StandardContextValve.invoke(StandardContextV
alve.java:201)
at =
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline
.java:566)
at =
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:472)
at =
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at =
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:
2344)
at =
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j
ava:164)
at =
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline
.java:566)
at =
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatche
rValve.java:170)
at =
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline
.java:564)
at =
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j
ava:170)
at =
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline
.java:564)
at =
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:
462)
at =
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline
.java:564)
at =
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:472)
at =
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at =
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal
ve.java:163)
at =
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline
.java:566)
at =
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:472)
at =
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at =
org.apache.catalina.connector.http.HttpProcessor.process(HttpProcesso
r.java:1011)
at =
org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.ja
va:1106)
at java.lang.Thread.run(Unknown Source)
-------------------------------------------------------------------------=
-----
Please help me make OJB work in a multithreading scenario (website: =
Struts + JDO). I need to deploy these week, but if I can't make the =
persistance layer work in a multithreading scenario, I'll have to code =
everything in JDBC again... and you know, that's incredibly fun!
Thanks in advance
Ricardo Arguello
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