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Marc Prud'hommeaux commented on OPENJPA-98: ------------------------------------------- I wonder what would happen if we replaced: return Class.forName(name, resolve, getClass().getClassLoader()); with: return super.loadClass(name, resolve); > Java deadlock when insert in t1 and find in t2 when using IBM JVM 1.5.0 > ----------------------------------------------------------------------- > > Key: OPENJPA-98 > URL: https://issues.apache.org/jira/browse/OPENJPA-98 > Project: OpenJPA > Issue Type: Bug > Environment: OpenJPA: > 0.9.6 > Java: > java version "1.5.0" > Java(TM) 2 Runtime Environment, Standard Edition (build pwi32dev-20061002a > (SR3) > ) > IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 Windows XP x86-32 > j9vmwi3223-2006100 > 1 (JIT enabled) > J9VM - 20060915_08260_lHdSMR > JIT - 20060908_1811_r8 > GC - 20060906_AA) > JCL - 20061002 > DB: > Derby 10.2.1.6 > Reporter: Vlad Tatavu > Assigned To: Kevin Sutter > Attachments: console.txt, javacore.20070109.114312.3868.zip, play.zip > > > I have a simple test program that uses OpenJPA 0.9.6 to insert an object into > a db in one transaction (t1) and retrieve it in another transaction (t2). > The program hangs in 30-50% of the executions right before the call to > entitymanager.find() (used to retrieve the object in t2). I'm using OpenJPA > runtime enhancement. > By looking at the JVM dump, I can see the following deadlock: > 1LKDEADLOCK Deadlock detected !!! > NULL --------------------- > NULL > 2LKDEADLOCKTHR Thread "main" (0x0015EC00) > 3LKDEADLOCKWTR is waiting for: > 4LKDEADLOCKMON sys_mon_t:0x41E40548 infl_mon_t: 0x41E40588: > 4LKDEADLOCKOBJ java/lang/[EMAIL PROTECTED]/00D4101C: > 3LKDEADLOCKOWN which is owned by: > 2LKDEADLOCKTHR Thread "Finalizer thread" (0x41B36200) > 3LKDEADLOCKWTR which is waiting for: > 4LKDEADLOCKMON sys_mon_t:0x0035CD38 infl_mon_t: 0x0035CD78: > 4LKDEADLOCKOBJ sun/misc/[EMAIL PROTECTED]/00D4E5BC: > 3LKDEADLOCKOWN which is owned by: > 2LKDEADLOCKTHR Thread "main" (0x0015EC00) -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://issues.apache.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira