Recurrent crashes of Jazz / Team concert (javacore) q

Hello,

Team concert cannot run more than some days before crashing !
What should I do ?

Thanks a lot in advance,

Denis

javacore file :

NULL ------------------------------------------------------------------------
0SECTION TITLE subcomponent dump routine
NULL ===============================
1TISIGINFO Dump Event "gpf" (00002000) received
1TIDATETIME Date: 2009/08/13 at 02:27:16
1TIFILENAME Javacore filename: /data/jazz/server/javacore.20090813.022716.32269.0003.txt
NULL ------------------------------------------------------------------------
0SECTION GPINFO subcomponent dump routine
NULL ================================
2XHOSLEVEL OS Level : Linux 2.6.16.60-0.21-default
2XHCPUS Processors -
3XHCPUARCH Architecture : amd64
3XHNUMCPUS How Many : 1
NULL
1XHEXCPCODE J9Generic_Signal_Number: 0000000000000004
1XHEXCPCODE Signal_Number: 000000000000000B
1XHEXCPCODE Error_Value: 0000000000000000
1XHEXCPCODE Signal_Code: 0000000000000001
1XHEXCPCODE Handler1: 00002AF647F53D80
1XHEXCPCODE Handler2: 00002AF6481A98B0
1XHEXCPCODE InaccessibleAddress: 0000000000000048
NULL
1XHEXCPMODULE Module: /data/jazz/server/jre/bin/libj9gc23.so
1XHEXCPMODULE Module_base_address: 00002AAAAB7D0000
NULL
1XHREGISTERS Registers:
2XHREGISTER RDI:000000000052B4D8
2XHREGISTER RSI:00002AAADBFF0618
2XHREGISTER RAX:0000000000000000
2XHREGISTER RBX:00002AAADBFF0618
2XHREGISTER RCX:00002AAAD867BDE0
2XHREGISTER RDX:00002AAAB2CAA1A8
2XHREGISTER R8:0000000200000000
2XHREGISTER R9:00002AAAB0C24308
2XHREGISTER R10:0000000000000001
2XHREGISTER R11:0000000208001000
2XHREGISTER R12:000000000052B4D8
2XHREGISTER R13:00000000413A8870
2XHREGISTER R14:0000000000000000
2XHREGISTER R15:000000000052B4D8
2XHREGISTER xmm0:0000000000000000
2XHREGISTER xmm1:0000000000000000
2XHREGISTER xmm2:0000000000000000
2XHREGISTER xmm3:0000000000000000
2XHREGISTER xmm4:00002AF648083560
2XHREGISTER xmm5:00002AAADA6CE2CC
2XHREGISTER xmm6:405919DB22D0E560
2XHREGISTER xmm7:405919DB22D0E560
2XHREGISTER xmm8:0000000000000000
2XHREGISTER xmm9:0000000000000000
2XHREGISTER xmm10:0000000000000000
2XHREGISTER xmm11:0000000000000000
2XHREGISTER xmm12:0000000000000000
2XHREGISTER xmm13:0000000000000000
2XHREGISTER xmm14:0000000000000000
2XHREGISTER xmm15:0000000000000000
2XHREGISTER RIP:00002AAAAB8014C3
2XHREGISTER GS:0006000000000000
2XHREGISTER FS:0000000600000000
2XHREGISTER RSP:00000000413A87A0
2XHREGISTER EFlags:0000000000010202
2XHREGISTER CS:0000000000000033
2XHREGISTER RBP:00002AAADBFF0850
2XHREGISTER ERR:0000000000000006
2XHREGISTER TRAPNO:000000000000000E
2XHREGISTER OLDMASK:0000000000000000
2XHREGISTER CR2:0000000000000048
NULL
1XHFLAGS VM flags:00020002
NULL
NULL ------------------------------------------------------------------------
0SECTION ENVINFO subcomponent dump routine
NULL =================================
1CIJAVAVERSION J2RE 5.0 IBM J9 2.3 Linux amd64-64 build j9vmxa6423ifx-20090423
1CIVMVERSION VM build 20090421_34076_LHdSMr
1CIJITVERSION JIT enabled - 20081112_1511ifx6_r8
1CIRUNNINGAS Running as a standalone JVM
1CICMDLINE /data/jazz/server/jre/bin/java -Djava.awt.headless=true -DSQLSERVER_JDBC=/data/jazz/server/sqlserver -DORACLE_JDBC=/data/jazz/server/
oracle -DDB2I_JDBC=/data/jazz/server/db2i -DDB2Z_JDBC=/data/jazz/server/db2z -Dorg.eclipse.emf.ecore.plugin.EcorePlugin.doNotLoadResourcesPlugin=tru
e -DJAZZ_HOME=file:///data/jazz/server/conf -Dcom.ibm.team.repository.tempDir=/tmp -Xmx700M -Djava.util.logging.manager=org.apache.juli.ClassLoaderL
ogManager -Djava.util.logging.config.file=/data/jazz/server/tomcat/conf/logging.properties -Djava.endorsed.dirs=/data/jazz/server/tomcat/common/endo
rsed -classpath :/data/jazz/server/tomcat/bin/bootstrap.jar:/data/jazz/server/tomcat/bin/commons-logging-api.jar -Dcatalina.base=/data/jazz/server/t
omcat -Dcatalina.home=/data/jazz/server/tomcat -Djava.io.tmpdir=/data/jazz/server/tomcat/temp org.apache.catalina.startup.Bootstrap start
1CIJAVAHOMEDIR Java Home Dir: /data/jazz/server/jre
1CIJAVADLLDIR Java DLL Dir: /data/jazz/server/jre/bin
1CISYSCP Sys Classpath: /data/jazz/server/jre/lib/vm.jar;/data/jazz/server/jre/lib/core.jar;/data/jazz/server/jre/lib/charsets.jar;/data/jaz
z/server/jre/lib/graphics.jar;/data/jazz/server/jre/lib/security.jar;/data/jazz/server/jre/lib/ibmpkcs.jar;/data/jazz/server/jre/lib/ibmorb.jar;/dat
a/jazz/server/jre/lib/ibmcfw.jar;/data/jazz/server/jre/lib/ibmorbapi.jar;/data/jazz/server/jre/lib/ibmjcefw.jar;/data/jazz/server/jre/lib/ibmjgsspro
vider.jar;/data/jazz/server/jre/lib/ibmjsseprovider2.jar;/data/jazz/server/jre/lib/ibmjaaslm.jar;/data/jazz/server/jre/lib/ibmcertpathprovider.jar;/
data/jazz/server/jre/lib/server.jar;/data/jazz/server/jre/lib/xml.jar;
1CIUSERARGS UserArgs:
2CIUSERARG -Xjcl:jclscar_23