Data Warehouse Collection Jobs failure - Quality Management

When we execute the datawarehouse collection job - Quality Management. It runs for about 7 mins and then fails with the below error.

2014-07-02 09:26:19,886 [WebContainer : 10 @@ 09:18  /qm/service/com.ibm.team.reports.common.internal.service.IReportRestService/updateSomeSnapshotData] ERROR sqlExceptionLogger                                  - CRJAZ1318I A database connection error occurred.
CRJAZ0265I The virtual storage or database resource is not available.
SQL: DELETE FROM RIODS.TESTSCRIPT WHERE EXTERNAL_KEY2 IN (SELECT EXTERNAL_KEY2 FROM RIODS.TESTSCRIPT GROUP BY EXTERNAL_KEY2 HAVING COUNT(TESTSCRIPT_ID) > 1)  AND TESTSCRIPT_ID NOT IN (SELECT MIN(TESTSCRIPT_ID) FROM RIODS.TESTSCRIPT WHERE EXTERNAL_KEY2 IN (SELECT EXTERNAL_KEY2 FROM RIODS.TESTSCRIPT GROUP BY EXTERNAL_KEY2 HAVING COUNT(TESTSCRIPT_ID) > 1) GROUP BY EXTERNAL_KEY2)
Parameter 0: DELETE FROM RIODS.TESTSCRIPT WHERE EXTERNAL_KEY2 IN (SELECT EXTERNAL_KEY2 FROM RIODS.TESTSCRIPT GROUP BY EXTERNAL_KEY2 HAVING COUNT(TESTSCRIPT_ID) > 1)  AND TESTSCRIPT_ID NOT IN (SELECT MIN(TESTSCRIPT_ID) FROM RIODS.TESTSCRIPT WHERE EXTERNAL_KEY2 IN (SELECT EXTERNAL_KEY2 FROM RIODS.TESTSCRIPT GROUP BY EXTERNAL_KEY2 HAVING COUNT(TESTSCRIPT_ID) > 1) GROUP BY EXTERNAL_KEY2)
SQL Exception #1
SQL Message: DB2 SQL Error: SQLCODE=-964, SQLSTATE=57011, SQLERRMC=null, DRIVER=4.14.121
SQL State: 57011
Error Code: -964

com.ibm.db2.jcc.am.SqlException: DB2 SQL Error: SQLCODE=-964, SQLSTATE=57011, SQLERRMC=null, DRIVER=4.14.121
 at com.ibm.db2.jcc.am.ed.a(ed.java:682)
 at com.ibm.db2.jcc.am.ed.a(ed.java:60)
 at com.ibm.db2.jcc.am.ed.a(ed.java:127)
 at com.ibm.db2.jcc.am.oo.c(oo.java:2715)
 at com.ibm.db2.jcc.am.oo.d(oo.java:2703)
 at com.ibm.db2.jcc.am.oo.b(oo.java:2070)
 at com.ibm.db2.jcc.t4.ab.i(ab.java:226)
 at com.ibm.db2.jcc.t4.ab.c(ab.java:48)
 at com.ibm.db2.jcc.t4.p.b(p.java:38)
 at com.ibm.db2.jcc.t4.qb.h(qb.java:114)
 at com.ibm.db2.jcc.am.oo.hb(oo.java:2065)
 at com.ibm.db2.jcc.am.oo.a(oo.java:3237)
 at com.ibm.db2.jcc.am.oo.c(oo.java:740)
 at com.ibm.db2.jcc.am.oo.executeUpdate(oo.java:723)
 at com.ibm.team.repository.service.internal.db.jdbcwrappers.stat.StatementStatWrapper.executeUpdate(StatementStatWrapper.java:225)
 at com.ibm.team.repository.service.internal.db.jdbcwrappers.errlog.StatementErrLogWrapper.executeUpdate(StatementErrLogWrapper.java:240)
 at com.ibm.team.repository.service.internal.db.jdbcwrappers.leak.StatementLeakWrapper.executeUpdate(StatementLeakWrapper.java:95)
 at com.ibm.team.datawarehouse.service.rqmmigration4.internal.etlbuild.RQM4TestScriptCleanUpETL.cleanUpDuplicateTestScripts(RQM4TestScriptCleanUpETL.java:475)
 at com.ibm.team.datawarehouse.service.rqmmigration4.internal.etlbuild.RQM4TestScriptCleanUpETL.execute(RQM4TestScriptCleanUpETL.java:147)
 at com.ibm.team.datawarehouse.service.rqm.internal.RemoteRQMSnapshotService.cleanupDuplicateTestScripts(RemoteRQMSnapshotService.java:1461)
 at com.ibm.team.datawarehouse.service.rqm.internal.RemoteRQMSnapshotService.updateSnapshot(RemoteRQMSnapshotService.java:209)
 at com.ibm.team.datawarehouse.service.etl.AbstractRemoteSnapshotService$1.run(AbstractRemoteSnapshotService.java:199)
 at com.ibm.team.datawarehouse.service.internal.RemoteDatabaseService$6.run(RemoteDatabaseService.java:523)
 at com.ibm.team.repository.service.internal.rdb.ConnectionPoolService.withCurrentConnection(ConnectionPoolService.java:434)
 at com.ibm.team.datawarehouse.service.internal.RemoteDatabaseService.write(RemoteDatabaseService.java:485)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:60)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
 at java.lang.reflect.Method.invoke(Method.java:611)
 at org.eclipse.soda.sat.core.internal.record.ExportProxyServiceRecord.invoke(ExportProxyServiceRecord.java:361)
 at org.eclipse.soda.sat.core.internal.record.ExportProxyServiceRecord.access$0(ExportProxyServiceRecord.java:347)
 at org.eclipse.soda.sat.core.internal.record.ExportProxyServiceRecord$ExportedServiceInvocationHandler.invoke(ExportProxyServiceRecord.java:56)
 at $Proxy118.write(Unknown Source)
 at com.ibm.team.datawarehouse.service.internal.RemoteDataWarehouseProvider.write(RemoteDataWarehouseProvider.java:29)