Following issue came because one of the library could not be loaded. So you need to add that library to lib directory of your SOA domain.
Go to the /oracle/Middleware/Oracle_SOA1/soa/modules and then copy the oracle.bpm.runtime.classloader-util.jar jar file.
Go to /oracle/Middleware/user_projects/domains/[domain_name]/lib directory and past that file.
restart the servers, hope this will help.
javax.ejb.EJBException: EJB Exception: : java.lang.NoClassDefFoundError: oracle/bpm/runtime/quartz/trigger/TriggerWithReschedule
at oracle.bpm.bpmn.engine.model.runtime.util.SchedulingHelper.schedule(SchedulingHelper.java:46)
at oracle.bpm.bpmn.engine.model.TimerStartEventScheduler.schedule(TimerStartEventScheduler.java:172)
at oracle.bpm.bpmn.engine.ejb.impl.BPMNServerManagerBean.scheduleStartTimerEvents(BPMNServerManagerBean.java:261)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.bea.core.repackaged.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:310)
at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
at com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
at com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at com.bea.core.repackaged.springframework.jee.spi.MethodInvocationVisitorImpl.visit(MethodInvocationVisitorImpl.java:37)
at weblogic.ejb.container.injection.EnvironmentInterceptorCallbackImpl.callback(EnvironmentInterceptorCallbackImpl.java:54)
at com.bea.core.repackaged.springframework.jee.spi.EnvironmentInterceptor.invoke(EnvironmentInterceptor.java:50)
at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at com.bea.core.repackaged.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89)
at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
at com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at com.bea.core.repackaged.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at $Proxy287.scheduleStartTimerEvents(Unknown Source)
at oracle.bpm.bpmn.engine.ejb.impl.BPMNServerManagerBean_6gbx7k_IBPMNCubeServerManagerLocalBeanImpl.__WL_invoke(Unknown Source)
at weblogic.ejb.container.internal.SessionLocalMethodInvoker.invoke(SessionLocalMethodInvoker.java:39)
at oracle.bpm.bpmn.engine.ejb.impl.BPMNServerManagerBean_6gbx7k_IBPMNCubeServerManagerLocalBeanImpl.scheduleStartTimerEvents(Unknown Source)
at oracle.bpm.bpmn.engine.service.BPMNServiceEngine.scheduleStartTimerEvents(BPMNServiceEngine.java:1398)
at oracle.bpm.bpmn.engine.service.BPMNServiceEngine.postDeployComponent(BPMNServiceEngine.java:1131)
at oracle.bpm.bpmn.engine.service.BPMNServiceEngine.internalPostDeployComponent(BPMNServiceEngine.java:1353)
at oracle.bpm.bpmn.engine.service.BPMNServiceEngine.onApplicationEvent(BPMNServiceEngine.java:1073)
at org.springframework.context.event.SimpleApplicationEventMulticaster$1.run(SimpleApplicationEventMulticaster.java:78)
at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:49)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:76)
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:274)
at oracle.integration.platform.blocks.deploy.DeploymentEventPublisher.invoke(DeploymentEventPublisher.java:93)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at $Proxy374.deploy(Unknown Source)
at oracle.integration.platform.kernel.FabricKernelInitializerServlet$1.run(FabricKernelInitializerServlet.java:819)
at oracle.integration.platform.blocks.executor.WorkManagerExecutor$1.run(WorkManagerExecutor.java:120)
at weblogic.work.j2ee.J2EEWorkManager$WorkWithListener.run(J2EEWorkManager.java:183)
at weblogic.work.DaemonWorkThread.run(DaemonWorkThread.java:30)
Caused by: java.lang.ClassNotFoundException: oracle.bpm.runtime.quartz.trigger.TriggerWithReschedule