org.camunda.bpm.engine.ProcessEngineException: ENGINE-03083 Exception while executing Batch Database Operations with message '
### Error flushing statements.  Cause: org.apache.ibatis.executor.BatchExecutorException: org.camunda.bpm.engine.impl.persistence.entity.VariableInstanceEntity.deleteByteArrayNoRevisionCheck (batch index #12) failed. 11 prior sub executor(s) completed successfully, but will be rolled back. Cause: java.sql.BatchUpdateException: ORA-02292: integrity constraint (XXCAMUNDA.ACT_FK_JOB_EXCEPTION) violated - child record found

### Cause: org.apache.ibatis.executor.BatchExecutorException: org.camunda.bpm.engine.impl.persistence.entity.VariableInstanceEntity.deleteByteArrayNoRevisionCheck (batch index #12) failed. 11 prior sub executor(s) completed successfully, but will be rolled back. Cause: java.sql.BatchUpdateException: ORA-02292: integrity constraint (XXCAMUNDA.ACT_FK_JOB_EXCEPTION) violated - child record found

java.sql.BatchUpdateException: ORA-02292: integrity constraint (XXCAMUNDA.ACT_FK_JOB_EXCEPTION) violated - child record found

java.sql.SQLIntegrityConstraintViolationException: ORA-02292: integrity constraint (XXCAMUNDA.ACT_FK_JOB_EXCEPTION) violated - child record found

'. Flush summary: 
 [
  INSERT HistoricVariableInstanceEntity[7f370dc9-8675-11e8-aa9d-02b8569c9fb0]
  INSERT HistoricVariableInstanceEntity[7f370dce-8675-11e8-aa9d-02b8569c9fb0]
  INSERT HistoricVariableInstanceEntity[7f3734e3-8675-11e8-aa9d-02b8569c9fb0]
  INSERT HistoricJobLogEventEntity[7f7a586e-8675-11e8-aa9d-02b8569c9fb0]
  INSERT HistoricJobLogEventEntity[7f84b8af-8675-11e8-aa9d-02b8569c9fb0]
  INSERT HistoricVariableUpdateEventEntity[7f370dcb-8675-11e8-aa9d-02b8569c9fb0]
  INSERT HistoricVariableUpdateEventEntity[7f3734e0-8675-11e8-aa9d-02b8569c9fb0]
  INSERT HistoricVariableUpdateEventEntity[7f3734e5-8675-11e8-aa9d-02b8569c9fb0]
  INSERT HistoricVariableUpdateEventEntity[7f3734e9-8675-11e8-aa9d-02b8569c9fb0]
  INSERT HistoricVariableUpdateEventEntity[7f53e4ab-8675-11e8-aa9d-02b8569c9fb0]
  INSERT HistoricVariableUpdateEventEntity[7f5d819c-8675-11e8-aa9d-02b8569c9fb0]
  INSERT HistoricActivityInstanceEventEntity[Task_130:d10b588c-8674-11e8-aa9d-02b8569c9fb0]
  INSERT ByteArrayEntity[7f36e6b8-8675-11e8-aa9d-02b8569c9fb0]
  INSERT ByteArrayEntity[7f370dca-8675-11e8-aa9d-02b8569c9fb0]
  INSERT ByteArrayEntity[7f370dcc-8675-11e8-aa9d-02b8569c9fb0]
  INSERT ByteArrayEntity[7f370dcd-8675-11e8-aa9d-02b8569c9fb0]
  INSERT ByteArrayEntity[7f3734df-8675-11e8-aa9d-02b8569c9fb0]
  INSERT ByteArrayEntity[7f3734e1-8675-11e8-aa9d-02b8569c9fb0]
  INSERT ByteArrayEntity[7f3734e2-8675-11e8-aa9d-02b8569c9fb0]
  INSERT ByteArrayEntity[7f3734e4-8675-11e8-aa9d-02b8569c9fb0]
  INSERT ByteArrayEntity[7f3734e6-8675-11e8-aa9d-02b8569c9fb0]
  INSERT ByteArrayEntity[7f3734e7-8675-11e8-aa9d-02b8569c9fb0]
  INSERT ByteArrayEntity[7f3734e8-8675-11e8-aa9d-02b8569c9fb0]
  INSERT ByteArrayEntity[7f53bd9a-8675-11e8-aa9d-02b8569c9fb0]
  INSERT VariableInstanceEntity[7f370dc9-8675-11e8-aa9d-02b8569c9fb0]
  INSERT VariableInstanceEntity[7f370dce-8675-11e8-aa9d-02b8569c9fb0]
  INSERT VariableInstanceEntity[7f3734e3-8675-11e8-aa9d-02b8569c9fb0]
  INSERT MessageEntity[7f7a586d-8675-11e8-aa9d-02b8569c9fb0]
  DELETE IncidentEntity[2f19b727-8675-11e8-aa9d-02b8569c9fb0]
  DELETE MessageEntity[af8012b6-8672-11e8-aa9d-02b8569c9fb0]
  UPDATE VariableInstanceEntity[5b7709d5-85b6-11e8-aa9d-02b8569c9fb0]
  UPDATE VariableInstanceEntity[60977c75-85b7-11e8-aa9d-02b8569c9fb0]
  UPDATE VariableInstanceEntity[60977c77-85b7-11e8-aa9d-02b8569c9fb0]
  DELETE ByteArrayEntity[5b7709d4-85b6-11e8-aa9d-02b8569c9fb0]
  DELETE ByteArrayEntity[5b7709d8-85b6-11e8-aa9d-02b8569c9fb0]
  DELETE_BULK deleteByteArrayNoRevisionCheck b5a96a78-8673-11e8-aa9d-02b8569c9fb0
  UPDATE ExecutionEntity[5b5047e6-85b6-11e8-aa9d-02b8569c9fb0]
  UPDATE HistoricIncidentEventEntity[2f19b727-8675-11e8-aa9d-02b8569c9fb0]
  UPDATE HistoricVariableInstanceEntity[5b7709d5-85b6-11e8-aa9d-02b8569c9fb0]
]
	at org.camunda.bpm.engine.impl.db.EnginePersistenceLogger.flushDbOperationsException(EnginePersistenceLogger.java:698)
	at org.camunda.bpm.engine.impl.db.entitymanager.DbEntityManager.flushDbOperations(DbEntityManager.java:355)
	at org.camunda.bpm.engine.impl.db.entitymanager.DbEntityManager.flushDbOperationManager(DbEntityManager.java:318)
	at org.camunda.bpm.engine.impl.db.entitymanager.DbEntityManager.flush(DbEntityManager.java:290)
	at org.camunda.bpm.engine.impl.interceptor.CommandContext.flushSessions(CommandContext.java:203)
	at org.camunda.bpm.engine.impl.interceptor.CommandContext.close(CommandContext.java:132)
	at org.camunda.bpm.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:113)
	at org.camunda.bpm.engine.impl.interceptor.ProcessApplicationContextInterceptor.execute(ProcessApplicationContextInterceptor.java:66)
	at org.camunda.bpm.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:30)
	at org.camunda.bpm.engine.impl.jobexecutor.ExecuteJobHelper.executeJob(ExecuteJobHelper.java:36)
	at org.camunda.bpm.engine.impl.jobexecutor.ExecuteJobHelper.executeJob(ExecuteJobHelper.java:29)
	at org.camunda.bpm.engine.impl.jobexecutor.ExecuteJobsRunnable.executeJob(ExecuteJobsRunnable.java:88)
	at org.camunda.bpm.engine.impl.jobexecutor.ExecuteJobsRunnable.run(ExecuteJobsRunnable.java:57)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.ibatis.exceptions.PersistenceException: 
### Error flushing statements.  Cause: org.apache.ibatis.executor.BatchExecutorException: org.camunda.bpm.engine.impl.persistence.entity.VariableInstanceEntity.deleteByteArrayNoRevisionCheck (batch index #12) failed. 11 prior sub executor(s) completed successfully, but will be rolled back. Cause: java.sql.BatchUpdateException: ORA-02292: integrity constraint (XXCAMUNDA.ACT_FK_JOB_EXCEPTION) violated - child record found

### Cause: org.apache.ibatis.executor.BatchExecutorException: org.camunda.bpm.engine.impl.persistence.entity.VariableInstanceEntity.deleteByteArrayNoRevisionCheck (batch index #12) failed. 11 prior sub executor(s) completed successfully, but will be rolled back. Cause: java.sql.BatchUpdateException: ORA-02292: integrity constraint (XXCAMUNDA.ACT_FK_JOB_EXCEPTION) violated - child record found

	at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30)
	at org.apache.ibatis.session.defaults.DefaultSqlSession.flushStatements(DefaultSqlSession.java:255)
	at org.camunda.bpm.engine.impl.db.sql.DbSqlSession.flushOperations(DbSqlSession.java:88)
	at org.camunda.bpm.engine.impl.db.entitymanager.DbEntityManager.flushDbOperations(DbEntityManager.java:350)
	... 14 more
Caused by: org.apache.ibatis.executor.BatchExecutorException: org.camunda.bpm.engine.impl.persistence.entity.VariableInstanceEntity.deleteByteArrayNoRevisionCheck (batch index #12) failed. 11 prior sub executor(s) completed successfully, but will be rolled back. Cause: java.sql.BatchUpdateException: ORA-02292: integrity constraint (XXCAMUNDA.ACT_FK_JOB_EXCEPTION) violated - child record found

	at org.apache.ibatis.executor.BatchExecutor.doFlushStatements(BatchExecutor.java:146)
	at org.apache.ibatis.executor.BaseExecutor.flushStatements(BaseExecutor.java:129)
	at org.apache.ibatis.executor.BaseExecutor.flushStatements(BaseExecutor.java:122)
	at org.apache.ibatis.executor.CachingExecutor.flushStatements(CachingExecutor.java:114)
	at org.apache.ibatis.session.defaults.DefaultSqlSession.flushStatements(DefaultSqlSession.java:253)
	... 16 more
Caused by: java.sql.BatchUpdateException: ORA-02292: integrity constraint (XXCAMUNDA.ACT_FK_JOB_EXCEPTION) violated - child record found

	at oracle.jdbc.driver.OraclePreparedStatement.executeBatch(OraclePreparedStatement.java:11190)
	at oracle.jdbc.driver.OracleStatementWrapper.executeBatch(OracleStatementWrapper.java:244)
	at sun.reflect.GeneratedMethodAccessor176.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.apache.tomcat.jdbc.pool.StatementFacade$StatementProxy.invoke(StatementFacade.java:114)
	at com.sun.proxy.$Proxy4.executeBatch(Unknown Source)
	at org.apache.ibatis.executor.BatchExecutor.doFlushStatements(BatchExecutor.java:122)
	... 20 more