text: drop index ACT_RU_CASE_EXECUTION.ACT_IDX_CASE_EXEC_BUSKEY;
  drop index ACT_RE_CASE_DEF.ACT_IDX_CASE_DEF_TENANT_ID;
  drop index ACT_RU_CASE_EXECUTION.ACT_IDX_CASE_EXEC_TENANT_ID;
  
  -- indexes for concurrency problems - https://app.camunda.com/jira/browse/CAM-1646 --
  drop index ACT_RU_CASE_EXECUTION.ACT_IDX_CASE_EXEC_CASE;
  drop index ACT_RU_CASE_EXECUTION.ACT_IDX_CASE_EXEC_PARENT;
  drop index ACT_RU_VARIABLE.ACT_IDX_VARIABLE_CASE_EXEC;
  drop index ACT_RU_VARIABLE.ACT_IDX_VARIABLE_CASE_INST;
  drop index ACT_RU_TASK.ACT_IDX_TASK_CASE_EXEC;
  drop index ACT_RU_TASK.ACT_IDX_TASK_CASE_DEF_ID;
  drop index ACT_RU_CASE_SENTRY_PART.ACT_IDX_CASE_SENTRY_CASE_INST;
  drop index ACT_RU_CASE_SENTRY_PART.ACT_IDX_CASE_SENTRY_CASE_EXEC;
  
  alter table ACT_RU_CASE_EXECUTION
      drop constraint ACT_FK_CASE_EXE_CASE_INST;
  
  alter table ACT_RU_CASE_EXECUTION
      drop constraint ACT_FK_CASE_EXE_PARENT;
  
  alter table ACT_RU_CASE_EXECUTION
      drop constraint ACT_FK_CASE_EXE_CASE_DEF;
  
  alter table ACT_RU_VARIABLE
      drop constraint ACT_FK_VAR_CASE_EXE;
  
  alter table ACT_RU_VARIABLE
      drop constraint ACT_FK_VAR_CASE_INST;
  
  alter table ACT_RU_TASK
      drop constraint ACT_FK_TASK_CASE_EXE;
  
  alter table ACT_RU_TASK
      drop constraint ACT_FK_TASK_CASE_DEF;
  
  alter table ACT_RU_CASE_SENTRY_PART
      drop constraint ACT_FK_CASE_SENTRY_CASE_INST;
  
  alter table ACT_RU_CASE_SENTRY_PART
      drop constraint ACT_FK_CASE_SENTRY_CASE_EXEC;
  
  if exists (select TABLE_NAME from INFORMATION_SCHEMA.TABLES where TABLE_NAME = 'ACT_RE_CASE_DEF') drop table ACT_RE_CASE_DEF;
  if exists (select TABLE_NAME from INFORMATION_SCHEMA.TABLES where TABLE_NAME = 'ACT_RU_CASE_EXECUTION') drop table ACT_RU_CASE_EXECUTION;
  if exists (select TABLE_NAME from INFORMATION_SCHEMA.TABLES where TABLE_NAME = 'ACT_RU_CASE_SENTRY_PART') drop table ACT_RU_CASE_SENTRY_PART;
  