text: drop index ACT_IDX_HI_PRO_INST_END on ACT_HI_PROCINST;
  drop index ACT_IDX_HI_PRO_I_BUSKEY on ACT_HI_PROCINST;
  drop index ACT_IDX_HI_ACT_INST_START on ACT_HI_ACTINST;
  drop index ACT_IDX_HI_ACT_INST_END on ACT_HI_ACTINST;
  drop index ACT_IDX_HI_DETAIL_PROC_INST on ACT_HI_DETAIL;
  drop index ACT_IDX_HI_DETAIL_ACT_INST on ACT_HI_DETAIL;
  drop index ACT_IDX_HI_DETAIL_TIME on ACT_HI_DETAIL;
  drop index ACT_IDX_HI_DETAIL_NAME on ACT_HI_DETAIL;
  drop index ACT_IDX_HI_DETAIL_TASK_ID on ACT_HI_DETAIL;
  drop index ACT_IDX_HI_PROCVAR_PROC_INST on ACT_HI_VARINST;
  drop index ACT_IDX_HI_PROCVAR_NAME_TYPE on ACT_HI_VARINST;
  drop index ACT_IDX_HI_ACT_INST_PROCINST on ACT_HI_ACTINST;
  
  drop table if exists ACT_HI_PROCINST;
  drop table if exists ACT_HI_ACTINST;
  drop table if exists ACT_HI_VARINST;
  drop table if exists ACT_HI_TASKINST;
  drop table if exists ACT_HI_DETAIL;
  drop table if exists ACT_HI_COMMENT;
  drop table if exists ACT_HI_ATTACHMENT;
   