| 12345678910111213141516171819202122 | alter table ACT_HI_TASKINST    add CATEGORY_ NVARCHAR2(255);    drop index ACT_UNIQ_HI_BUS_KEY;        alter table ACT_HI_VARINST    add CREATE_TIME_ TIMESTAMP(6);     alter table ACT_HI_VARINST    add LAST_UPDATED_TIME_ TIMESTAMP(6);       alter table ACT_HI_PROCINST    add TENANT_ID_ NVARCHAR2(255) default '';        alter table ACT_HI_ACTINST    add TENANT_ID_ NVARCHAR2(255) default '';     alter table ACT_HI_TASKINST    add TENANT_ID_ NVARCHAR2(255) default '';        alter table ACT_HI_ACTINST    modify ASSIGNEE_ NVARCHAR2(255);
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