text: ALTER TABLE TaskEvent ADD COLUMN currentOwner varchar(255);
  alter table NodeInstanceLog add column observation varchar(255);
  
  create table TimerMappingInfo (
  	id int8 not null, 
  	externalTimerId varchar(255), 
  	kieSessionId int8 not null, 
  	timerId int8 not null, 
  	uuid varchar(255) not null, 
  	info bytea, 
  	primary key (id)
  );
  
  create sequence TIMER_MAPPING_INFO_ID_SEQ;
  
  create unique index IDX_TMI_KSessionUUID on TimerMappingInfo (kieSessionId, uuid);
  