Oracle批量修改序列值

declare
  seq_name varchar2(100);
  l_currval number; --序列的当前值
  cursor seq_cur is
  select ur.sequence_name from user_sequences ur WHERE sequence_name LIKE 'HMALL%' OR sequence_name LIKE 'SYS%' OR sequence_name LIKE 'ACT%';--将当前数据库所有序列的名称存放到游标中 此处写判断语句 否则会出现ORA-32793
begin
  --dbms_output.enable(buffer_size=>null);
  open seq_cur;
  fetch seq_cur into seq_name;
  loop
    exit when not seq_cur%found;
    --修改数据库序列的下限
    execute immediate 'alter sequence '||seq_name||' minvalue -5000';
    
    --需要变化的数量
    execute immediate 'alter sequence '||seq_name||' increment by 10000';
    
    --给序列取下一个数
    execute immediate 'select '||seq_name||'.nextval from dual' into l_currval;
    
    --将序列的递增情况，恢复为按1递增
    execute immediate 'alter sequence '||seq_name||' increment by 1';
    
    --将数据库序列的下限修改为1
    execute immediate 'alter sequence '||seq_name||' minvalue 1';
    
    --dbms_output.put_line(l_currval);
    fetch seq_cur into seq_name;
  end loop;
  close seq_cur;
end;