将所有 UNUSABLE 状态的 index 修复
-- 请以 DBA 权限登录,并执行
-- 将所有 UNUSABLE 状态的 index 修复, rebuild 一下即可
declare
-- 指向所有 UNUSABLE 状态的 index 的游标
cursor c is
select index_name, owner
from dba_indexes
where status='UNUSABLE';
owner dba_indexes.owner%type;
index_name dba_indexes.index_name%type;
begin
open c;
loop
fetch c into index_name, owner;
exit when c%notfound;
execute immediate 'alter index ' || owner || '.' || index_name || ' rebuild';
end loop;
close c;
end;