Question

我编写了一个PL / SQL过程，如果首先禁用索引，然后在完成时重建索引，这将有好处。 existing thread建议采用这种方法：

alter session set skip_unusable_indexes = true;

alter index your_index unusable;

[do import]

alter index your_index rebuild;

但是，我在第一个alter index语句中收到以下错误：

SQL Error: ORA-14048: a partition maintenance operation may not be combined with other operations
ORA-06512: [...]
14048. 00000 -  "a partition maintenance operation may not be combined with other operations"
*Cause:    ALTER TABLE or ALTER INDEX statement attempted to combine
           a partition maintenance operation (e.g. MOVE PARTITION) with some
           other operation (e.g. ADD PARTITION or PCTFREE which is illegal
*Action:   Ensure that a partition maintenance operation is the sole
           operation specified in ALTER TABLE or ALTER INDEX statement;
           operations other than those dealing with partitions,
           default attributes of partitioned tables/indices or
           specifying that a table be renamed (ALTER TABLE RENAME) may be
           combined at will

问题索引定义如下：

CREATE INDEX A11_IX1 ON STREETS ("SHAPE")
  INDEXTYPE IS "SDE"."ST_SPATIAL_INDEX" PARAMETERS
  ('ST_GRIDS=890,8010,72090 ST_SRID=2');

这是来自第三方供应商的自定义索引类型，在高容量更新/插入/删除操作期间会导致长期性能下降。

有关如何解决此错误的任何建议？顺便说一句，此错误仅发生在PL / SQL块中。

编辑：以下是整个程序：

procedure disable_indexes (
  tbl_name in varchar2
) as
  stmt varchar2(200);
  cursor curs(v_tbl_name in varchar2) is
    select 'alter index ' || index_name || ' unusable;' as ddl_stmt
    from user_indexes
    where upper(table_owner) = upper(user)
    and upper(table_name) = upper(v_tbl_name)
    and ityp_name in ('CTXCAT', 'ST_SPATIAL_INDEX');
begin
  for r_curs in curs(tbl_name) loop
    dbms_output.put_line(r_curs.ddl_stmt);
    execute immediate r_curs.ddl_stmt;
  end loop;
end;

Answer 1

如果这确实是您的代码而不是伪代码重写，请删除;变量中语句末尾的stmt（否则您将遇到ORA-00911: invalid character期间执行）

现在，如果您的流程是手动运行的，那么您应该能够在过程中使用execute immediate。在手动执行命令之前发出SET ROLE NONE，确保这不是角色问题（请参阅此article by Tom Kyte。）

Answer 2

您之前尝试过DROP INDEX，然后在之后重新创建吗？

在PL / SQL过程中无法禁用索引

2 个答案: