从属于只索引表空间的数据文件的丢失中进行恢复。
Recovering from the loss of a data file that belongs to an indexes-only tablespace.
以下例子演示了用于表的本地和全局索引表空间规范。
The following example demonstrates the table space specification for local and global indexes on the table.
您应该在单独的一个表空间上创建索引,这样如果索引表空间出现问题,您可以直接删除该表空间,然后重要创建相同的索引。
You should create an index in a separate table space so that if something goes wrong with the index table space, you can easily drop it and then recreate the same indexes.
如果为索引表空间使用较大的缓冲池,并且尽可能地将不同 insert排序,以便键值是排好序的,而不是随机的,就可以帮助加快索引维护。
You can help speed up index maintenance by using a large buffer pool for the index tablespace, and, if possible, ordering the inserts so that the key values are ordered, not random.
关于表空间和索引节点组或分区的信息。
Information about the table space and index node groups or partitions.
每个数据分区的索引分区可以位于不同的表空间中。
The index partition for each data partition can be in a different table space.
由于关系数据和索引存储在表空间内不同的存储对象中,因此它们具有不同的读和写计数器。
Since relational data and indexes are stored in separate storage objects within a table space, they have separate read and write counters.
A:全局索引允许灵活地为每个索引指定一个表空间。
A: Global indexes allow the flexibility of specifying a table space for each index.
Q:每个分区的本地索引分区和数据分区能否处于同一表空间中?
Q: Can the local index partition and data partition be in the same table space for each partition?
将用于表空间和索引的分区放在单独的DASD卷中,并且,如果可能的话,要隔开控制单元,以减少I/O争用。
Place the partitions for the table space and indexes on separate DASD volumes and (if possible) separate control units in order to minimize I/O contention.
这些对象包括模式、表空间、表、索引、视图、包、例程、序列、服务器和昵称。
These objects include schemas, table spaces, tables, indexes, views, packages, routines, sequences, servers, and nicknames.
第一个方法通常更为高效,但是因为它要求索引和数据驻留在不同的表空间,对于现有数据库不太适用。
The first method is often more effective, but because it requires indices and data to reside in different table Spaces, it may not be an option for existing databases.
但是,倘若是将特定的表空间和索引指派给那些缓冲池,那么这些因素又可以看作是数据库设计一类的因素了。
But when assigning specific table Spaces and indexes to those buffer pools, that could be viewed somewhat as a database design consideration.
从表空间快照数据中可以看出,这些用过的页面对象可用于告知索引、表和数据库的总大小。
From the table space snapshot data, the used page objects can be used to tell the total size of the index, tables, and the total database size.
表空间是一个包含表、索引、大对象和长数据的存储结构。
A table space is a storage structure containing tables, indexes, large objects, and long data.
附加的数据分区具有与其数据处于不同表空间中的索引。
The data partition being attached has indexes in a separate table space from the data.
如果立即建立索引,则需要扫描表空间,这样要花费比较多的时间。
If you build the index immediately, the table space is scanned, which can take a considerable amount of time.
它包含表、索引、表空间和缓冲池的控制块信息。
It contains control block information for tables, indexes, table Spaces, and buffer pools.
表空间将物理容器分组,以容纳各个表的数据及其索引。
Table Spaces group physical containers to hold data of various tables and their indexes.
Q:为什么我无法利用CREATEindex语句为我的本地索引指定表空间?
Q: Why can't I specify a table space for my local index using the CREATE index statement?
查看将要存储索引的表空间。
在第1部分中提到过,有两种类型访问方法:表空间扫描(TBSCAN)和索引扫描(IXSCAN)。
As was mentioned in the previous article, for single table access, there are two types of access methods: table space scan (TBSCAN) and index scan (IXSCAN).
IndexTSName:指定存储每个数据分区的分区索引的表空间。
IndexTSName: Identifies the table space in which the partitioned index for each data partition is to be stored.
缩小表或索引空间的规模。
IndexTSName:标识表空间,其中存储新分区的任何分区索引。
IndexTSName: Identifies the table space in which any partitioned indexes for the new partition are to be stored.
缓冲池索引物理读数(以表空间页宽为单位定义)。
Buffer pool index physical reads (defined in units of tablespace page size).
当然,这还要求为数据和索引创建单独的表空间。
Of course, this also requires that you create separate tablespaces for data and indexes.
当根据活动表或索引空间执行时,会降低并发性和可用性。
They can reduce concurrency and availability when executed against a live table or index space.
您可以使用in子句在用户数据所在的表空间上创建一个索引,或者在其他表空间上创建索引。
You can use the in clause to create an index in the same table space where user data resides, or in a different table space.
这不同于全局索引,每个全局索引有自己的对象,其提供灵活的表空间定位能力,并支持单个全局索引REORG操作。
This differs from global indexes where each global index has its own object, allowing greater flexibility in table space placement and support for REORG for an individual global index.
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