• 属于索引表空间数据文件丢失中进行恢复

    Recovering from the loss of a data file that belongs to an indexes-only tablespace.

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  • 以下例子演示用于本地全局索引空间规范

    The following example demonstrates the table space specification for local and global indexes on the table.

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  • 应该单独一个空间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.

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  • 如果索引表空间使用较大缓冲并且尽可能不同 insert排序以便排好序的,而不是随机的,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.

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  • 关于空间索引节点分区信息

    Information about the table space and index node groups or partitions.

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  • 每个数据分区索引分区可以位于不同空间中。

    The index partition for each data partition can be in a different table space.

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  • 由于关系数据索引存储空间不同存储对象中,因此它们具有不同的计数器

    Since relational data and indexes are stored in separate storage objects within a table space, they have separate read and write counters.

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  • A全局索引允许灵活每个索引指定空间

    A: Global indexes allow the flexibility of specifying a table space for each index.

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  • Q每个分区本地索引分区数据分区能否处于同一空间中?

    Q: Can the local index partition and data partition be in the same table space for each partition?

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  • 用于空间索引分区放在单独DASD中,并且,如果可能的话,要隔开控制单元减少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.

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  • 这些对象包括模式空间索引视图例程序列服务器昵称

    These objects include schemas, table spaces, tables, indexes, views, packages, routines, sequences, servers, and nicknames.

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  • 第一方法通常更为高效但是因为要求索引数据驻留不同空间对于现有数据库太适用。

    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.

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  • 但是倘若是将特定的空间索引指派给那些缓冲那么这些因素可以看作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.

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  • 空间快照数据中可以看出,这些页面对象用于告知索引数据库大小

    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.

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  • 空间一个包含索引对象数据存储结构

    A table space is a storage structure containing tables, indexes, large objects, and long data.

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  • 附加数据分区具有与其数据处于不同空间中的索引

    The data partition being attached has indexes in a separate table space from the data.

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  • 如果立即建立索引则需要扫描空间这样花费比较时间

    If you build the index immediately, the table space is scanned, which can take a considerable amount of time.

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  • 包含索引空间缓冲控制信息

    It contains control block information for tables, indexes, table Spaces, and buffer pools.

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  • 空间物理容器分组容纳各个数据及其索引

    Table Spaces group physical containers to hold data of various tables and their indexes.

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  • Q为什么无法利用CREATEindex语句本地索引指定空间

    Q: Why can't I specify a table space for my local index using the CREATE index statement?

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  • 查看将要存储索引空间

    Review the tablespaces where the indexes are to be stored.

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  • 第1部分中提到过,两种类型访问方法:空间扫描(TBSCAN)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).

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  • IndexTSName:指定存储每个数据分区分区索引空间

    IndexTSName: Identifies the table space in which the partitioned index for each data partition is to be stored.

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  • 缩小索引空间规模。

    Reduce the number of extents of the table or index space.

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  • IndexTSName标识空间其中存储分区任何分区索引

    IndexTSName: Identifies the table space in which any partitioned indexes for the new partition are to be stored.

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  • 缓冲索引物理读数(以表空间单位定义)。

    Buffer pool index physical reads (defined in units of tablespace page size).

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  • 当然要求数据索引创建单独表空间

    Of course, this also requires that you create separate tablespaces for data and indexes.

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  • 根据活动索引空间执行时,降低并发可用性。

    They can reduce concurrency and availability when executed against a live table or index space.

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  • 可以使用in子句用户数据所在空间创建一个索引或者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.

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  • 不同全局索引每个全局索引自己对象,其提供灵活空间定位能力支持单个全局索引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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