公开(公告)号：US09361232B2

公开(公告)日：2016-06-07

申请号：US13839251

申请日：2013-03-15

Applicant: Oracle International Corporation

Inventor： Kothanda Umamageswaran ,  Juan R. Loaiza ,  Umesh Panchaksharaiah ,  Alexander Tsukerman ,  Timothy L. Shetler ,  Bharat C. V. Baddepudi ,  Boris Erlikhman ,  Kiran B. Goyal ,  Nilesh Choudhury ,  Susy Fan ,  Poojan Kumar ,  Selcuk Aya ,  Sue-Kyoung Lee

IPC: G06F12/084 ,  G06F12/08 ,  G06F17/30

CPC classification number: G06F12/084 ,  G06F12/0811 ,  G06F12/0866 ,  G06F12/0888 ,  G06F17/3048 ,  G06F17/30492

Abstract: Techniques are provided for using an intermediate cache to provide some of the items involved in a scan operation, while other items involved in the scan operation are provided from primary storage. Techniques are also provided for determining whether to service an I/O request for an item with a copy of the item that resides in the intermediate cache based on factors such as a) an identity of the user for whom the I/O request was submitted, b) an identity of a service that submitted the I/O request, c) an indication of a consumer group to which the I/O request maps, or d) whether the intermediate cache is overloaded. Techniques are also provided for determining whether to store items in an intermediate cache in response to the items being retrieved, based on logical characteristics associated with the requests that retrieve the items.

Abstract translation: 提供了使用中间缓存来提供扫描操作中涉及的一些项目的技术，而从主存储器提供涉及扫描操作的其他项目。 还提供了用于基于以下因素来确定是否对具有驻留在中间高速缓存中的项目的副本的项目的I / O请求进行服务的技术，例如：a）向其提交I / O请求的用户的身份 ，b）提交I / O请求的服务的身份，c）I / O请求所映射的消费者组的指示，或d）中间缓存是否过载。 还提供了基于与检索项目的请求相关联的逻辑特征来确定是否将项目存储在中间高速缓存中以响应于正被检索的项目的技术。

公开(公告)号：US20130212332A1

公开(公告)日：2013-08-15

申请号：US13839251

申请日：2013-03-15

Applicant: ORACLE INTERNATIONAL CORPORATION

Inventor： Kothanda Umamageswaran ,  Juan R. Loaiza ,  Umesh Panchaksharaiah ,  Alexander Tsukerman ,  Timothy L. Shetler ,  Bharat C. V. Baddepudi ,  Boris Erlikhman ,  Kiran B. Goyal ,  Nilesh Choudhury ,  Susy Fan ,  Poojan Kumar ,  Selcuk Aya ,  Sue-Kyoung Lee

IPC: G06F12/08

CPC classification number: G06F12/084 ,  G06F12/0811 ,  G06F12/0866 ,  G06F12/0888 ,  G06F17/3048 ,  G06F17/30492

Abstract: Techniques are provided for using an intermediate cache to provide some of the items involved in a scan operation, while other items involved in the scan operation are provided from primary storage. Techniques are also provided for determining whether to service an I/O request for an item with a copy of the item that resides in the intermediate cache based on factors such as a) an identity of the user for whom the I/O request was submitted, b) an identity of a service that submitted the I/O request, c) an indication of a consumer group to which the I/O request maps, or d) whether the intermediate cache is overloaded. Techniques are also provided for determining whether to store items in an intermediate cache in response to the items being retrieved, based on logical characteristics associated with the requests that retrieve the items.

Abstract translation: 提供了使用中间缓存来提供扫描操作中涉及的一些项目的技术，而从主存储器提供涉及扫描操作的其他项目。 还提供了用于基于以下因素来确定是否对具有驻留在中间高速缓存中的项目的副本的项目的I / O请求进行服务的技术，例如：a）向其提交I / O请求的用户的身份 ，b）提交I / O请求的服务的身份，c）I / O请求所映射的消费者组的指示，或d）中间缓存是否过载。 还提供了基于与检索项目的请求相关联的逻辑特征来确定是否将项目存储在中间高速缓存中以响应于正被检索的项目的技术。

公开(公告)号：US20140337314A1

公开(公告)日：2014-11-13

申请号：US14339412

申请日：2014-07-23

Applicant: Oracle International Corporation

Inventor： Dmitry Potapov ,  Yiu Woon Lau ,  Hakan Jakobsson ,  Umesh Panchaksharaiah ,  Poojan Kumar

IPC: G06F17/30

CPC classification number: G06F17/30498 ,  G06F3/0611 ,  G06F3/0659 ,  G06F3/067 ,  G06F12/00 ,  G06F17/3033 ,  G06F17/30492

Abstract: Processing resources at a storage system for a database server are utilized to perform aspects of a join operation that would conventionally be performed by the database server. When requesting a range of data units from a storage system, the database server includes join metadata describing aspects of the join operation for which the data is being requested. The join metadata may be, for instance, a bloom filter. The storage system reads the requested data from disk as normal. However, prior to sending the requested data back to the storage system, the storage system analyzes the raw data based on the join metadata, removing a certain amount of data that is guaranteed to be irrelevant to the join operation. The storage system then returns filtered data to the database server. The database system thereby avoids the unnecessary transfer of certain data between the storage system and the database server.

Abstract translation: 利用用于数据库服务器的存储系统处理资源来执行通常由数据库服务器执行的连接操作的方面。 当从存储系统请求一系列数据单元时，数据库服务器包括描述正在请求数据的连接操作的方面的连接元数据。 连接元数据可以是例如布隆过滤器。 存储系统正常从磁盘读取所请求的数据。 然而，在将所请求的数据发送回存储系统之前，存储系统基于连接元数据分析原始数据，去除与加入操作无关的一定量的数据。 存储系统然后将过滤的数据返回到数据库服务器。 因此，数据库系统避免了存储系统和数据库服务器之间的某些数据的不必要的传送。

公开(公告)号：US09336275B2

公开(公告)日：2016-05-10

申请号：US14339412

申请日：2014-07-23

Applicant: Oracle International Corporation

Inventor： Dmitry Potapov ,  Yiu Woon Lau ,  Hakan Jakobsson ,  Umesh Panchaksharaiah ,  Poojan Kumar

IPC: G06F17/30 ,  G06F3/06 ,  G06F12/00

CPC classification number: G06F17/30498 ,  G06F3/0611 ,  G06F3/0659 ,  G06F3/067 ,  G06F12/00 ,  G06F17/3033 ,  G06F17/30492

Abstract: Processing resources at a storage system for a database server are utilized to perform aspects of a join operation that would conventionally be performed by the database server. When requesting a range of data units from a storage system, the database server includes join metadata describing aspects of the join operation for which the data is being requested. The join metadata may be, for instance, a bloom filter. The storage system reads the requested data from disk as normal. However, prior to sending the requested data back to the storage system, the storage system analyzes the raw data based on the join metadata, removing a certain amount of data that is guaranteed to be irrelevant to the join operation. The storage system then returns filtered data to the database server. The database system thereby avoids the unnecessary transfer of certain data between the storage system and the database server.

Abstract translation: 利用用于数据库服务器的存储系统处理资源来执行通常由数据库服务器执行的连接操作的方面。 当从存储系统请求一系列数据单元时，数据库服务器包括描述正在请求数据的连接操作的方面的连接元数据。 连接元数据可以是例如布隆过滤器。 存储系统正常从磁盘读取所请求的数据。 然而，在将所请求的数据发送回存储系统之前，存储系统基于连接元数据分析原始数据，去除与加入操作无关的一定量的数据。 存储系统然后将过滤的数据返回到数据库服务器。 因此，数据库系统避免了存储系统和数据库服务器之间的某些数据的不必要的传送。