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公开(公告)号：US20200242156A1
公开(公告)日：2020-07-30
申请号：US16852075
申请日：2020-04-17
Applicant: Oracle International Corporation
Inventor： Zhen Hua Liu , Beda C. Hammerschmidt , Sriram Krishnamurthy , Ying Lu , Douglas J. McMahon , Srividya Tata , Vikas Arora
Abstract: Techniques are described herein for leveraging and extending relational data sharding infrastructure to provide comprehensive support for sharding semi-structured and unstructured data, in addition to the relational data, in a single sharded database system. Specifically, techniques are described in which a catalog server pre-gathers all data it needs to answer fetches from a dynamically created temporary lob. In addition, techniques are provided in which a catalog server encodes shard identifiers in lob locators sent to the client. Techniques are provided for pushing down various operators to shard servers.
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公开(公告)号：US10747814B2
公开(公告)日：2020-08-18
申请号：US15848737
申请日：2017-12-20
Applicant: Oracle International Corporation
Inventor： Zhen Hua Liu , Beda C. Hammerschmidt , Sriram Krishnamurthy , Ying Lu , Douglas J. McMahon , Srividya Tata , Vikas Arora
Abstract: Techniques are described herein for leveraging and extending relational data sharding infrastructure to provide comprehensive support for sharding semi-structured and unstructured data, in addition to the relational data, in a single sharded database system. Specifically, techniques are described in which a catalog server pre-gathers all data it needs to answer fetches from a dynamically created temporary lob. In addition, techniques are provided in which a catalog server encodes shard identifiers in lob locators sent to the client. Techniques are provided for pushing down various operators to shard servers.
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公开(公告)号：US20200242158A1
公开(公告)日：2020-07-30
申请号：US16852094
申请日：2020-04-17
Applicant: Oracle International Corporation
Inventor： Zhen Hua Liu , Beda C. Hammerschmidt , Sriram Krishnamurthy , Ying Lu , Douglas J. McMahon , Srividya Tata , Vikas Arora
Abstract: Techniques are described herein for leveraging and extending relational data sharding infrastructure to provide comprehensive support for sharding semi-structured and unstructured data, in addition to the relational data, in a single sharded database system. Specifically, techniques are described in which a catalog server pre-gathers all data it needs to answer fetches from a dynamically created temporary lob. In addition, techniques are provided in which a catalog server encodes shard identifiers in lob locators sent to the client. Techniques are provided for pushing down various operators to shard servers.
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Patent Agency Ranking
公开(公告)号：US20190102476A1
公开(公告)日：2019-04-04
申请号：US15848737
申请日：2017-12-20
Applicant: Oracle International Corporation
Inventor： Zhen Hua Liu , Beda C. Hammerschmidt , Sriram Krishnamurthy , Ying Lu , Douglas J. McMahon , Srividya Tata , Vikas Arora
IPC: G06F17/30
Abstract: Techniques are described herein for leveraging and extending relational data sharding infrastructure to provide comprehensive support for sharding semi-structured and unstructured data, in addition to the relational data, in a single sharded database system. Specifically, techniques are described in which a catalog server pre-gathers all data it needs to answer fetches from a dynamically created temporary lob. In addition, techniques are provided in which a catalog server encodes shard identifiers in lob locators sent to the client. Techniques are provided for pushing down various operators to shard servers.
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公开(公告)号：US11907251B2
公开(公告)日：2024-02-20
申请号：US15690894
申请日：2017-08-30
Applicant: ORACLE INTERNATIONAL CORPORATION
Inventor： Lakshminarayanan Chidambaran , Srividya Tata , Geeta Arora , Rajendra S. Pingte , Sneha Chandrababu , Ramkrishan Kanodia
CPC classification number: G06F16/27 , G06F16/2219 , G06F16/2282
Abstract: Upon receiving a query at a local database server from a client directed to a LOB stored at a remote database server, a remote LOB locator is created comprising a local LOB locator indicating the LOB's location and a database link associated with the remote database server. The remote LOB locator is communicated to the client, which submits a request to the local database server to perform an operation directed to the LOB. The request is forwarded to the remote database server using the remote LOB locator, where the operation is performed. This mechanism is extended to work with sharded databases. Character set conversions are minimized when returning data to the client from the remote database server. Remote LOB locators may serve as bind variables for DML statements directed to local or remote tables. Local LOB locators may serve as bind variables for DML statements directed to remote tables.
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公开(公告)号：US11182429B2
公开(公告)日：2021-11-23
申请号：US16852094
申请日：2020-04-17
Applicant: Oracle International Corporation
Inventor： Zhen Hua Liu , Beda C. Hammerschmidt , Sriram Krishnamurthy , Ying Lu , Douglas J. McMahon , Srividya Tata , Vikas Arora
Abstract: Techniques are described herein for leveraging and extending relational data sharding infrastructure to provide comprehensive support for sharding semi-structured and unstructured data, in addition to the relational data, in a single sharded database system. Specifically, techniques are described in which a catalog server pre-gathers all data it needs to answer fetches from a dynamically created temporary lob. In addition, techniques are provided in which a catalog server encodes shard identifiers in lob locators sent to the client. Techniques are provided for pushing down various operators to shard servers.
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公开(公告)号：US11182428B2
公开(公告)日：2021-11-23
申请号：US16852075
申请日：2020-04-17
Applicant: Oracle International Corporation
Inventor： Zhen Hua Liu , Beda C. Hammerschmidt , Sriram Krishnamurthy , Ying Lu , Douglas J. McMahon , Srividya Tata , Vikas Arora
Abstract: Techniques are described herein for leveraging and extending relational data sharding infrastructure to provide comprehensive support for sharding semi-structured and unstructured data, in addition to the relational data, in a single sharded database system. Specifically, techniques are described in which a catalog server pre-gathers all data it needs to answer fetches from a dynamically created temporary lob. In addition, techniques are provided in which a catalog server encodes shard identifiers in lob locators sent to the client. Techniques are provided for pushing down various operators to shard servers.
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公开(公告)号：US20200242157A1
公开(公告)日：2020-07-30
申请号：US16852085
申请日：2020-04-17
Applicant: Oracle International Corporation
Inventor： Zhen Hua Liu , Beda C. Hammerschmidt , Sriram Krishnamurthy , Ying Lu , Douglas J. McMahon , Srividya Tata , Vikas Arora
Abstract: Techniques are described herein for leveraging and extending relational data sharding infrastructure to provide comprehensive support for sharding semi-structured and unstructured data, in addition to the relational data, in a single sharded database system. Specifically, techniques are described in which a catalog server pre-gathers all data it needs to answer fetches from a dynamically created temporary lob. In addition, techniques are provided in which a catalog server encodes shard identifiers in lob locators sent to the client. Techniques are provided for pushing down various operators to shard servers.
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