Patents by Inventor Wei-Ming Hu
Wei-Ming Hu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20170103116Abstract: Techniques are provided for creating, organizing, and maintaining a sharded database. A sharded database can be created using user-defined sharding, system-managed sharding, or composite sharding. The sharded database is implemented with relational database techniques. The techniques described provide improvements to load distribution, organization, query processing, and schema propagation in a sharded database.Type: ApplicationFiled: September 16, 2016Publication date: April 13, 2017Inventors: Wei-Ming Hu, Mark Dilman, Stephen Ball, Ghazi Nourdine Benadjaoud, Leonid Novak, Ilya Taranov, Zheng Zeng
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Publication number: 20170103094Abstract: Techniques are provided for creating, organizing, and maintaining a sharded database. A sharded database can be created using user-defined sharding, system-managed sharding, or composite sharding. The sharded database is implemented with relational database techniques. The techniques described can be used to route database requests and process queries in a sharded database.Type: ApplicationFiled: September 16, 2016Publication date: April 13, 2017Inventors: Wei-Ming Hu, Mark Dilman, Leonid Novak, Ilya Taranov, Zheng Zeng, Jean de Lavarene, Vidya Hegde
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Publication number: 20170103098Abstract: Techniques are provided for creating, organizing, and maintaining a sharded database. A sharded database can be created using user-defined sharding, system-managed sharding, or composite sharding. The sharded database is implemented with relational database techniques. The techniques described can be used for organizing a sharded database using composite sharding.Type: ApplicationFiled: September 16, 2016Publication date: April 13, 2017Inventors: Wei-Ming Hu, Mark Dilman, Ghazi Nourdine Benadjaoud, Ilya Taranov
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Publication number: 20170103092Abstract: Techniques are provided for creating, organizing, and maintaining a sharded database. A sharded database can be created using user-defined sharding, system-managed sharding, or composite sharding. The sharded database is implemented with relational database techniques. The techniques described can be used for load distribution, organization, query processing, and schema propagation in a sharded database.Type: ApplicationFiled: September 16, 2016Publication date: April 13, 2017Inventors: Wei-Ming Hu, Mark Dilman, Leonid Novak, Stephen Ball, Ghazi Nourdine Benadjaoud
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Publication number: 20160306854Abstract: In accordance with an embodiment, described herein are systems and methods for providing direct access to a sharded database. A shard director provides access by software client applications to database shards. A connection pool (e.g., a Universal Connection Pool, UCP) and database driver (e.g., a Java Database Connectivity, JDBC, component) can be configured to allow a client application to provide a shard key, either during connection checkout or at a later time; recognize shard keys specified by the client application; and enable connection by the client application to a particular shard or chunk. The approach enables efficient re-use of connection resources, and faster access to appropriate shards.Type: ApplicationFiled: April 20, 2016Publication date: October 20, 2016Inventors: Vidya Hegde, Jean de Lavarene, Douglas Surber, Mark Dilman, Leonid Novak, Wei Ming Hu, Ashok Shivarudraiah, Tong Zhou, Ilya Taranov
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Publication number: 20160306832Abstract: In accordance with an embodiment, the system enables access to a sharded database using a cache and a shard topology. A shard-aware client application connecting to a sharded database can use a connection pool (e.g., a Universal Connection Pool, UCP), to store or access connections to different shards or chunks of the sharded database within a shared pool. As new connections are created, a shard topology layer can be built at the database driver layer, which learns and caches shard key ranges to locations of shards. The shard topology layer enables subsequent connection requests from a client application to use a fast key path access to the appropriate shard or chunk.Type: ApplicationFiled: April 20, 2016Publication date: October 20, 2016Inventors: Vidya Hegde, Jean de Lavarene, Douglas Surber, Mark Dilman, Leonid Novak, Wei Ming Hu, Ashok Shivarudraiah, Tong Zhou, Ilya Taranov
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Patent number: 9405694Abstract: Techniques are provided for using an intermediate cache between the shared cache of an application and the non-volatile storage of a storage system. The application may be any type of application that uses a storage system to persistently store data. The intermediate cache may be local to the machine upon which the application is executing, or may be implemented within the storage system. In one embodiment where the application is a database server, the database system includes both a DB server-side intermediate cache, and a storage-side intermediate cache. The caching policies used to populate the intermediate cache are intelligent, taking into account factors that may include which object an item belongs to, the item type of the item, a characteristic of the item, or the type of operation in which the item is involved.Type: GrantFiled: September 16, 2014Date of Patent: August 2, 2016Assignee: Oracle Internation CorporationInventors: Kiran Badrinarain Goyal, Neil J. S. Macnaughton, Eugene Ho, Adam Y. Lee, Vipin Gokhale, Wei-Ming Hu, Juan R. Loaiza, Kothanda Umamageswaran, Bharat C. V. Baddepudi, Boris Erlikhman, Alexander Tsukerman, Selcuk Aya, Roger Hansen, Adrian Ng
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Patent number: 9268840Abstract: Techniques are provided to allow users to define a global service that is offered across multiple replicated databases. Database clients connect to and use a global service just as they do with regular services on a single database today. Upon receiving a connection request, a collection of components, referred to collectively as the Global Data Service framework (GDS framework), automatically chooses the best database server instances to which to connect a client. Once those connections have been established, the clients determine which database server instance, of those database server instances to which they are connected, to send requests to based, at least in part, on advisory messages sent to the clients by the GDS framework.Type: GrantFiled: July 31, 2014Date of Patent: February 23, 2016Assignee: Oracle International CorporationInventors: Wei-Ming Hu, Lakshminaray Chidambaran, Mark Dilman, Feroz A. Khan, Bhaskar Mathur, Kevin S. Neel, Leonid Novak, Kant C. Patel, Saravanakumar Ramasubramanian, Michael J. Stewart, Hubert Sun
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Patent number: 9146934Abstract: A method and system for replicating database data is provided. One or more standby database replicas can be used for servicing read-only queries, and the amount of storage required is scalable in the size of the primary database storage. One technique is described for combining physical database replication to multiple physical databases residing within a common storage system that performs de-duplication. Having multiple physical databases allows for many read-only queries to be processed, and the de-duplicating storage system provides scalability in the size of the primary database storage. Another technique uses one or more diskless standby database systems that share a read-only copy of physical standby database files. Notification messages provide consistency between each diskless system's in-memory cache and the state of the shared database files.Type: GrantFiled: November 5, 2013Date of Patent: September 29, 2015Assignee: Oracle International CorporationInventors: Wei-Ming Hu, Juan R. Loaiza, Yunrui Li, Vinay H. Srihari
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Publication number: 20150058290Abstract: Techniques are provided to allow users to define a global service that is offered across multiple replicated databases. Database clients connect to and use a global service just as they do with regular services on a single database today. Upon receiving a connection request, a collection of components, referred to collectively as the Global Data Service framework (GDS framework), automatically chooses the best database server instances to which to connect a client. Once those connections have been established, the clients determine which database server instance, of those database server instances to which they are connected, to send requests to based, at least in part, on advisory messages sent to the clients by the GDS framework.Type: ApplicationFiled: July 31, 2014Publication date: February 26, 2015Inventors: WEI-MING HU, LAKSHMINARAY CHIDAMBARAN, MARK DILMAN, FEROZ A. KHAN, BHASKAR MATHUR, KEVIN S. NEEL, LEONID NOVAK, KANT C. PATEL, SARAVANAKUMAR RAMASUBRAMANIAN, MICHAEL J. STEWART, HUBERT SUN
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Publication number: 20150006813Abstract: Techniques are provided for using an intermediate cache between the shared cache of an application and the non-volatile storage of a storage system. The application may be any type of application that uses a storage system to persistently store data. The intermediate cache may be local to the machine upon which the application is executing, or may be implemented within the storage system. In one embodiment where the application is a database server, the database system includes both a DB server-side intermediate cache, and a storage-side intermediate cache. The caching policies used to populate the intermediate cache are intelligent, taking into account factors that may include which object an item belongs to, the item type of the item, a characteristic of the item, or the type of operation in which the item is involved.Type: ApplicationFiled: September 16, 2014Publication date: January 1, 2015Inventors: Kiran Badrinarain Goyal, Neil J.S. Macnaughton, Eugene Ho, Adam Y. Lee, Vipin Gokhale, Wei-Ming Hu, Juan R. Loaiza, Kothanda Umamageswaran, Bharat C.V. Baddepudi, Boris Erlikhman, Alexander Tsukerman, Selcuk Aya, Roger Hansen, Adrian Ng
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Patent number: 8868831Abstract: Techniques are provided for using an intermediate cache between the shared cache of a database server and the non-volatile storage of a storage system. The intermediate cache may be local to the machine upon which the database server is executing, or may be implemented within the storage system. In one embodiment, the database system includes both a DB server-side intermediate cache, and a storage-side intermediate cache. The caching policies used to populate the intermediate cache are intelligent, taking into account factors that may include which database object an item belongs to, the item type of the item, a characteristic of the item; or the database operation in which the item is involved.Type: GrantFiled: December 7, 2009Date of Patent: October 21, 2014Assignee: Oracle International CorporationInventors: Kiran Badrinarain Goyal, Neil J. S. Macnaughton, Eugene Ho, Adam Y. Lee, Vipin Gokhale, Wei-Ming Hu, Juan R. Loaiza, Kothanda Umamageswaran, Bharat C. V. Baddepudi, Boris Erlikhman, Alexander Tsukerman, Selcuk Aya, Roger Hansen, Adrian Ng
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Patent number: 8838535Abstract: Techniques are provided to allow users to define a global service that is offered across multiple replicated databases. Database clients connect to and use a global service just as they do with regular services on a single database today. Upon receiving a connection request, a collection of components, referred to collectively as the Global Data Service framework (GDS framework), automatically chooses the best database server instances to which to connect a client. Once those connections have been established, the clients determine which database server instance, of those database server instances to which they are connected, to send requests to based, at least in part, on advisory messages sent to the clients by the GDS framework.Type: GrantFiled: October 5, 2012Date of Patent: September 16, 2014Assignee: Oracle International CorporationInventors: Wei-Ming Hu, Lakshminaray Chidambaran, Mark Dilman, Feroz A. Khan, Bhaskar Mathur, Kevin S. Neel, Leonid Novak, Kant C. Patel, Saravanakumar Ramasubramanian, Michael J. Stewart, Hubert Sun
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Publication number: 20140101100Abstract: Techniques are provided to allow users to define a global service that is offered across multiple replicated databases. Database clients connect to and use a global service just as they do with regular services on a single database today. Upon receiving a connection request, a collection of components, referred to collectively as the Global Data Service framework (GDS framework), automatically chooses the best database server instances to which to connect a client. Once those connections have been established, the clients determine which database server instance, of those database server instances to which they are connected, to send requests to based, at least in part, on advisory messages sent to the clients by the GDS framework.Type: ApplicationFiled: October 5, 2012Publication date: April 10, 2014Applicant: ORACLE INTERNATIONAL CORPORATIONInventors: Wei-Ming Hu, Lakshminaray Chidambaran, Mark Dilman, Feroz A. Khan, Bhaskar Mathur, Kevin S. Neel, Leonid Novak, Kant C. Patel, Saravanakumar Ramasubramanian, Michael J. Stewart, Hubert Sun
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Publication number: 20140059020Abstract: A method and system for replicating database data is provided. One or more standby database replicas can be used for servicing read-only queries, and the amount of storage required is scalable in the size of the primary database storage. One technique is described for combining physical database replication to multiple physical databases residing within a common storage system that performs de-duplication. Having multiple physical databases allows for many read-only queries to be processed, and the de-duplicating storage system provides scalability in the size of the primary database storage. Another technique uses one or more diskless standby database systems that share a read-only copy of physical standby database files. Notification messages provide consistency between each diskless system's in-memory cache and the state of the shared database files.Type: ApplicationFiled: November 5, 2013Publication date: February 27, 2014Applicant: Oracle International CorporationInventors: Wei-Ming Hu, Juan R. Loaiza, Yunrui Li, Vinay H. Srihari
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Patent number: 8589361Abstract: A method and system for replicating database data is provided. One or more standby database replicas can be used for servicing read-only queries, and the amount of storage required is scalable in the size of the primary database storage. One technique is described for combining physical database replication to multiple physical databases residing within a common storage system that performs de-duplication. Having multiple physical databases allows for many read-only queries to be processed, and the de-duplicating storage system provides scalability in the size of the primary database storage. Another technique uses one or more diskless standby database systems that share a read-only copy of physical standby database files. Notification messages provide consistency between each diskless system's in-memory cache and the state of the shared database files.Type: GrantFiled: August 30, 2010Date of Patent: November 19, 2013Assignee: Oracle International CorporationInventors: Wei Ming Hu, Juan R. Loaiza, Yunrui Li, Vinay H. Srihari
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Patent number: 8589909Abstract: A method and apparatus for reducing down time in updating applications with metadata is provided. The application contains both code and metadata. A copy of the application is made. A software update is installed on the copy of the application. During installation, the original application continues to run and service users, who may modify the metadata of the original application. Periodically, the metadata of the copy of the application is updated to incorporate changes to the metadata of the original application. When the software update is completed, users are prevented from further modifying the metadata of the original application. The metadata of the copy of the application is updated to incorporate the final changes to the metadata of the original application. Users are redirected from the original application to the copy of the application.Type: GrantFiled: January 10, 2008Date of Patent: November 19, 2013Assignee: Oracle International CorporationInventors: Wei-Ming Hu, Denny McKinney, Marilyn Anne Pratt
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Patent number: 8543862Abstract: A computer is programmed to execute a diagnostic procedure either on a pre-set schedule or asynchronously in response to an event, such as an error message, or a user command. When executed, the diagnostic procedure automatically checks for integrity of one or more portions of data in the computer, to identify any failure(s). In some embodiments, the failure(s) may be displayed to a human, after revalidation to exclude any failure that no longer exists.Type: GrantFiled: November 25, 2011Date of Patent: September 24, 2013Assignee: Oracle International CorporationInventors: Mark Dilman, Michael James Stewart, Wei-Ming Hu, Balasubrahmanyam Kuchibhotla, Margaret Susairaj, Hubert Ken Sun
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Publication number: 20130086330Abstract: A storage device uses non-volatile memory devices for caching. The storage device operates in a mode referred to herein as write-back mode. In write-back mode, a storage device responds to a request to write data by persistently writing the data to a cache in a non-volatile memory device and acknowledges to the requestor that the data is written persistently in the storage device. The acknowledgement is sent without necessarily having written the data that was requested to be written to primary storage. Instead, the data is written to primary storage later.Type: ApplicationFiled: November 3, 2011Publication date: April 4, 2013Applicant: ORACLE INTERNATIONAL CORPORATIONInventors: BHARAT CHANDRA BADDEPUDI, JUAN R. LOAIZA, WEI-MING HU, KOTHANDA UMAMAGESWARAN, ALEX TSUKERMAN, BORIS ERLIKHMAN, J. WILLIAM LEE, JIA SHI, KIRAN B. GOYAL, SELCUK AYA
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Publication number: 20120072770Abstract: A computer is programmed to execute a diagnostic procedure either on a pre-set schedule or asynchronously in response to an event, such as an error message, or a user command. When executed, the diagnostic procedure automatically checks for integrity of one or more portions of data in the computer, to identify any failure(s). In some embodiments, the failure(s) may be displayed to a human, after revalidation to exclude any failure that no longer exists.Type: ApplicationFiled: November 25, 2011Publication date: March 22, 2012Applicant: ORACLE INTERNATIONAL CORPORATIONInventors: Mark Dilman, Michael James Stewart, Wei-Ming Hu, Balasubrahmanyam Kuchibhotla, Margaret Susairaj, Hubert Ken Sun