Patents by Inventor Philip Yam
Philip Yam 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).
-
Patent number: 10635658Abstract: Techniques are provided for diverting, to cloned metadata, live access to original metadata of an application container that is being concurrently upgraded. In an embodiment, a database server stores, within an application container of an application, original metadata that defines objects for use by pluggable databases of the application. The database server receives a maintenance request to adjust the original metadata. The database server creates, in response to receiving the maintenance request, a reference container that contains cloned metadata that is a copy of the original metadata. The database server receives, during or after creating the reference container, a read request to read one of the objects. The database server concurrently performs both of: executing the maintenance request upon the original metadata, and executing the read request upon the cloned metadata of the reference container.Type: GrantFiled: September 15, 2016Date of Patent: April 28, 2020Assignee: Oracle International CorporationInventors: Philip Yam, Thomas Baby, Andre Kruglikov, Kumar Rajamani
-
Patent number: 10621176Abstract: A database server instance automatically detects configuration issues when a pluggable database (PDB) is plugged into a new destination container database (CDB). The database server instance identifies one or more update templates, within the destination CDB, that, when run over the relocated PDB, will update the configuration of the PDB to conform to the configuration of the destination CDB. Instead of requiring an administrator to initiate update scripts from a DBMS kernel to reconfigure a PDB, the DBMS creates the update templates by recording commands run within PDBs in connection with system updates. These recorded update templates may then be run over relocated PDBs, to configure the PDBs according to the configuration of the destination CDB. Further, the update templates may be pre-recorded update templates, which record commands to perform configuration updates, to PDBs, that have never before been performed within the CDB.Type: GrantFiled: September 15, 2016Date of Patent: April 14, 2020Assignee: ORACLE INTERNATIONAL CORPORATIONInventors: Philip Yam, Kumar Rajamani, Jaebock Lee
-
Patent number: 10572551Abstract: In an approach, memory usage within a database management system is optimized by designating an application root which stores data and metadata for database objects that are common across pluggable databases which support the same application. In addition, the application root can be used to manage access to the pluggable databases by defining common users which are created at the application root, but can be used to access any of the member pluggable databases. Furthermore, different versions of the same application can be supported concurrently by maintaining separate application roots for each version. For instance, when an upgrade is applied to the application root, a clone can be created and the update can be applied to the clone. Then, the member pluggable databases which are to be upgraded can be synchronized to the clone, while leaving other pluggable databases servicing the previous version of the application.Type: GrantFiled: October 21, 2016Date of Patent: February 25, 2020Assignee: Oracle International CorporationInventors: Andre Kruglikov, Kumar Rajamani, Thomas Baby, Philip Yam
-
Publication number: 20190278856Abstract: Techniques are provided for diverting, to cloned metadata, live access to original metadata of an application container that is being concurrently upgraded. In an embodiment, a database server stores, within an application container of an application, original metadata that defines objects for use by pluggable databases of the application. The database server receives a maintenance request to adjust the original metadata. The database server creates, in response to receiving the maintenance request, a reference container that contains cloned metadata that is a copy of the original metadata. The database server receives, during or after creating the reference container, a read request to read one of the objects. The database server concurrently performs both of: executing the maintenance request upon the original metadata, and executing the read request upon the cloned metadata of the reference container.Type: ApplicationFiled: September 15, 2016Publication date: September 12, 2019Inventors: Philip Yam, Thomas Baby, Andre Kruglikov, Kumar Rajamani
-
Publication number: 20180075086Abstract: Techniques are provided for diverting, to cloned metadata, live access to original metadata of an application container that is being concurrently upgraded. In an embodiment, a database server stores, within an application container of an application, original metadata that defines objects for use by pluggable databases of the application. The database server receives a maintenance request to adjust the original metadata. The database server creates, in response to receiving the maintenance request, a reference container that contains cloned metadata that is a copy of the original metadata. The database server receives, during or after creating the reference container, a read request to read one of the objects. The database server concurrently performs both of: executing the maintenance request upon the original metadata, and executing the read request upon the cloned metadata of the reference container.Type: ApplicationFiled: September 15, 2016Publication date: March 15, 2018Inventors: Philip Yam, Thomas Baby, Andre Kruglikov, Kumar Rajamani
-
Patent number: 9760658Abstract: A method and apparatus for efficiently managing cached objects is provided. A mapping is a typed relationship between cached objects. A base object contains content, and a mapped object is mapped to a base object when there is a particular relationship between the mapped object and the base object. The type of mapping defines how the objects in the relationship are treated when the mapped object is created, read, or written. At creation time, the mapping type may define how the mapping relationship is recognized. Sometimes recognizing a relationship requires establishing equivalence between the objects. At read and write time, the mapping type may define on which object a mutual exclusion lock is held, which content is returned or which object's content is updated. A wide range of applications can benefit from enhanced object caching performance, and in addition, application may define application-specific semantics on mapping types as well.Type: GrantFiled: October 8, 2009Date of Patent: September 12, 2017Assignee: Oracle International CorporationInventors: Kumar Rajamani, Hochak Hung, Jaebock Lee, Philip Yam
-
Publication number: 20170116334Abstract: In an approach, memory usage within a database management system is optimized by designating an application root which stores data and metadata for database objects that are common across pluggable databases which support the same application. In addition, the application root can be used to manage access to the pluggable databases by defining common users which are created at the application root, but can be used to access any of the member pluggable databases. Furthermore, different versions of the same application can be supported concurrently by maintaining separate application roots for each version. For instance, when an upgrade is applied to the application root, a clone can be created and the update can be applied to the clone. Then, the member pluggable databases which are to be upgraded can be synchronized to the clone, while leaving other pluggable databases servicing the previous version of the application.Type: ApplicationFiled: October 21, 2016Publication date: April 27, 2017Inventors: Andre Kruglikov, Kumar Rajamani, Thomas Baby, Philip Yam
-
Publication number: 20170116235Abstract: A database server instance automatically detects configuration issues when a pluggable database (PDB) is plugged into a new destination container database (CDB). The database server instance identifies one or more update templates, within the destination CDB, that, when run over the relocated PDB, will update the configuration of the PDB to conform to the configuration of the destination CDB. Instead of requiring an administrator to initiate update scripts from a DBMS kernel to reconfigure a PDB, the DBMS creates the update templates by recording commands run within PDBs in connection with system updates. These recorded update templates may then be run over relocated PDBs, to configure the PDBs according to the configuration of the destination CDB. Further, the update templates may be pre-recorded update templates, which record commands to perform configuration updates, to PDBs, that have never before been performed within the CDB.Type: ApplicationFiled: September 15, 2016Publication date: April 27, 2017Inventors: Philip Yam, Kumar Rajamani, Jaebock Lee
-
Patent number: 9239763Abstract: A container database may contain multiple database dictionaries, each database dictionary defining a pluggable database. When database sessions are established on a container DBMS, each database session is given access to a pluggable database by establishing the respective database dictionary of the pluggable database as the database dictionary for that database session. Database commands issued through database session can only access the database objects defined in the database dictionary established for the database session.Type: GrantFiled: September 28, 2012Date of Patent: January 19, 2016Assignee: ORACLE INTERNATIONAL CORPORATIONInventors: Jaebock Lee, Kumar Rajamani, Giridhar Ravipati, Andre Kruglikov, Sanket Jain, Chandrasekharan Iyer, Philip Yam, Yunrui Li
-
Publication number: 20140095530Abstract: A container database may contain multiple database dictionaries, each database dictionary defining a pluggable database. When database sessions are established on a container DBMS, each database session is given access to a pluggable database by establishing the respective database dictionary of the pluggable database as the database dictionary for that database session. Database commands issued through database session can only access the database objects defined in the database dictionary established for the database session.Type: ApplicationFiled: September 28, 2012Publication date: April 3, 2014Applicant: ORACLE INTERNATIONAL CORPORATIONInventors: Jaebock Lee, Kumar Rajamani, Giridhar Ravipati, Andre Kruglikov, Sanket Jain, Chandrasekharan Iyer, Philip Yam, Yunrui Li
-
Patent number: 8521706Abstract: A database may facilitate zero-downtime upgrades by concurrently maintaining multiple editions of database objects for use by both pre-upgrade and post-upgrade clients of a database application. Operations performed within the database are associated with an edition based on, for example, an initiating client or transaction. When an operation references an object or data, the database automatically performs the operation using the object or data associated with the edition with which the operation is itself associated. The database may determine the associated edition without explicit identification of the associated edition in a query or in code. Thus, no client or stored procedure code changes are necessary to reflect a new edition added during an update. Data changes in one edition may be automatically and immediately propagated to the other edition through the use of cross-edition triggers, thereby allowing both pre-upgrade and post-upgrade clients to remain fully functional throughout an upgrade.Type: GrantFiled: October 19, 2007Date of Patent: August 27, 2013Assignee: Oracle International CorporationInventors: David M. Alpern, Alan Choi, Chandrasekharan Iyer, Jaebock Lee, Kumar Rajamani, Shrikanth Shankar, Guhan Viswanathan, William Waddington, Philip Yam
-
Patent number: 8301667Abstract: Disclosed are improved methods, systems, and media for cursor sharing and cursor pruning. According to some approaches, existing child cursors are distinguished using a cursor sharing criteria node structure. A sharing criteria node (also referred to as a “diagnostic” node) is created when a sharing criteria mismatch/failure happens. The node contains information about why the child cursor could not be shared and also information that can be used to quickly re-evaluate this sharing criterion in the future.Type: GrantFiled: February 25, 2010Date of Patent: October 30, 2012Assignee: Oracle International CorporationInventors: Hochak Hung, Kumar Rajamani, Jaebock Lee, Philip Yam
-
Publication number: 20110087642Abstract: A method and apparatus for efficiently managing cached objects is provided. A mapping is a typed relationship between cached objects. A base object contains content, and a mapped object is mapped to a base object when there is a particular relationship between the mapped object and the base object. The type of mapping defines how the objects in the relationship are treated when the mapped object is created, read, or written. At creation time, the mapping type may define how the mapping relationship is recognized. Sometimes recognizing a relationship requires establishing equivalence between the objects. At read and write time, the mapping type may define on which object a mutual exclusion lock is held, which content is returned or which object's content is updated. A wide range of applications can benefit from enhanced object caching performance, and in addition, application may define application-specific semantics on mapping types as well.Type: ApplicationFiled: October 8, 2009Publication date: April 14, 2011Applicant: ORACLE INTERNATIONAL CORPORATIONInventors: Kumar Rajamani, Hochak Hung, Jaebock Lee, Philip Yam
-
Publication number: 20080098046Abstract: A database may facilitate zero-downtime upgrades by concurrently maintaining multiple editions of database objects for use by both pre-upgrade and post-upgrade clients of a database application. Operations performed within the database are associated with an edition based on, for example, an initiating client or transaction. When an operation references an object or data, the database automatically performs the operation using the object or data associated with the edition with which the operation is itself associated. The database may determine the associated edition without explicit identification of the associated edition in a query or in code. Thus, no client or stored procedure code changes are necessary to reflect a new edition added during an update. Data changes in one edition may be automatically and immediately propagated to the other edition through the use of cross-edition triggers, thereby allowing both pre-upgrade and post-upgrade clients to remain fully functional throughout an upgrade.Type: ApplicationFiled: October 19, 2007Publication date: April 24, 2008Applicant: ORACLE INTERNATIONAL CORPORATIONInventors: David M. Alpern, Alan Choi, Chandrasekharan Iyer, Jaebock Lee, Kumar Rajamani, Shrikanth Shankar, Guhan Viswanathan, William Waddington, Philip Yam