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1. 发明授权

EP2956872B1 METHOD AND APPARATUSES FOR HANDLING CONCURRENT ACCESSES TO DATA IN A DIRECTORY 有权
公开(公告)号：EP2956872B1
公开(公告)日：2018-08-08
申请号：EP13704788.2
申请日：2013-02-15
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： MONTEJO AYALA, Marta , INIESTA GONZALEZ, Antonio , NAVAS CORNEJO, Angel
IPC分类号： G06F17/30
CPC分类号： G06F17/30359 , G06F17/30309 , G06F17/30371 , H04L61/1523 , H04L67/32
摘要： The present specification faces the issue of detecting collisions caused by concurrent processes which operate on shared data, without compromising bandwidth and system performance. The present specification provides for: a user data repository that, for one or more requests to read data from different application front-ends, provides the data along with a current version value assigned to the data; a first application front-end that, upon determining a data modification, submits a modification request to the user data repository including a first replace indication with the data to be modified, a delete indication with the current version value received, and a second replace indication with a new version data to assign for the data to be modified; and wherein the user data repository accepts the modification if the current version value received from the application front-end matches the current version value at the user data repository, or rejects it, otherwise.

2. 发明授权

EP2210194B1 LIGHTWEIGHT DIRECTORY ACCESS PROTOCOL (LDAP) COLLISION DETECTION MECHANISM AND METHOD 失效
标题翻译：冲突检测机制和轻量级目录访问协议的程序（LDAP）
公开(公告)号：EP2210194B1
公开(公告)日：2013-04-03
申请号：EP08737415.3
申请日：2008-04-10
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： ALARCON ALONSO, Antonio , BARTOLOME RODRIGO, Maria Cruz , VEGA ARNAEZ, Julio
IPC分类号： G06F17/30
CPC分类号： G06F17/30359

3. 发明公开

EP2565806A1 Multi-row transactions 无效转让
标题翻译： Mehrreihige Transaktionen
公开(公告)号：EP2565806A1
公开(公告)日：2013-03-06
申请号：EP12182274.6
申请日：2012-08-29
申请人： Palantir Technologies, Inc.
发明人： Chang, Allen , Carrino, John Antonio
IPC分类号： G06F17/30
CPC分类号： G06F17/30353 , G06F17/30171 , G06F17/30359 , G06F17/30371 , G06F17/30377
摘要： Techniques are provided for more efficient multi-row atomic, consistent, isolated and durable (ACID)-compliant transactions with snapshot isolation semantics (or just "multi-row transactions" for short). In some embodiments, the techniques are implemented in a computing system that includes a client application, a lightweight in-memory lease-based lock service, a multi-row transaction orchestrator, and an underlying database system. The transaction orchestrator implements a read protocol and a write protocol that provides support to the client application for carrying out multi-row transactions against the underlying database system irrespective of whether the database system itself supports multi-row transactions. The transaction orchestrator explicitly maintains transaction-level locks obtained from the lease-based lock service as part of the transaction protocol. Further, the transaction orchestrator is tolerant to lock service failure and unavailability without compromising ACID-compliance and snapshot isolation guarantees to the client application.
摘要翻译：提供技术用于具有快照隔离语义（或简称“多行事务”）的更高效多行原子，一致，隔离和持久（ACID）事务。在一些实施例中，技术在包括客户端应用程序，轻量级内存中基于租赁的锁定服务，多行事务管理器和底层数据库系统的计算系统中实现。事务管理器实现读协议和写协议，它为客户端应用程序提供支持，用于对底层数据库系统执行多行事务，而不管数据库系统本身是否支持多行事务。交易协调器显式维护从基于租赁的锁定服务获取的事务级别锁作为事务协议的一部分。此外，事务管理器容忍在不影响客户端应用程序的ACID兼容性和快照隔离保证的情况下锁定服务故障和不可用性。

4. 发明公开

EP2191372A4 PARALLEL NESTED TRANSACTIONS IN TRANSACTIONAL MEMORY 有权转让
标题翻译：在EINEM TRANSAKTIONSSPEICHER中的并行GESCHACHTELTE TRANSAKTIONEN
公开(公告)号：EP2191372A4
公开(公告)日：2011-11-02
申请号：EP08832590
申请日：2008-09-16
申请人： MICROSOFT CORP
发明人： MAGRUDER MICHAEL M , DETLEFS DAVID , DUFFY JOHN JOSEPH , GRAEFE GOETZ , GROVER VINOD K
IPC分类号： G06F9/52 , G06F9/46
CPC分类号： G06F9/467 , G06F17/30356 , G06F17/30359 , G06F17/30362
摘要： Various technologies and techniques are disclosed for supporting parallel nested transactions in a transactional memory system. Multiple closed nested transactions are created for a single parent transaction, and the closed nested transactions are executed concurrently as parallel nested transactions. Various techniques are used to ensure effects of the parallel nested transactions are hidden from other transactions outside the parent transaction until the parent transaction commits. For example, versioned write locks are used with parallel nested transactions. When a transactional memory word changes from a write lock to a versioned write lock, an entry is made in a global versioned write lock map to store a pointer to a write log entry that the versioned write lock replaced. When the versioned write lock is encountered during transaction processing, the global versioned write lock map is consulted to translate the versioned write lock to the pointer to the write log entry.
摘要翻译：公开了用于支持事务性存储器系统中的并行嵌套事务的各种技术和技术。为单个父事务创建多个封闭的嵌套事务，并且封闭的嵌套事务作为并行嵌套事务并发执行。使用各种技术来确保并行嵌套事务对父事务之外的其他事务的影响，直到父事务提交为止。例如，版本化的写锁与并行嵌套事务一起使用。当一个事务性内存单词从写入锁定更改为版本化的写入锁定时，将在全局版本的写入锁定映射中进行一个条目，以存储一个指向版本控制写入锁定的写入日志条目的指针。当在事务处理期间遇到版本化的写锁时，请参考全局版本的写锁定映射，以将版本化的写锁定转换为写入日志条目的指针。

5. 发明授权

EP1990738B1 Method and server for synchronizing a plurality of clients accessing a database 有权
标题翻译：一种用于同步访问数据库的多个客户端的方法和服务器
公开(公告)号：EP1990738B1
公开(公告)日：2011-03-09
申请号：EP07009132.7
申请日：2007-05-07
申请人： Software AG
发明人： Kreuder, Heinz
IPC分类号： G06F17/30 , G06F11/14 , G06F9/50
CPC分类号： G06F17/30359 , G06F9/485 , G06F17/30306
摘要： The invention relates to a method of synchronizing a plurality of clients (c0- c5) accessing a database (1), each client (c0 - c5) executing a plurality of tasks on the database (1), wherein the method comprises for each of the clients (c1 - c5) the steps of accumulating (41) the time of one or more tasks performed by the client (c1 - c5) after the issuance of a synchronization request and rejecting (32) a request for the opening of a new task of the client, if the accumulated task time exceeds a maximum accumulated task time (t 1 ).

6. 发明公开

EP1788496A2 Consistent read in a distributed database environment 审中-公开
标题翻译：在分布式数据库环境中一致读取
公开(公告)号：EP1788496A2
公开(公告)日：2007-05-23
申请号：EP07003358.4
申请日：2002-05-29
申请人： Oracle International Corporation
发明人： Ganesh, Amit , Bamford, Roger
IPC分类号： G06F17/30
CPC分类号： G06F17/30548 , G06F17/30359
摘要： Techniques are provided for supplying a data item to a query that must see a particular snapshot of a database. For a plurality of data item versions that reside in a plurality of nodes, CLONE-TIME information is maintained that indicates when for each data item version of the plurality of data item versions, a clone branch to which the data item version belongs, is cloned from the current version of a data item; it is determined which data item versions of the plurality of data item versions contain all changes that must be seen by the query based, at least in part, on the CLONE-TIME information; and a data item version is selected to supply to the query from those data item versions that contain all changes that must be seen by the query.
摘要翻译：提供了用于将数据项提供给必须看到数据库的特定快照的查询的技术。对于驻留在多个节点中的多个数据项版本，保持CLONE-TIME信息，该CLONE-TIME信息指示对于多个数据项版本的每个数据项版本何时克隆该数据项版本所属的克隆分支从当前版本的数据项目; 至少部分地基于克隆时间信息来确定多个数据项版本中的哪些数据项版本包含查询必须看到的所有改变; 并且选择数据项版本以从那些包含查询必须看到的所有改变的数据项版本提供给查询。

7. 发明公开

EP2439640A4 METHOD AND DEVICE FOR DEADLOCK DETECTION OF DATABASE TRANSACTION LOCK MECHANISM 审中-公开
标题翻译：方法和设备的数据库事务锁机构的上锁检测
公开(公告)号：EP2439640A4
公开(公告)日：2015-01-21
申请号：EP10782964
申请日：2010-05-31
申请人： ZTE CORP
发明人： CHEN HEDUI , CHANG ERPENG , LU QINYUAN
IPC分类号： G06F9/46 , G06F9/52 , G06F17/30
CPC分类号： G06F9/524 , G06F17/30359

8. 发明公开

EP2191372A2 PARALLEL NESTED TRANSACTIONS IN TRANSACTIONAL MEMORY 有权转让
标题翻译：并行盒装交易一个交易STORAGE
公开(公告)号：EP2191372A2
公开(公告)日：2010-06-02
申请号：EP08832590.7
申请日：2008-09-16
申请人： Microsoft Corporation
发明人： MAGRUDER, Michael M. , DETLEFS, David , DUFFY, John Joseph , GRAEFE, Goetz , GROVER, Vinod K.
IPC分类号： G06F9/52 , G06F12/00
CPC分类号： G06F9/467 , G06F17/30356 , G06F17/30359 , G06F17/30362
摘要： Various technologies and techniques are disclosed for supporting parallel nested transactions in a transactional memory system. Multiple closed nested transactions are created for a single parent transaction, and the closed nested transactions are executed concurrently as parallel nested transactions. Various techniques are used to ensure effects of the parallel nested transactions are hidden from other transactions outside the parent transaction until the parent transaction commits. For example, versioned write locks are used with parallel nested transactions. When a transactional memory word changes from a write lock to a versioned write lock, an entry is made in a global versioned write lock map to store a pointer to a write log entry that the versioned write lock replaced. When the versioned write lock is encountered during transaction processing, the global versioned write lock map is consulted to translate the versioned write lock to the pointer to the write log entry.

9. 发明公开

EP1758037A3 Time-range locking for temporal databases and branched-and-temporal databases 审中-公开
标题翻译：时间范围锁时间数据库以及支和颞数据库
公开(公告)号：EP1758037A3
公开(公告)日：2008-04-30
申请号：EP06254478.8
申请日：2006-08-29
申请人： Centric Software, Inc.
发明人： Goldring, Robert David , Gorvitovskiy, Yuriy Gennadyevich
IPC分类号： G06F17/30
CPC分类号： G06F17/30551 , G06F17/30351 , G06F17/30359
摘要： A method of accessing a version of a row in a temporal database includes checking at least a timestamp associated with the version of the row against a lock criteria for the row. Based on a result of the checking step, it is determined whether to access the version of the row. The version of the row is accessed without acquiring a lock for the row. Lock criteria include time range lock period.

10. 发明公开

EP1788496A3 Consistent read in a distributed database environment 审中-公开
标题翻译：在分布式数据库环境一致阅读
公开(公告)号：EP1788496A3
公开(公告)日：2007-06-20
申请号：EP07003358.4
申请日：2002-05-29
申请人： Oracle International Corporation
发明人： Ganesh, Amit , Bamford, Roger
IPC分类号： G06F17/30
CPC分类号： G06F17/30548 , G06F17/30359
摘要： Techniques are provided for supplying a data item to a query that must see a particular snapshot of a database. For a plurality of data item versions that reside in a plurality of nodes, CLONE-TIME information is maintained that indicates when for each data item version of the plurality of data item versions, a clone branch to which the data item version belongs, is cloned from the current version of a data item; it is determined which data item versions of the plurality of data item versions contain all changes that must be seen by the query based, at least in part, on the CLONE-TIME information; and a data item version is selected to supply to the query from those data item versions that contain all changes that must be seen by the query.

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