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    • 32. 发明授权
    • Database fragment cloning and management
    • 数据库片段克隆和管理
    • US07890508B2
    • 2011-02-15
    • US11207482
    • 2005-08-19
    • Robert H. GerberBalan Sethu RamanJames R. HamiltonJohn F. LudemanMurali M. KrishnaSamuel H. SmithShrinivas Ashwin
    • Robert H. GerberBalan Sethu RamanJames R. HamiltonJohn F. LudemanMurali M. KrishnaSamuel H. SmithShrinivas Ashwin
    • G06F7/00G06F17/30
    • G06F17/30362G06F11/2094G06F11/2097G06F2201/80
    • Mechanisms and techniques for database fragment cloning and management are provided. A database object, such as a table, rowset or index, is divided into fragments. Each fragment is cloned to create cloned fragments, which operationally are substantially identical to one another. One or more of the cloned fragments may be designated as a primary cloned fragment for performing database operations or as a secondary cloned fragment for serving as backup. Updates to each fragment are implemented on the primary cloned fragment and are then propagated from the primary cloned fragment to the corresponding secondary cloned fragments. A cloned fragment can go offline, becoming unavailable to be updated. When the cloned fragment returns online, the cloned fragment is refreshed with data included in the primary cloned fragment. While being refreshed, the cloned fragment may continue to be updated. The cloned fragment is eligible to be designated as a primary cloned fragment when the refreshing process has been completed.
    • 提供了数据库片段克隆和管理的机制和技术。 数据库对象(如表,行集或索引)被划分成片段。 克隆每个片段以产生克隆的片段,其在操作上基本上彼此相同。 可以将一个或多个克隆的片段指定为用于执行数据库操作的主要克隆片段或用作备份的辅助克隆片段。 对每个片段的更新在主要克隆片段上实现,然后从主要克隆片段扩增到相应的次级克隆片段。 克隆片段可以脱机,不可更新。 当克隆片段返回联机时,克隆片段将使用包含在主克隆片段中的数据进行刷新。 刷新时,克隆片段可能会继续更新。 当刷新过程完成时,克隆片段有资格被指定为主要的克隆片段。
    • 34. 发明申请
    • REMOTE STORAGE AND MANAGEMENT OF BINARY OBJECT DATA
    • 二进制对象数据的远程存储和管理
    • US20090234880A1
    • 2009-09-17
    • US12048753
    • 2008-03-14
    • Pradeep Jnana MadhavarapuRohan KumarMichael J. WarmingtonKevin G. FarleeBalan Sethu Raman
    • Pradeep Jnana MadhavarapuRohan KumarMichael J. WarmingtonKevin G. FarleeBalan Sethu Raman
    • G06F17/30
    • G06F17/30091G06F17/30011
    • Embodiments described herein are directed to the accessing remotely stored binary object data in a binary object store. In one embodiment, a computer system receives a request for a portion of binary object data, sends a query to a database server requesting access to the binary object data, and receives a binary object reference. The binary object reference includes binary object identification data and use characteristics specific to the binary object store. The computer system sends a binary object data access request based on the binary object reference to the binary object store using a binary object store interface, and receives the binary object data corresponding to the binary object data access request. The binary object data comprises a portion of data files. The computer system also sends the received binary object data to the user.
    • 本文描述的实施例涉及在二进制对象存储中访问远程存储的二进制对象数据。 在一个实施例中,计算机系统接收对二进制对象数据的一部分的请求,向请求访问二进制对象数据的数据库服务器发送查询,并接收二进制对象引用。 二进制对象引用包括二进制对象标识数据和特定于二进制对象存储的特性。 计算机系统使用二进制对象存储接口将基于二进制对象引用的二进制对象数据访问请求发送到二进制对象存储,并且接收对应于二进制对象数据访问请求的二进制对象数据。 二进制对象数据包括一部分数据文件。 计算机系统还将接收到的二进制对象数据发送给用户。
    • 35. 发明授权
    • Light weight file I/O over system area networks
    • 系统区域网络上的轻量级文件I / O
    • US07233984B2
    • 2007-06-19
    • US10292678
    • 2002-11-12
    • Ahmed H. MohamedBalan Sethu Raman
    • Ahmed H. MohamedBalan Sethu Raman
    • G06F15/13
    • H04L67/1097H04L67/10H04L69/12H04L69/329
    • An effective I/O protocol for taking advantage of system area network functionality, whether or not a particular application is written to do so, is provided. Transparently to the application, the I/O protocol routes application I/O commands via legacy transmission protocols or via remote direct memory access protocols as appropriate. When communicating via remote direct memory access protocols, the I/O protocol can take advantage of multiple data exchange commands implemented by these protocols to perform the required data exchange. Once an I/O operation has completed, the I/O protocol passes a completion notification to the application using a polling or interrupt construct.
    • 提供了一种有效的I / O协议,用于利用系统区域网络功能,无论是否写入特定应用程序。 透明地,应用程序,I / O协议通过传统传输协议或通过远程直接内存访问协议适当地路由应用程序I / O命令。 当通过远程直接存储器访问协议进行通信时,I / O协议可以利用由这些协议实现的多个数据交换命令来执行所需的数据交换。 一旦I / O操作完成,I / O协议将通过轮询或中断结构将完成通知传递给应用程序。
    • 37. 发明授权
    • Method and system for client-side caching
    • 客户端缓存的方法和系统
    • US07089284B2
    • 2006-08-08
    • US10880056
    • 2004-06-28
    • Shishir PardikarJoseph L. LinnBalan Sethu RamanRobert E. Corrington
    • Shishir PardikarJoseph L. LinnBalan Sethu RamanRobert E. Corrington
    • G06F12/08G06F12/00
    • G06F17/30132G06F17/30194G06F17/30902G06F21/6218G06F2221/2141
    • An improved method and system for client-side caching that transparently caches suitable network files for offline use. A cache mechanism in a network redirector transparently intercepts requests to access server files, and if the requested file is locally cached, satisfies the request from the cache when possible. Otherwise the cache mechanism creates a local cache file and satisfies the request from the server, and also fills in a sparse cached file as reads for data in ranges that are missing in the cached file are requested and received from the server. A background process also fills in local files that are sparse, using the existing handle of already open server files, or opening, reading from and closing other server files. Security is also provided by maintaining security information received from the server for files that are in the cache, and using that security information to determine access to the file when offline.
    • 用于客户端缓存的改进方法和系统,可透明缓存合适的网络文件以供离线使用。 网络重定向器中的缓存机制透明地拦截访问服务器文件的请求,如果请求的文件被本地缓存,则尽可能满足缓存的请求。 否则,缓存机制将创建本地缓存文件并满足来自服务器的请求,并且还将稀疏缓存文件填充为从服务器请求和接收的高速缓存文件中缺少的范围内的数据读取。 后台进程还使用已经打开的服务器文件的现有句柄或打开,读取和关闭其他服务器文件来填充稀疏的本地文件。 还通过维护从服务器接收到的缓存中的文件的安全信息来提供安全性,并使用该安全信息来确定在脱机时对文件的访问。