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    Session state tracking
    4.
    发明授权
    Session state tracking 有权

    公开(公告)号：US12007941B2

    公开(公告)日：2024-06-11

    申请号：US16147314

    申请日：2018-09-28

    Applicant: Oracle International Corporation

    Inventor： Kevin S. Neel ,  Carol L. Colrain ,  Tong Zhou ,  Arturo Ismael Quinto ,  Jonathan Giloni ,  Douglas Surber ,  Ravi Thammaiah

    IPC: G06F16/14 ,  G06F11/20 ,  G06F16/11 ,  G06F16/21 ,  G06F16/25 ,  H04L67/141 ,  H04L67/142

    CPC classification number: G06F16/122 ,  G06F11/2023 ,  G06F16/21 ,  G06F16/252 ,  H04L67/141 ,  H04L67/142 ,  G06F2201/80

    Abstract: Techniques are disclosed herein for identifying, recording and restoring the state of a database session and various aspects thereof. A session template data structure is generated that includes session attribute values describing various aspects of the session that is established between a client system and a database management system (DBMS and enables the client system to issue to the DBMS commands for execution. Based on the session attribute values, DBMS may generate a template identifier corresponding to the session template data structure. The template identifier may be stored in an association with the session state that it partially (or in whole) represents. In an embodiment, when another state of a session is captured, if the template identifier for the state is the same, then rather than storing the attribute-value pairs for the other state, the template identifier is further associated with the other state. In an embodiment, a request boundary is detected where the session is known to be at a recoverable point. If recovery of the session is needed, the session state is restored, and replay of commands start from this point. Each command replayed is verified to produce the same session state as it produced by the original execution. If the session is determined to be a safe point, then all the commands recorded for replay prior to the safe point may be deleted. In an embodiment, the template is used to set the initial state when borrowing from a session pool. The state tracking is also used to identify that the session can be failed over safely during planned operation as the session is unlikely to drain by itself even when not used.

    LOSSLESS FAILOVER FOR DATA RECOVERY
    10.
    发明公开
    LOSSLESS FAILOVER FOR DATA RECOVERY 审中-公开

    公开(公告)号：US20240111642A1

    公开(公告)日：2024-04-04

    申请号：US17959130

    申请日：2022-10-03

    Applicant: Rubrik, Inc.

    Inventor： Abhishek Kumar ,  Siyuan Sheng ,  Yiying Yu ,  Shaswat Chaubey

    IPC: G06F11/20 ,  G06F9/455 ,  G06F11/14 ,  G06F11/16

    CPC classification number: G06F11/2023 ,  G06F9/45558 ,  G06F11/1469 ,  G06F11/1658 ,  G06F2009/45575 ,  G06F2009/45595 ,  G06F2201/84

    Abstract: Some users of a data management system (DMS) may use multiple computing environments to replicate and store virtual machines (VM)s, such as for backup and recovery purposes. For example, different replication environments may include one or more private data centers, one or more cloud environments or any combination thereof. A user may schedule a failover procedure for an application. A DMS may perform a failover procedure that reduces downtime and eliminates data loss. The DMS may capture and replicate a snapshot of a VM running on a source computing environment to a target computing environment, power down the VM on the source computing environment, capture and replicate a second snapshot of the VM to the target computing environment, and power on the VM at the target computing environment. As the additional snapshot includes a relatively small amount of data replication at the target computing environment may proceed quickly, reducing downtime.

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