Provided are a database information backup method and recovery method, an electronic device, and a computer-readable storage medium. The backup method includes the following steps: a server receives a backup task instruction and mounts a storage volume to a client; the client receives the mounted storage volume and determines whether the backup task instruction is a full backup, and if so, the client starts a CDP thread, the client starts a VSS to create a volume shadow copy; the client determines whether the backup task instruction is a full backup, and if so, the client backs up valid data in the volume shadow copy, otherwise, the client backs up corresponding data in the volume shadow copy; the server creates a storage volume snapshot and a time point; and the server unloads a mapping mounted by the storage volume.

Techniques for generating a crash-consistent clone of file(s) stored by a distributed file system are described herein. To generate the crash-consistent clone, a coordinator node may identify multiple nodes (e.g., at least a first node and a second node) of the distributed file system that are storing different portions of data of the file. The coordinator node may then send a first command to the multiple nodes to cause each of the multiple nodes to quiesce the file and clone the different portions of the data to generate the crash-consistent clone of the file. The coordinator node may then receive, from the multiple nodes, a status associated with generating the crash-consistent clone of the file. Based at least in part on the status, the coordinator node may send a second command to the multiple nodes to cause each of the multiple nodes to unquiesce the file.

Modifying a clone image of a dataset, including: generating, based on metadata describing one or more updates to a dataset, a tracking copy of replica data on a target data repository; generating, after receiving an indication to begin accepting modifications to the tracking copy of the replica data, a cloned image of the dataset that is modifiable without modifying the tracking copy of the replica data; and responsive to a storage operation directed to the target data repository, modifying the cloned image of the dataset without modifying the tracking copy of the replica data.

Embodiments for optimizing multiple backup operations for a data protection system, by determining a size of a dataset to be saved in each backup operation and an available bandwidth in each transfer window of a plurality of transfer windows for transfer data between a source and destination; then determining an order of the backup operations based on first ordering the backups based on decreasing dataset size and second ordering the transfer windows in order of decreasing bandwidth, and matching the backups to the transfer windows in accordance with the first ordering and second ordering. The optimum time represents a time to initiate the backup operation that results in a shortest data transfer time over all of the transfer windows from as compared to other possible transfer windows in a defined backup period.

Data of a computer system can be secured from malware. During a Primary Operating System (PrimaryOS) run-time, the system determines if the computer system has been compromised and, if so, a Trusted Operating System (TrustedOS) is launched and assumes control of the hardware resources and the software resources of the computer system. The TrustedOS obtains a cryptographic key that is inaccessible to the PrimaryOS. The TrustedOS uses the cryptographic key to disable writing to a first portion of the storage media that includes the first set of logical block addresses. The PrimaryOS can incrementally back-up files to a second set of logical block addresses on a second portion of the storage media. Control of the hardware resources and the software resources is returned to the PrimaryOS.

Techniques herein make and use a pluggable database archive file (AF). In an embodiment, a source database server of a source container database (SCD) inserts contents into an AF from a source pluggable database (SPD). The contents include data files from the SPD, a listing of the data files, rollback scripts, and a list of patches applied to the SPD. A target database server (TDS) of a target container database (TCD) creates a target pluggable database (TPD) based on the AF. If a patch on the list of patches does not exist in the TCD, the TDS executes the rollback scripts to adjust the TPD. In an embodiment, the TDS receives a request to access a block of a particular data file. The TDS detects, based on the listing of the data files, a position of the block within the AF. The TDS retrieves the block based on the position.

A system and method for partitioned snapshot creation of caches in a distributed data grid is provided. The system and method enables a snapshot to be created in a running system without quiescing a cache service. Moreover for each particular partition, execution of read/write requests are not blocked during the period that a snapshot creation task is being performed for the particular partition. The cache service thread continues to execute read requests for all partitions with write requests for the partition under snapshot experiencing delayed response. The system and method reduces the period of time for which partitions are unavailable during a snapshot process and increases the availability of cache services provided by a distributed data grid compared to prior snapshot systems.

A method includes inputting at least one compressed image in a computing system. The method also includes an inplace patching process. Another image is decompressed over the compressed image by a processor. Local variables are stored periodically, receiving restored power after an interruption to the inplace patching, wherein an execution of the inplace patching is resumed at a later time interval by the processor by restoring the local variables. The method also includes completing the inplace patching process of decompressing the image over the inputted compressed image after restoring the local variables.

The invention relates to data recovery technology. An archive connection driver creates a virtual storage medium that is readable by an operating system, with the operating system running antivirus scanning algorithms on the connected virtual storage medium. Corrupted data and malware are deleted and the relevant data blocks repaired in a connected backup. Corrupted data and infected files are restored in marked invalid data in the backup.

A networked computing system comprises a backup node cluster of a backup service in communication with a host database node cluster of a host, a host database at least initially undiscovered by the backup node cluster, one or more processors coupled with memory storing instructions that, when executed, perform operations comprising at least installing a backup agent on at least one node of the host database node cluster, registering the host at the backup service, based on the host registration, triggering a host database discovery process to discover the undiscovered database automatically, the discovery process including a discovery call, in response to the discovery call, receiving metadata relating to the discovered database, and communicating with the discovered database.