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Environment: centos7.2Software: redis-3.2.10 (yum installation)Scenario One: Before the company's Redis does not open aof mode, has been an RDB mode, but the data is very important, the data can not be lost, so need to open aof, but Redis default is to load data from appendonly.aof, Systemctl start Redis, the database is empty because we don't have a appendonly.aof file, and when you close Redis, the Dump.rdb is emptiedScenario Two: Redis database mig
to try to recover the data in the database by rebuilding the transaction log. If you only have MDF files, the problem is more complicated and we need to rebuild the transaction log directly:1. Create a new database with the same name in SQL Server, and then stop the SQL Server service.2. Overwrite the. mdf file for the new database with the original LDF file and delete its log
Tags: Oracle data file recover State recovery process Querying data File status firstSelect name,status,file# from V$datafile; 2. Close the database and stop monitoringShutdown immediate;3. Open the DatabaseStartup4. Take the Recover status database offline 15 for the data
, basically there should be no question. Thank you.650) this.width=650; "Width=" 799 "height=" 449 "title=" 1.jpg "style=" Width:642px;height:449px;float:none; "src=" http ://s2.51cto.com/wyfs02/m00/84/16/wkiom1eff-7xssyeaabacktog9u925.jpg "alt=" wkiom1eff-7xssyeaabacktog9u925.jpg "/ >650) this.width=650; "Width=" 799 "height=" 449 "title=" 2.jpg "style=" Width:644px;height:449px;float:none; "src=" http ://s2.51cto.com/wyfs02/m02/84/15/wkiol1eff--gqdo6aad2pugoj-a069.jpg "alt=" wkiol1eff--gqdo6aa
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Any database may have certain security risks during its long-term use. For database administrators, a complete set of database backup and recovery mechanisms should not only be intended for the secure operation of computer operating systems. When the database fails, you want to re-establish a complete database, which is called database recovery. The restoration subsystem is an important part of the database
file back) 4. It can be combined with the archiving method to restore the database in the "best state. 5. Low maintenance and high security. However, cold backup also has the following shortcomings: 1. When used separately, only recovery at a certain time point can be provided. 2. During the whole backup process, the database must be backed up instead of other work. That is to say, in the cold backup proce
Error when you open IIS Manager or configure a Web site: The XML format of the configuration file is incorrectand is the applicationhost.config problem, then it must be ApplicationHost.config is destroyed, IIS crashes.The solution is to restore applicationhost.config.Check the ApplicationHost.config file in the C:\Windows\System32\inetsrv\config directory first, it is best to back up a copyUse the AppCmd.ex
To back up the database:pg_dump-h localhost-u root demo02 >/home/arno/dumps/demo02.bakTo recover a database:psql-h localhost-u root-d Demo Backup table:pg_dump-h localhost-u root demo02-t books >/home/arno/dumps/books.bakRecovery table:psql-h localhost-u root-d demo-t Books Psql Copy to/from usage:1. Need to log in to the database using Postgres Super User psql-u postgres-d demo022. Saved/Read folders need to give Postgres user permission to read and write3. Exporting data to a
recover database until cancel, waiting for input because did not understand what is the problem of the choice of auto, the results of the same error, and then consulted the company responsible for Oracle database technology Support engineers, The engineer asked me to send the error files to him, he said very serious, let me put the database, and then the database, control files, redo log files and configuration files back up, and then perform Rman recovery
Tags: keyword--synchronous loading targe out technology OSS based on1. The Redis recovery mechanism If only AOF is configured, the AOF file recovery data is loaded when the reboot is restarted; If both RDB and AOF are configured, the boot is only loaded with AOF file r
Oracle data recovery-if you need to learn how to delete data files due to incorrect OEM operations, refer. Oracle data recovery-if you need to learn how to delete data files due to incorrect OEM operations, refer. Oracle data recovery-if you need to learn how to delete data files due to incorrect OEM operations, refer. A complete group deletion that contains
1, in your computer we install the latest version of the 360 security guards 2. After entering, we will see that a "File recovery" in 360 is shown in the following image 3, now we click on File recovery in the open interface, because the first time using 360 will automatically give us the inst
Prepare toolsPrepare u-depth USB flash drive firstSolution1. u deep U disk boot insert into the computer and then set the u disk boot after entering the interface we select "[02] U deep WIN8 PE Standard edition (New Machine)", as shown in the following figure:2. After entering the pe System, click "windows-hard disk partition-bootice (partition, boot, BCD edit, G4D Edit)", as shown in the following figure:3. In this interface, click "physical disk" and find the targ
Basic Linux and UNIX program development tutorial----- Reading Notes Chapter 4 backup and recovery of the file system1, # tar-CF all.tar *. jpgThis command is to pack all. jpg files into a package named all.tar. -C indicates that a new package is generated.-F specifies the package file name.# Tar-RF all.tar *. gifThis command adds all .gif files to the package of
Startuplog::->record = Readcheckpointrecord (Xlogreader, Controlfile->checkpoint, 1, true)->record = Readrecord (Xlogreader, Controlfile->checkpoint, LOG, true)->record = Xlogreadrecord (Xlogreader, ControlFile- >checkpoint, errormsg);->readoff = Readpageinternal (State,controlfile->checkpoint-(ControlFile-> CheckPoint% Xlog_blcksz), Min (ontrolfile->checkpoint% xlog_blcksz + Sizeofxlogrecord, Xlog_blcksz));->|-- Pageptr=controlfile->checkpoint-(controlfile->checkpoint% Xlog_blcksz) |--targetpag
Redo log files Record Database Change Data. Generally, the failure of redo log files will not cause database data loss, but will affect database recovery. Redo logs can be divided into two statuses: Current online redo logs and non-current online redo logs. 4.1Non-currentRedo (Online redo log)File loss recovery When the database is running, the following error is
Backing up and recovering data is important for managing any data storage system.1, cold backup and recovery-Create a copy of the data file (if you want to stop the MongoDB server), that is, the direct copyMongoDB stores all the data in the data directory, the default is/data/db/(under Windows C:\data\db\), when starting MongoDB can also use--dbpath to specify our own set of data storage directory.Back up M
Linux File System Recovery-Linux Enterprise Application-Linux server application information. The following is a detailed description. [Root @ woody root] # fdisk-l/dev/hda Disk/dev/hda: 5368 MB, 5368709120 bytes 255 heads, 63 sectors/track, 652 cylinders Units = cylinders of 16065*512 = 8225280 bytes Device Boot Start End Blocks Id System /Dev/hda1*1 13 104391 83 Linux /Dev/hda2 14 523 4096575 83 Linux /
First of all, we enter the official website of Jinshan Fast disk, because the fast disk client does not provide the recovery file function. Click to enter, Jinshan Fast disk official website, enter Jinshan fast disk user name, password After landing Jinshan Fast plate, to reach the Jinshan fast plate home, click on the top right corner of the Recycle Bin button, as shown Click the Recycle Bin fla
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