DescriptionA MySQL database server on the line suddenly loses power, causing a system failure to start, and after reinstalling the system, locate the previous MySQL database folder.Problem:Restore the previous MySQL database by copying the file, discovering that the tables in the database could not be found when the program was called, causing the Web site to not access properly.Analysis:1, MySQL database, using Copy file method to restore the database, only support MyISAM engine;2, if there is
1. Brief description of the restoration principleBecause of the more detailed description in the document, here is a simple description. All INNODB data is organized in an indexed manner, and all data is stored in a 16KB block of data. The recovery process is divided into a few steps, decomposing all
on each piece of hard disk, found that a hard disk on the same strip of data and other hard disk obviously different, so initially determine that the hard disk may be the first to drop the line, through the North Asia self-developed RAID verification program to check this strip, found that the hard disk analysis just analyzed the data is the best, So you can identify the hard drive that was first dropped.5
to promote their own professional software, it can repair the Physical Bad Sectors of the hard disk and does not affect the hard disk capacity, resulting in a daily price of more than 10 thousand yuan. Especially when Russia's PC-3000 entered China, this information was even more eye-catching.
[Note: PC-3000 is a commercial professional hard disk repair integrated tool developed by the famous Russian hard disk Laboratory ACE Laboratory, it can crack the instruction set of various types of dedic
now more and more laptops are starting to use sshd Hybrid Drive, what about sshd solid state hybrid drives? where is the advantage? This article will bring you a detailed introduction of sshd Hybrid Drive, as well as the current encounter of sshd fault data recovery ideas. First, what is sshd hybrid drive? As the name implies, a combination of a mechanical hard drive and a solid-state drive, the hybrid d
In December 3, The RAID card of the company's server broke down and the backup system also failed for more than a month. Currently, the databases on the hard disk are considered abnormal by SQL. First, you can use the emergency repair mode to append the request. The other one is not so good. During restoration, the system always prompts "the file ***. MDF header is not a valid database file header. The pageaudit attribute is incorrect ."
I have been searching for a long time and found that ther
Tags: http java os using IO strong file Data arThe job requires that you compare the database (MySQL) data and finish writing the test script. You want to modify a piece of data in a table, and then run the program to see the effect. The correct SQL update table1 set amount = 100 where id=123; . But the actual situation is not written in the Where condition, pres
Select ... into outfile ' path ' backupThis is a very fast recovery, much faster than insert insertion, and unlike backup-rich mysqldump, he can only back up data in a table, and cannot contain the structure of a table. If the table is drop after the backup is complete, the recovery operation cannot be implemented (unless there is a table structure).Mysql> SELECT
Step one: Open your computer's data-dog data recovery software, enter the software main interface, select "Deep Recovery" mode, as shown in the following figure.
Step two: As shown in the following figure, select the disk to be scanned in area 1, and click on the OK Key of area 2 to enter the
As with most storage systems, XIV also offers multiple disaster recovery solutions. XIV Data Recovery Protection (XDRP) has three implementations, synchronous mirroring; asynchronous mirroring; Data migration. In addition, of course, also support flashcopy,volumecopyFirst, synchronous mirroringXDRP is a real-time copy
Tags: SQL statement har ast Zha read error complete one database romIn daily operations, backup of MySQL database is crucial! The importance of the database to the website makes our management of MySQL data not be lost!Then, it is inevitable that people will make mistakes, maybe one day the brain short-circuited to a wrong operation to delete the database, how to do??? The following is a description of the recover
Tags: recovery of Oracle Linux data files being physically deleted by mistakeRapid recovery of Oracle in #加深对Linux句柄的理解/emergency situationsUnlike dropping data files from Oracle, in some cases it may be possible to encounter a database at runtime when the data file is delet
In daily operations, backup of MySQL database is crucial! The importance of the database to the website makes our management of MySQL data not be lost!Then, it is inevitable that people will make mistakes, maybe one day the brain short-circuited to a wrong operation to delete the database, how to do???The following is a description of the recovery scenario after the MySQL database was mistakenly deleted.Fir
Run the DBV command to check whether the data file contains bad blocks before recovery.
dbv file=d:\oracle\oradata\mydb\RONLY.DBF blocksize=8192
You can view the data file number and block number of the bad data block to perform a full table scan on the table, for example:
select count(*) from
Hot copy is to back up data using the mysqlhotcopy command when MySQL or other database services are running. This article explains how to ensure data consistency. Now
Hot copy is to back up data using the mysqlhotcopy command when MySQL or other database services are running. This article explains how to ensure data c
Starting with the Oracle 11GR1 release, Oracle provides a recommended solution for database data file fixes to better enable users to choose a recovery approach
This becomes more and more intelligent, and we just need to follow the Fix Advice wizard.
Environment Oracle Linux as 5.5+oracle 11.2 (archive mode)
1, the situation before the backup
Sql> Conn Fmismain/fmismain
Connected.
Sql> Select COUNT (*
When it comes to data recovery, we can't help but mention the hard disk data structure, file storage principles, and even the operating system startup process. These are the basic knowledge you have to take advantage of when restoring hard disk data. Even if you do not need to recover
When it comes to data recovery, we can't help but mention the hard disk data structure, file storage principles, and even the operating system startup process. These are the basic knowledge you have to take advantage of when restoring hard disk data. Even if you do not need to recover
The main features and features of the Data Recovery Wizard are as follows:
1. Support for recovering lost partitions (that is, rebuilding partitioned tables). During the recovery process, you immediately see the files in the partition that it finds. You can then use these files to determine if the partitions it finds are the partitions you need to recover. You c
[Data recovery failure description]
See
[Data recovery process]
1. Install the Windows 2008R2 system using Dell R720 as the recovery server platform. On the Dell R720 server Nega Dell H200 6G expansion card, connect 2 groups of Dell MD1200 disk arrays on H200. Group A MD
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