OverviewA unit server in Beijing accidentally offline, hot spare disk, replace the offline hard disk. However, the hot spare disk in the process, another hard drive offline, causing hot spare synchronization failed, two sets of RAID array crashes, LVM structure is incomplete, the file system is not working properly, the server data needs to be repaired. Two off-line hard drive detection, found that the first offline hard drive is not recognized, the i
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
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
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
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
uncommitted transactions, or committed but not completed transactions, based on which the instance is automatically restored. So far, the SQL Server database has no instance restoration concept.Media recovery is mainly used to damage database files caused by media faults. When a database file, or some content in a file, or a bad disk partition occurs, or the database is damaged by viruses, data is lost, an
1. First download the fast-dragon data recovery software to the system heaven.
2. After downloading, installs the software to own computer, as long as we according to the hint carries on the operation to be possible.
3. Select the features you want to use when prompted
Mistakenly delete files: As long as you know the file before the path can be restored
Incorrect formatting: Reload
warning (0.01sec)
Records: 3 Duplicates: 0 Warnings: 1
Check whether the insert operation is correct:
Mysql> select * from chanel_following;
+ ------------ +
| Id | uid |
+ ------------ +
| 3 | 69686869 |
| 102/100000 |
| 2132723743/2147483647 |
+ ------------ +
Rows in set (0.00 sec)
Here I did an experiment on int. If you are careful, you will find that the third data I inserted is different from the displayed
If it takes several hours to back up or recover a DB2 database, the backup and recovery solution will be safe in a timely manner. Or an inappropriate solution. Therefore, while considering the security of the backup and recovery solution itself, the efficiency of backup and recovery must also be taken into account. In this article, I will introduce some common te
Tags: import use hang share picture DMI lag ref page ToolWhen TRUNCATE table occurs, how to recover, I believe most people will choose to restore the backup to TRUNCATE table before, and then re-import the data into the formal table.So in SQL Server is not really only this method, of course, this is the content of this article will be introduced, the precondition is the SQL Server full recovery model (bulk-
Open Source Tool TestDisk Data recovery method
Because of the operation error, in the installation of Fedora accidentally format the entire hard drive, resulting in all data loss (later access to relevant information, but the head data loss, sector data is still in), relucta
There are many causes for database destruction, and the degree of severity varies. If you are lucky, it may be a small destruction of one or two tables (for example, if your machine is temporarily suspended due to power failure ). If this is not the case, you may need to replace the entire data directory (for example, if a disk crashes and the data directory is on it ). In other cases,
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