asap data recovery

First, fault descriptionASM Disk group dropped, ASM instance cannot mount. ASM Disk Group has 4 500G disks, database and ASM software 10.2.0.1, the Oracle database is in urgent need of recovery.Second, fault analysisAnalyze the disks that make up the ASM disk group, remove the ASM metadata, and analyze the metadata: ASM storage metadata is corrupted, causing DiskGroup to mount. Reorganize the ASM storage space, export the database files from the ASM Disk group, and then detect and repair the dat

Mysql Log File Usage and data recovery I. mysql Log types MYSQL has different types of log files (each storing different types of logs ), from these, you can find out what MYSQL has done. For MYSQL management, these log files are indispensable. 1. error log: records errors during database startup, operation, and stop. 2. ISAM operation log (The isam log): records all changes to The ISAM table. This log is o

I. OverviewAs an operator, to ensure that the security of the data is the fundamental responsibility, so in the maintenance of the system, to be careful and careful, but sometimes it is inevitable that the data was mistakenly deleted, this time how to quickly and effectively recover data?1.1. How to use the RM–RF commandUnder the Linux system, how the

saves his or her own global log number). When the outage restarts, each player logs on to detect if there is data loss, if there is data loss to read from the log before the outage failed to save the execution of the message (note: The execution of these messages can not send a message to the client). However, this is a way to log in after a reboot and the user may be stuck, as many downtime users need to

For how recovery works, see the first blog on the Restoration topic:Http://fly1116.blog.51cto.com/8301004/1337681For a brief introduction to the fly. sh script used in the restoration process and other scripts, see the second blog on the Restoration topic:Http://fly1116.blog.51cto.com/8301004/1338316If the database is not in the archive State and there is no backup, you can use the operating system command rm to accidentally delete all

When my colleague retrieved the database, it was Oracle 10 Gb, and the previous deletion method was delete. I don't know how to use trancate. The SCN (System Change Number) is spelled as System Change Number, which is a very important data structure in the database. SCN provides an Oracle internal clock mechanism and can be seen as a logical clock, which is crucial for recovery operations. Note: Oracle only

The first step: Download the Ifonebox for MAC first, you can download the software at the software station. The second step: double click Open, start installation, the old routine, dragged past. The third step: installed, you can scan the data, click Start, but to recover the data, you must purchase the input registration code. You can copy the registration code provided above (pro-Test availa

Extundelete is an efficient data recovery software in Linux. Recommendation: 10-year technical masterpiece: High-Performance Linux Server build Practice II is released across the network, with a trial reading chapter and full-book instance source code download! As an O M personnel, it is the fundamental responsibility to ensure data security. Therefore, you must

Now you pick the data recovery software, nothing more than consider 3 factors: 1 whether to support their own equipment, compatible with a variety of operating systems 2 software operation is simple 3) The effect of recovery is excellent For these three factors, although it seems quite simple, but because some research and development pers

移动磁盘打不开由于IO设备错误，是因为这个I盘的文件系统内部结构损坏导致的。要恢复里面的数据就必须要注意，这个盘不能格式化，否则数据会进一步损坏。具体的恢复方法看正文Tools/software: Star Data Recovery softwareStep 1: First download and unzip the software to run, directly double-click the partition you need to restore, and then right-click the software icon Select "Run as Administrator"Step 2: After the program opens, directly double-click the disk that needs to recover dataStep 3: The sof

Advantages and disadvantages of MySQL log backups Benefits: is to revert to a point in time, or an operation SQL statement Disadvantage: A large log file is generated MySQL log recovery method in Windows 1. Open MySQL LogFind [mysqld] in the My.ini file and add a row below it Log-bin The code is as follows Copy Code [Mysqld]# The TCP/IP Port the MySQL Server would listen onport=3306Log-bin The default log fil

libraries, add build-up statements and use statements--compact Remove comments, suitable for debug output, production without- f flush Binlog log -- Master-data Add binlog log file name level corresponding location point- R backup stored procedure such as- x Lock table- l--lock-tables read-only lock table- D only Back table structure- t Back up data only--single-transaction for innodb Things databa

MySQL uses FRM and IDB files for data recovery sources MySQL Status: version:5.6.*Storage Engine: InnoDB storage engine to restore the database: Skill key to restore the table: Slot_value existing files: Back up all physical files (including ibdata1 and database skill the entire directory) tips: It 's best to find a development machine, Set up an extra MySQL database to avoid affecting other people because

This article mainly introduces a simple tutorial on data import and recovery in MySQL, mainly using the LOADDATA statement, for more information about how to load MySQL data to files backed up from the MySQL database, see the following two simple methods. Load data import DATA