Normally, when the current control file is lost or the current control file is inconsistent with the control file to be restored, we need to re-create a control file or use unsing
Backup controlfile to restore the control file. To put it simply, as long as the backup control file is inconsistent with the current control file to restore the database, you need to use the unsing
:"Consistent snapshot Mode"using rsync to perform file system backups Insufficient :You must close the database when you make a backupWhen a database is distributed across multiple file systems, only the database is shut down long enough to fully backupLarge file after dump Third, Online Backup and instant recoveryThis method combines the backup of the system bac
In the first two articles, we described the backup and recovery solutions for Small and Medium databases using RMAN catalog, all related scripts are provided to simulate Oracle Data guard to a certain extent in a car to reduce database losses on the prod Server caused by hardware faults. This article mainly describes how to restore the changes of the prod database on the Bak server.
support osql, sqlserver2005 and above support both osql and sqlcmd. the following methods are applicable to sqlcmd and osql.
Parameter description:
$ User
$ Passwrod
$ Instance
$ Dbname
$ Filename
$ Diff_filename
User name
Password
Instance name
Database name
Full backup file name
Incremental backup file name
Full
oracle| Backup | notes | recovery
User-defined database backups
Type of Backup
Backup methods
Example
Data files
Operating system commands or tools
C:\COPY Datafile1.ora Datafile.bak
Archive Redo log files
Operating system commands or tools
C:\COPY Log_01_23.arc Log_01_23.bak
Control file
SQL command
Sql>a
Comparison of PostgreSQL database backup and recovery technologies
There are three completely different methods to back up PostgreSQL data:
SQL dump
File System-level backup
Online backup
I. SQL dump
The pg_dump application tool is used to export the current data block as an SQL file. When the database needs to be
1. Preface
As a saying goes, "You must know what it is, but you must know what it is ". But I don't know why. Why. This series of articles will show you how to do it and why it will also be involved. However, due to the limited level, the principle is not profound enough. I hope that the readers can understand the concept.
I have read a lot of materials recently and are also thinking about the value that the technology we are pursuing can bring to this society. It's a bit boring to walk on the r
: to open the database, you must use the RESETLOGS or NORESETLOGS Option
SYS @ orcl # alter database open resetlogs;Alter database open resetlogs*Row 3 has an error:ORA-01194: File 1 requires more recovery to maintain consistencyORA-01110: Data File 1:'/Opt/oracle/oradata/ORCL/datafile/o1_mf_system_8no75lqw _. dbf'
SYS @ orcl #Try to recover:SYS @ orcl # recover database using backup controlfileORA-00279: C
recover data from a icloud backup, you need to delete all the contents of the mobile phone before you can make a backup of the data.
First of all, in the mobile phone settings to select the General Options "Restore", click "Erase All content and Settings", and then restart the phone;
After the phone restarts, in the application and Data window that appears, tap "Restore from icloud Cloud
Backup recovery is an important technology in Oracle. Of course, it is recommended that you do not need this technology, just as you do not need to go to the hospital.
When you open the database, oracle compares the control file with the data file header checkpoint:1. Check whether the checkpoint cnt in the data file header is consistent with the checkpoint cnt in the control file. If so, perform the second
In the first two articles, we described the backup and recovery solutions for Small and Medium databases using RMAN catalog, all related scripts are provided to simulate Oracle Data Guard to a certain extent in a car to reduce database losses on the Prod Server caused by hardware faults. This article mainly describes how to restore the changes of the Prod database on the Bak server.
Small and Medium databas
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
Document directory
14.6 difficult backup and recovery
14.6 difficult backup and recovery
Next we will introduce some difficult problems in backup and recovery.14.6.1 single-user mode problems in
image is: 20090807082 755 ############### start backup and restoration #################### ########## ****************** cold backup and restoration ********** * ******************** DB2 => Backup dB Yan to/home/db2inst1/backupbackup successful. the timestamp for this backup image is: 20090807083306db2 => insert into
SceneAn enterprise server has a database DB01, the database can only be updated every Sunday 0:00 data, and the amount of data is not large, the development of that kind of backup plan more appropriate? How do I set it? What is the method of restoring?Backup ScenariosTake a full backup once every Sunday.Restore ScenariosThe requirements are met in a simple mode,
This article mainly introduces how to implement mysql Backup Recovery and volume sharding in php, including a complete MySQL Backup recovery file and usage example. The annotations contain detailed usage instructions, it is a very practical skill, and a friend in need can
This article mainly introduces how to implement
I. Backup and recovery of dataCopy the existing data and store it on a different server. MySQL provides a lot of backup, common text backup, data backup, SQL backup, etc.1. Text BackupText bac
Tags: permissions tar my.cnf art res backup process basedir InsertXtrabackup Physical backup +binlog full backup
To create a backup directory:#mkdir /back/fullBackup:#innobackupex --user=root --password=‘123‘ /back/full
Full backup
between the primary node and the node to be recovered is reduced to the normal range, and services are started.Configure the operations center to monitor the syncseq differences between the primary and standby nodes, if a node difference reaches a certain threshold, the standby node is forbidden to provide services, if the difference is still not recoverable after a long time, it will trigger the panic recovery process.Data back FileFinally, we intro
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