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
Edition Release 11.2.0.4.0-64bit productionwith The partitioning, OLAP, Data Mining and Real Application testing optionssql> select * from tab; Tname tabtype clusterid-----------------------------------------------t_xifenfei1 tablet_xifenfei3 tablesql> Select COUNT (*) from T_XIFENFEI1; COUNT (*)---------- 86275sql> Select COUNT (*) from T_xifenfei3; COUNT (*)---------- By validating the data, the CPFL perfectly skips th
Fix for Linux file system error Ddrescue replace DD Recovery software backup Super blockA recently processed Linux server power outage causes the file system to not read and write, the data is not availableExample, now summarizes the Linux file system error repair method.EXT3-FS error (device Hda3) in Start_transaction
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
This article describes how to use the Rman tool to automatically back up the control file dump and reply to the database when all the control files are lost;
This article describes how to use the Rman tool to automatically back up the control file dump and reply to the database when all the control files are lost;
This article describes how to use the Rman tool to automatically back up the control
Just one of the problems I had before, today to demonstrate again to restore the problem, to see how to achieve recovery.
[Root@xenserver-ds-testserver04 ~]# Cat/etc/fstabUuid=6f29f0ba-a0ea-4799-bdf4-51570d8354c6/iso_storage EXT4 Defaults 0 0[Root@xenserver-ds-testserver04 ~]# DF-HPFileSystem Size Used Avail use% mounted on/DEV/SDA1 18G 1.8G 16G 11%/Devtmpfs 2.0G 8.0K 2.0G 1%/devTmpfs 2.0G 592K 2.0G 1%/DEV/SHMTmpfs 2.0G 2.1M 2.0G 1%/runTmpfs 2.0G 0 2
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
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
Oracle control file recovery case 1: the solution to the loss of a single control file is very simple. Just copy the Multiplexing Control file to the corresponding path. Case 2: All control files are lost (created using SQL in trace)
Before this experiment, a trace file, alt
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
configuration file is created in the directory. The configuration file creates an instance as follows:
# "#": Its annotation Function
Dbpath = E: \ DB \ mongodb \ data
Port = 27017
Fork = true
Logpath = mongdb. log
Logappend = true
// By default, logs are cleared from the previous logs. If you want to append logs, you can use logappend = true.
Start the process after Configuration:
6. Disable the service:
Directory
1 Fstab Problems2 solutions2.1 use a CD to enter recovery mode2.2 edit fstab in bash2.3 save and restart
1 Fstab Problems
When the fstab file is damaged or lost, the system cannot start properly, as shown in:
2 solutions
2.1 use a CD to enter recovery mode
Load the media, and press F2 to set the optical drive to start when starting:
Save and
trace file
ORA-01110: data file 9: '/u01/app/oracle/oradata/lhz/test01.dbf'
The error message indicates that the data file cannot be verified or the data file cannot be locked.
6. First corrupt data file offline and open the database instance
SQL> alter database datafile '
open state, use the alter database backup controlfile to trace command to back up the control file to the trace file
Two methods are available to control file recovery.
1) Use recover database using backup controlfile in the mount status
2) in the mount status, the trace file
Reference blog:1, Linux vmware Virtual machine increased disk space expansion operation Http://www.net130.com/CMS/Pub/special/special_virtual/special_virtual_cc/2011_02_10_52947.htm2. How to add and use Linux virtual machine disks http://jingyan.baidu.com/article/86f4a73e58583137d7526957.html3. CentOS 6.3 Deployment File recovery Artifact Extundelete http://my.oschina.net/jianweizhang/blog/3743314, Linux RM
K Disk does not open the device hardware fatal error, resulting in the request failed because of this I disk file system internal structure damage caused. To recover the data inside it must be noted that the disk cannot be formatted, or the data will be further damaged. Specific recovery methods look at the textTools/Software: Meteor Data Recovery SoftwareStep 1:
Mysql log file usage and data recovery bitsCN.com
Use and data recovery of mysql log files
I. mysql log type
MYSQL has different types of log files (each storing different types of logs), from which you can query what MYSQL has done and manage MYSQL, these log files are indispensable.
1. The error log records The error information during database startup, opera
the data file
[Oracle @ odb1 ~] $ Vi/u01/app/oracle/oradata/lhz/test01.dbf
3. Enter any characters and save them.
4. Shut down database instances
SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
5. Start the instance
SQL> startup
ORACLE instance started.
Total System Global Area 599785472 bytes
Fixed Size 2098112 bytes
Variable Size 243272768 bytes
Database Buffers 348127232 bytes
Redo Buffers 6287360 bytes
D
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