oracle asm failure groups

image of the extent level. Therefore, it is obvious that it is unwise to use disks of different capacities for each failure group, because problems may occur when Oracle allocates the next extent. In normal redundancy mode, each extent allocated in the ASM environment has a primary copy and a second copy, the ASM algo

---------------------------------------------------------------------ClusterResources---------------------------------------------------------------------Ora.cssd1Online online Rac1Ora.diskmon1 OFFLINE OFFLINEOra.evmd1 ONLINEONLINE Rac15) Incorrect permissions for Oracle users[[email protected] ~]# ID OracleUID=1101 (Oracle)gid=1000 (Oinstall)groups=1000 (Oinstal

Oracle 11G Single Instance uses asm, and test the migration of data files to other disk groups 1. configure/etc/hosts network vi/etc/hosts192.168.1.181 asm asm.oracle.com 1. disable FIREWALL 2. disable SElinux vi/etc/selinux/config => SELINUX = disabled 2. create a user and group groupadd-g 5000 asmadmingroupadd-g 5001

/controlfile/current.258.871040903finished Restore at 2015/02/07 11:48:26rman> rman> rman> SQL ' ALTER DATABASE mount '; SQL Statement:alter database mountreleased Channel:ora_di sk_1rman> SQL ' ALTER DATABASE open '; SQL Statement:alter database openrman> exitrecovery Manager complete. [[emailprotected] ~]$ sqlplus/as sysdbasql*plus:release 11.2.0.3.0 Production on Sat Feb 7 11:49:10 2015Copyright (c) 1982, Oracle. All rights reserved. Connected to:o

-wmp_4-s_2245092812.jpg "title=" 1.jpg "alt=" Wkiom1jcqucc5dotaaukrmgxfba493.jpg-wh_50 "/>3 database files in ASM Disk groups are detected using the North Asia Oracle File Detection ToolFigure II:650) this.width=650; "Src=" https://s2.51cto.com/wyfs02/M02/8F/63/wKiom1jcqVmCVfHaAAMZLrk4NWg816.jpg-wh_500x0-wm_ 3-wmp_4-s_2749355690.jpg "title=" 2.jpg "alt=" Wkiom1jc

.png "title=" 1.png "alt=" Wkiom1mpabhdok6aaac-iq-zgiy446.png-wh_50 "/>3 database files in ASM Disk groups are detected using the North Asia Oracle File Detection ToolFigure II:650) this.width=650; "Src=" https://s2.51cto.com/wyfs02/M02/A4/59/wKioL1mpAaij_8sWAABtXHZSM9A990.png-wh_500x0-wm_ 3-wmp_4-s_2632545018.png "title=" 2.png "alt=" Wkiol1mpaaij_8swaabtxhzsm9a

About Oracle ASM instances About Oracle ASM disk groups About grouping and failure groups About Oracle

ORACLE uses the ASM storage. When creating a database, the redundant attribute of the disk group uses EXTERN. To change the disk group to NORMAL, perform the following steps: ORACLE uses the ASM storage. When creating a database, the redundant attribute of the disk group uses EXTERN. To change the disk group to NORMAL,

(I) management principles of ASM disk groups ① impact of disk addition or deletion When a disk is added or deleted from a disk group, ASM can automatically balance the disk.For normal delete operations (without the force option), the deleted disk will not be released immediately before the data on the disk is effectively processed.Similarly, when a new disk is ad

the extended cluster relative to this node. However, in a RAC database, a failure group set to give priority to reading data for one node may be selected for another node, so don't worry, the parameter settings of each instance read-ahead failure group can be specified separately. Note: By default, when you create a disk group, each disk in the disk group belongs to a failed group.

ASM. Any files created by ASM are automatically deleted once they are no longer needed. However, ASM does not manage binary files, trace files, warning logs, and password files.5) data redundancyASM can achieve data redundancy through the disk group image without third-party tools.6) support for various Oracle data fi

Asm creates and deletes disks, disk groups, and rebalance operations, and asmrebalance [grid@lzl1 ~]$ sqlplus / as sysasmSQL*Plus: Release 11.2.0.3.0 Production on Fri Oct 20 15:20:44 2017Copyright (c) 1982, 2011, Oracle. All rights reserved.Connected to:Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit ProductionWith the Real Application Clust

DBCA Does not Display ASM Disk Groups in?11.2https://oraclehowto.wordpress.com/2011/08/15/dbca-does-not-display-asm-disk-groups-in-11-2/Posted by Cloeffel on August 15, 2011I get this problem if trying to create a database with a different user than grid user.I ' ve installed grid infrastructure with user Grid, and I a

instance uses a dedicated ASM instance, and we force the ASM instance to stop working to simulate the failure, so the DB instance is reconnected to an existing ASM instance on another node (in this case, Node 2 (RAC2)).Oracle Database 11.2 or earlier versionsAs described in

only mirror to DISK3 or 4, and vice versa. So for normal redundancy, if you want to be able to tolerate a few disks are not available at the same time, then you can define these disks as a fault group, it is OK. For normal redundancy, all extend of a fault group have and only one copy of the mirror in the other fault group. For high redundancy, all extend of a fault group, with only two copies of Mirror, are distributed in different fault groups. The

Symptom: Oracle GridInfrastructure 11gR2 is installed on a single instance database for creating ASM for the standby database. However, the Create asm gui is displayed after you log on to the grid user to execute the ASMCA command, an error occurs when you execute create ASM after simple configuration:

Oracle ASM introduction and installation of Linux5.2 + Oracle10g + ASM Process 1) The reason for ASM (Automatic Storage Management: ASM is a new feature in Oracle 10g R2 to simplify the management of

First, ASM (Automated storage Management): ASM is a new feature of Oracle 10g R2 to simplify the management of Oracle databases, a volume manager delivered by Oracle itself, primarily to replace the LVM provided by the operating system. Not only does it support single inst

ASM (Automatic Storage Management) is a new feature introduced in oracle10g R2 to simplify the management of Oracle databases, which is Oracle's own volume manager, which is used primarily to replace the LVM provided by the operating system. It not only supports single instances, but also supports RAC very well.First, the Origin of ASMASM is a new feature introduced in