asm connects

Recently encountered a number of ASM data header problems caused disk GROUP can not be normal mount, the database is not working properly, has brought endless trouble, this time thinking, if I did the ASM data header backup How good ah, unfortunately there is no regret medicine, We recommend that you check your own ASM library,

In an Oracle RAC environment, use a grid account to performRun asmcmd into ASM command mode, such as:[Email protected] ~]$ AsmcmdAsmcmd>Asmcmd> du//displays all disk space occupied by ASM files in the specified ASM directoryAsmcmd> Ls-ls//Lists the contents of the ASM directory and their properties, disk space consumpt

Install oracle10g + asm under rhel --- build su-root www.2cto.com mkdir/asmdisk = in unix/linux, all devices are files, so we can create several files to simulate multiple hard disks. Create several files with dd, the size is 1Gdd if =/dev/zero of =/asmdisk/disk1 bs = 1024 k count = 500dd if =/dev/zero of =/asmdisk/disk2 bs = 1024 k count = 500dd if =/dev/zero of =/asmdisk/disk3 bs = 1024 k count = 500dd if =/dev/zero of =/asmdisk/disk4 bs = 1024 k co

Label:2015-10-24DirectoryResources[1] Management and maintenance of ASM under oracle11g RAC[2] Oracle 11g RAC with ASM installed on RHEL5 (simplified version)[3] Oracle 11g r2+rac+asm+oraclelinux6.4 installation details (figure)[4] Oracle11gr2+asm installation detailed operation (i)[5] Oracle 11g R2

There are many discussions about Automatic Storage Management (ASM), but what is ASM? ASM is an effective abstraction layer that enables your Oracle database to be used together with an abstract space called diskgroups, rather than directly using datafiles. This brings many benefits, but it also requires learning new concepts, commands, usage, and management task

Implementation of ASM Resizing in VirtualBox Implement online ASM resizing 1. First disable the Cluster[Root @ node1 bin] #./crsctl stop crs[Root @ node2 bin] #./crsctl stop crs Shutdown, halt Create two vdi disks on the first host, set the sharing, and attach them to node2.Asmn6.vdi 5GAsmn7.vdi 8G 2. Start mounting and create disk partitions for Oracle ASM [Root

Uh, Java bytecode. We have already discussed this in the Understanding Java bytecode article, but continue to deepen the memory: Java bytecode is the binary representation of the source code, the JVM can read and execute bytecode.Bytecode libraries are now widely used in Java, especially when run-time dynamic proxy generation is commonly used in Java EE. Bytecode conversions are also common use cases, such as support for AOP runtime weaving facets, or extensible class overloading techniques prov

Tags: oracle ASM File ReplicationWork, sometimes you need to copy files from ASM to the file system or, in turn, do some maintenance operations, this article describes 4 ways to copy files: CP command in Asmcmd (11g) Dbms_file_transfer Bag Convert or Backup as copy of Rman Ftp These 4 methods are described below1. CP command in Asmcmd (11g)The CP command is a 11g new command that m

Precautions for storage planning before Oracle11g RAC + ASM Installation When should we start to better optimize the performance of Oracle databases ?, Based on my years of practical experience, I think it is best to start with the storage plan before installation. Storage Planning is not about adopting the most advanced technologies, but about adopting the most appropriate business needs. The general principle is as follows: 1. Data Files, backup fil

Today, the core system adds a disk (EMCDMX4) to the ASMdg, and then the two nodes of the database RAC are both crash, which immediately becomes a cold sweat. Check log: NOTE: Diskinmode0x8markedforde-assignmentERROR: diskgroupDGIDX1wasnotmountedORA-15032: notallalterationsperf Today, the core system adds a disk (EMC DMX4) to the ASM dg, and then the two nodes of the database RAC both fall into the crash, which suddenly becomes a cold sweat. Check log: