今天是2014-03-24，介绍一个重命名oracle asm 磁盘组的工具renamedg

The renamedg tool enables you to change the name of a cloned disk group. The disk group must be dismounted on all nodes in the cluster before running renamedg on the disk group.

renamedg renames a disk group using a two-step process:

1. Phase one

   This phase generates a configuration file to be used in phase two.

2. Phase two

   This phase uses the configuration file to perform the renaming of the disk group.

The syntax is:

renamedg {-help | help=true}

renamedg
     [phase={ one|two |both } ] dgname=diskgroup
     newdgname=newdiskgroup [config=configfile]
     [ asm_diskstring=discoverystring, discoverystring ... ]
     [ clean={true|false} ] [ check={true|false} ]
     [ confirm={true|false}] [ verbose={ true|false} ]
     [ keep_voting_files={true|false}]

• phase={