To make DMP devices visible to ASM

1. From ASM, make sure ASM_DISKSTRING is set to the value /dev/vx/rdmp/*.

   SQL> show parameter ASM_DISKSTRING;
   	NAME                 TYPE        VALUE
   	-------------------- ----------- ---------------
   	asm_diskstring       string      /dev/vx/rdmp/*

2. As root user, enable DMP devices for use with ASM.

   # vxdmpraw enable username groupname [devicename ...]

   For example:

   # vxdmpraw enable oracle dba eva4k6k0_1

3. From ASM, confirm that ASM can see these new devices.

   SQL> select name,path,header_status from v$asm_disk;
   
   		NAME	PATH	HEADER_STATU
   		---------------------------------------------------
   		...	.......					....
   			/dev/vx/rdmp/eva4k6k0_1			CANDIDATE
   		...	.......					....