Oracle ASM DISKGROUP WILL NOT MOUNT AFTER ADDING DISKS

This environment is using secure file. There is no backup due to customer

ordering wrong hardware from Sun to perform the backup to. Customer tried
to add 8 disks to the diskgroup. One of the disks added was slice2 which
had the partition table for the disk on it. After the add failed and they
realized what had happened they work with System Administrators and
according to customer successfully switched slice2 and slice6. After this
they used the disks to successfully create dummy diskgroup DATA3. The
diskgroup has critical production data and it not mounting is causing the
production database not to mount resulting in significant revenue loss for
the company. As there presently is no backup of this data and they are
using secure file DUL is not an option to extract the data from the failed
diskgroup. The diskgroup will not mount because disks that were just added
cannot be discovered. Last attempt by customer to use AMDU resulted in core
dumps and no AMDU output. Customer is request that the existing disk
headers for the disk be repaired so that they can get the diskgroup mounted
and then add the correct disks to the diskgroup.

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