HI all , I would like to be able to "snapshot" primary database and standby that are using ASM. since this is a testing environment , I've option to shutdown both databases and to do cold backup via rman . I was thinking if it will be easier just close the database (shutdown immediate) and backup of the askdism group . assuming the following : 1. I've only one disk in the diskgroup 2. I'll shutdown the asm instance as well