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I've two questions.
The environment is Oracle 11gR1 + ASM + two nodes in RAC configuration.
1) I should move two datafiles from a DiskGroup to another in ASM configuration.
These two datafiles (I'm not sure if one of them is an index) are online.
2) I've an index tablespace build with two datafile owned to two different ASM DiskGroups.
I should delete one of them (was the original index datafile, while the other one is an "extension").
Can you suggest me how to proceed in both cases? Should I pay attention in something?
SHould I backup somethink before to execute any action?
Thanks a lot,