regen TDE master key

If you could please help me with a TDE question I would greatly
appreciate it.

 

I need to regenerate the master key as per the PCI audit.

If my wallet password is abc,

I would issue the following

alter system set encryption key identified by 'abc';

 

Now, would I still need to open the wallet with 

alter  system set encryption wallet open authenticated by abc;   ?

or is there a new wallet password?

 

Also, this is a RAC environment, do I need to regen the mater key on all
4 nodes?

 

Do I need to bounce each instance?

 

Thanks

Randy

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