If you want to load balance your datafile, you can split your datafile into another mount point,
here’s detail step.
1. lsnrctl stop
2. shutdown immediate
3. copy your datafile
cp /$ora_home/$SID/undo/undo01.dbf /$ora_home/$SID/undo1/
cp /$ora_home/$SID/undo/undo02.dbf /$ora_home/$SID/undo2/
cp /$ora_home/$SID/index1/idx01.dbf /$ora_home/$SID/index2/
cp /$ora_home/$SID/index1/idx02.dbf /$ora_home/$SID/index3/
4. startup exclusive mount
5. rename your old datafile path with alter command
alter db rename file ‘/$ora_home/$SID/undo/undo01.dbf’ to ‘/$ora_home/$SID/undo1/undo1.dbf’;
alter […]
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