About Oracle RAC 11g rebuilding the disk group

The user applied for 3 300G disks to deploy RAC. When I created the DATA disk group in ASMCA, I selected all 3 disks. As a result, the total available space of 900G is only 300GB (check the type of v$asm_diskgroup is normal, total_mb is 900G), now the DBCA database has been established, and there is still 500G of data to be stored in the future. In this case, how to rebuild the DATA disk group?Data files, control files, and parameter files are all in the DATA disk group. Can't you just delete the disk group and rebuild it?Ask for a document for rebuilding the disk group.

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Other Answer 1:

Delete and rebuild very quickly, old iron, it's an empty library anyway, stop the ink, go up a shuttle.

Other Answer 2:

Delete it directly and then ASMCA

DROP DISKGROUP DATA INCLUDING CONTENTS;

Other Answer 3:

Your data files, control files, and parameter files are all in the DATA disk group.
If you delete the disk group directly, your library will not be able to get up.But there are still some missing files on the server that might prevent you from rebuilding the library.Therefore, it is recommended to redo the system and start over, which is safer.

Other Answer 4:

Reinstalling the system is too troublesome

Other Answer 5:

normal means that the redundancy is 3, so the actual space usage is basically divided by 3. If you want to use 900G of space, you can use external redundancy to rebuild the disk group.

If you are worried about the command line risk, you can directly use the graphical delete, asmca goes in to delete the disk group, and then rebuilds directly in the graphical, select external redundancy.

Other Answer 6:

Then use the graphics to delete the library first, then delete the disk group, and then rebuild

Other Answer 7:

Make an rman backup first, and then rebuild the disk group.