i've a single Oracle 11.2 node with really bad performances and i figure out that there's a lun always running at 100% IO.
This is the "DATA_0000" lun configured in asm in this way
SQL> SELECT name, header_status, path FROM V$ASM_DISK;
NAME HEADER_STATU
PATH
DATA_0000 MEMBER /dev/dm-6
INDICI_0000 MEMBER /dev/dm-7
I'm not a dba at all, but i think this is a really bad configuration causing bad performances. I'm planning to add 2 more luns (same size and storage enclosure as the originals) but i would like to know if is it possibile (without loosing data) to split existing luns between both VG
AS IS
dm-6 => DATA_0000 => DATA 500gb
dm-7 => INDICI_0000 => INDICI 500gb
To BE
dm-6 => DATA_0000
=> INDICI_0001
dm-7 => DATA_0001 => INDICI_0000
Any help would be welcome. Regards