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为data磁盘组删除当中一个盘(asm external data盘组中有两块盘)
删除磁盘,注意,假设删掉磁盘之后。数据在剩余磁盘中。是否有足够空间存储。假设空间不够。删除工作不会成功。检查空间够不够: select a.GROUP_NUMBER,a.DISK_NUMBER,a.NAME ,decode(sign(a.FREE_MB-d.COLD_USED_MB/ 2),1 ,'Y',- 1,'N' ,'N') from v$asm_diskgroup d,v$asm_disk a where a.GROUP_NUMBER = d.GROUP_NUMBER and a.GROUP_NUMBER = 2; --自己写的语句,假设推断有问题,请一定告知我。谢谢 1.检查磁盘 GROUP_NUMBER GROUP_NAME NAME PATH STATE TOTAL_MB ------------ ---------- -------------------- -------------------- -------- ---------- 0 DATA DATA2 /dev/raw/raw6 NORMAL 8192 5 FRA FRA /dev/raw/raw5 NORMAL 8192 0 DATA DATA /dev/raw/raw4 NORMAL 8192 0 CRS CRS_0002 /dev/raw/raw3 NORMAL 3072 0 CRS CRS_0001 /dev/raw/raw2 NORMAL 3072 0 CRS CRS_0000 /dev/raw/raw1 NORMAL 3072 2.删除 SQL> alter diskgroup data drop disk data2; Diskgroup altered. GROUP_NUMBER GROUP_NAME NAME PATH STATE TOTAL_MB ------------ ---------- -------------------- -------------------- -------- ---------- 0 DATA DATA2 /dev/raw/raw6 DROPPING 8192 5 FRA FRA /dev/raw/raw5 NORMAL 8192 0 DATA DATA /dev/raw/raw4 NORMAL 8192 0 CRS CRS_0002 /dev/raw/raw3 NORMAL 3072 0 CRS CRS_0001 /dev/raw/raw2 NORMAL 3072 0 CRS CRS_0000 /dev/raw/raw1 NORMAL 3072 3.等了一会 GROUP_NUMBER GROUP_NAME NAME PATH STATE TOTAL_MB ------------ ---------- -------------------- -------------------- -------- ---------- 5 FRA FRA /dev/raw/raw5 NORMAL 8192 0 DATA DATA /dev/raw/raw4 NORMAL 8192 0 CRS CRS_0002 /dev/raw/raw3 NORMAL 3072 0 CRS CRS_0001 /dev/raw/raw2 NORMAL 3072 0 CRS CRS_0000 /dev/raw/raw1 NORMAL 3072 注:假设在dropping状态中。忽然反悔了,那么 alter diskgroup data undrop disks; 假设删完了,那就add吧。
为data磁盘组删除当中一个盘(asm external data盘组中有两块盘)