本帖最后由 jayli426 于 2015-2-7 20:25 编辑
参考这个文档
http://docs.oracle.com/cd/E11882_01/server.112/e18951/asmdiskgrps.htm#CHDBIFGA
The following statement successfully adds disks /devices/diska5 through /devices/diska8 to data1. Because no FAILGROUP clauses are included in the ALTER DISKGROUP statement, each disk is assigned to its own failure group. The NAME clauses assign names to the disks, otherwise they would have been assigned system-generated names.
ALTER DISKGROUP data1 ADD DISK
'/devices/diska5' NAME diska5,
'/devices/diska6' NAME diska6,
'/devices/diska7' NAME diska7,
'/devices/diska8' NAME diska8;
我不是太理解“Because no FAILGROUP clauses are included in the ALTER DISKGROUP statement, each disk is assigned to its own failure group”这个话的意思
如果按照文档中之前的创建DG的例子
CREATE DISKGROUP data NORMAL REDUNDANCYFAILGROUP
controller1 DISK'/devices/diska1','/devices/diska2','/devices/diska3','/devices/diska4'FAILGROUP
controller2 DISK'/devices/diskb1','/devices/diskb2','/devices/diskb3','/devices/diskb4'ATTRIBUTE
'compatible.asm' = '11.2', 'compatible.rdbms' = '11.2',
'sector_size'='4096';
我的问题现在data有两个FAILGROUP controller1 和controller2
如果我执行ALTER DISKGROUP dataADD DISK '/devices/diska5' NAME diska5,
这个'/devices/diska5'会加入到哪个 FAILGROUP 中呢？
感觉“each disk is assigned to its own failure group”根本给不出答案啊？
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