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043-019

原创 Linux操作系统 作者:jbymy2000 时间:2012-03-04 14:07:25 0 删除 编辑
19. You are using an Automatic Storage Management (ASM) instance to m
anage the files of your production database. You have two disk groups
, DG1and DG2 with one device each. In the parameter file of the produ
ction database, the following parameters have been specified:
DB_CREATE_ONLINE_LOG_DEST_1 = '+dg1'
DB_CREATE_ONLINE_LOG_DEST_2 = '+dg2'
What would be the impact of this setting?
A. When a new log group is added, it would have one member in each di
sk group.
B. When a new log group is added, it would have two members in each d
isk group.
C. When a new tablespace is added, it would have one data file in eac
h disk group.
D. When a new log file is added, it would have one member spread acro
ss the disk groups.
Answer: A
DB_CREATE_ONLINE_LOG_DEST_1 = '+dg1'
DB_CREATE_ONLINE_LOG_DEST_2 = '+dg2'
当一个新的日志组加入了以后,会在每个磁盘组中有个成员。
Editor’s notes:
DB_CREATE_ONLINE_LOG_DEST_n (where n = 1, 2, 3, ... 5) specifies the default
location for Oracle-managed control files and online redo logs. If more than one
DB_CREATE_ONLINE_LOG_DEST_n parameter is specified, then the control file or online
redo log is multiplexed across the locations of the other
DB_CREATE_ONLINE_LOG_DEST_n parameters. One member of each online redo log is
created in each location, and one control file is created in each location.

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