[单选]
When starting up your ASM instance, you receive the following error:

What is the cause of the error?（）

A . The ASM_DISKGROUPS parameter is configured for three disk groups: DGROUP1, DGROUP2, and DGROUP3. The underlying disks for these disk groups have apparently been lost.
B . The format of the ASM_DISKGROUPS parameter is incorrect. It should reference the disk group numbers, not the names of the disk groups
C . The ASM_POWER_LIMIT parameter is incorrectly set to 1. It should be set to the number of disk groups being attached to the ASM instance.
D . The ASM_DISKSTRING parameter is not set; therefore disk discovery is not possible.
E . There is insufficient information to solve this problem.

Your boss at Supportcenter.cn wants you to clarify Oracle 10g. Which statement regarding the usage of redo log files during instance recovery is true？（） Transactions are rolled back using redo log files.。 Transactions are rolled forward using redo log files.。 Transactions are rolled back using redo log files and archived log files.。 Transactions are rolled forward using redo log files and rolled back using redo log files.。管子割刀一般可以割（）以内的各种金属管。 50mm。 80mm。 100mm。 125mm。 A startup company recently lost their critical database due to hardware failure on a Windows 2003 4-way processor server running 32-bit applications and an out-dated backup due to a narrow backup window. To prevent this situation from happening again， the solution proposed must be cost effective， scale to 16-way and allow for future storage expansion. Which TWO of the following options should the consultant recommend？（） Implement Snapshot feature of Storage Manager.。 Implement Flashcopy feature of Storage Manager.。 Provide remote volume mirroring （RVM） feature of Storage Manager.。 Implement MSCS clustering on an x455 attached to a shared Fibre DS4000 SAN fabric.。 Implement MSCS clustering on an x445 attached to a shared Fibre DS4000 SAN fabric.。病毒具有什么重要基本特征。 An electrician needs to know what type of receptacle is required. What is the most up-to-date resource to identify the plug type for the feature code ordered？（） Infocenter。 ITSO Redbooks。 Facts and Features。 System Planning Tool。

When starting up your ASM instance, you receive the following error:

What is the cause of the error?（）

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[单选] When starting up your ASM instance, you receive the following error: What is the cause of the error?（）

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[单选]
When starting up your ASM instance, you receive the following error:

What is the cause of the error?（）