To troubleshoot a possible hardware problem, you consider moving all disk drives from one
Exadata storage server to a replacement chassis.
You must contain storage availability while performing task.
The Exadata storage server is an X3-8 Database Machine and storage grid is not partitioned.
Which two factors would prevent you from moving the disks from one Exadata storage server to
another one?
A.
The existence of an external redundancy ASM diskgroup
B.
The existence of a normal redundancy ASM diskgroup
C.
The existence of an ASM diskgroup with the repair_time attribute set to 0.
D.
The existence of an ASM diskgroup with its compatible.asm attribute set to 10.2.0.0.0
E.
Offline or inactive celldisks in another Exadata server
Explanation:
A:If you want Oracle ASM to mirror files, specify the redundancy level as NORMAL
REDUNDANCY (2-way mirroring by default for most file types) or HIGH REDUNDANCY (3-way
mirroring for all files). You specify EXTERNAL REDUNDANCY if you do not want mirroring by
Oracle ASM. For example, you might choose EXTERNAL REDUNDANCY if you want to use
storage array protection features.
D:Restoring the redundancy of an Oracle ASM disk group after a transient disk path failure can be
time consuming. This is especially true if the recovery process requires rebuilding an entire Oracle
ASM failure group. Oracle ASM fast mirror resync significantly reduces the time to resynchronize a
failed disk in such situations. When you replace the failed disk, Oracle ASM can quickly
resynchronize the Oracle ASM disk extents.
To use this feature, the disk group compatibility attributes must be set to 11.1 or higher.
Incorrect:
Not C:You can set the DISK_REPAIR_TIME disk group attribute to delay the drop operation by
specifying a time interval to repair the disk and bring it back online.
Note:
*The redundancy levels are:
/External redundancyOracle ASM does not provide mirroring redundancy and relies on the storage system to provide
RAID functionality. Any write error cause a forced dismount of the disk group. All disks must be
located to successfully mount the disk group.
/Normal redundancy
Oracle ASM provides two-way mirroring by default, which means that all files are mirrored so that
there are two copies of every extent. A loss of one Oracle ASM disk is tolerated. You can
optionally choose three-way or unprotected mirroring.
/High redundancy
Oracle ASM provides triple mirroring by default. A loss of two Oracle ASM disks in different failure
groups is tolerated.
Reference:Administering Oracle ASM Disk Groups
My answer should be: A and E
The Options are correct A & D. How Offline or inactive celldisks of another Exadata server affected to move disks from one Exadata Storage to another ? Therefore, option E is obsolete.
I the best exam materials from http://www.exadata-certification.com.
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Mr. Test,
Why are you jealous if someone suggesting some good reference. I recently cleared it with above website all the questions are up to date with 99% accuracy.
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This is for test user.
Forgot to mention material provider …www.exadata-certification.com
For this exam (1z0-027) you need to attend 90 question, so here we have only 70 questions. So please dont trust only on these questions. Treat these questions only as reference.
So many error answers from TestKing.
Is there any prerequisite for taking 1zo 027?
A is wrong. redundancy is not important when moving disks
B is wrong. redundancy is not important when moving disks
C is right. you have to ensure disk_repair_time is long enough
D is right. to use disk_repair_time, compatible.asm has to be 11.1 above
E is wrong. Not applicable.
So C.D. are correct.
A: External redundany is not possible in Exadata, so it is wrong
B: Normal redundancy is OK, but in x3-8 not important, so it is wrong
C: The attribute is called disk_repair_time not repait_time, so it is wrong
D: is right, because the compatible must be equal or higher than 11.1
E: could be a possible right answer, because:
“The ability to take Exadata Storage Server offline without affecting database availability depends on the level of Oracle ASM redundancy used on the affected disk groups, and the current status of disks in other Exadata Storage Servers that have mirror copies of data as Exadata Storage Server to be taken offline.”
(https://docs.oracle.com/cd/E50790_01/doc/doc.121/e51951/storage.htm#DBMMN22021)
So I prefer D and E
Option E says “in ANOTHER EXADATA SERVER”. It does not say “another CELL SERVER”, so E is not correct. Correct answers seem to be A and D
CD I go with L. Zhu
@Max : Please tell me from where you prepared as this site has only 70 questions and examinaton has 90?
Anyone please help here. I need to give exam on next month starting.
Hi AJ,
I am planning to take the exam next month. I have prepared on this side. And the Oracle PDFs I have scanned the relevant portions … see the description from oracle about the exam themes.
Hi Max
Did you completed the certification ? Please guide me on the same.
A: – Add new disks from the new storage;
– Drop disks from the suspect cell; – IF YOU HAVE A DISK FAILURE DURING THE REBALANCE, THE DATA WILL NOT BE TRANSFERED TO THE NEW DISKS BECAUSE EXTERNAL REDUNDANCY DON’T HAVE MIRROR EXTENDS;
D: ASM Fast Mirror Resync requires the minimum compatilble.asm = 11.1
External redundancy is not supported but you can create diskgroup with external redundancy
http://what-when-how.com/Tutorial/topic-816rrqij6/Oracle-Exadata-Recipes-A-Problem-Solution-Approach-122.html
I have cleared with http://www.exadata-certification.com
This is not for advertisement but for someone who actually want to go for the certification.
Out of 90 questions i got 87 questions in the exam.
Can some one please send me the dumps – [email protected]
Just took my Oracle 1Z0-027 exam several days ago! Scored 87% for the second try! (The passing score is 60% now.)
Got 90 questions in total, questions are mainly on Exadata Database Machine, ILOM, RMAN, I/O resource, CellCLI (commands), OLTP…etc.
I used the latest version PassLeader 107q dumps (here it is: http://www.passleader.com/1z0-027.html)
Almost all questions were from it, and some wrong answers have been corrected in that PL 107q dumps, the most valid 1Z0-027 dumps!
Can you please send me the dumps – [email protected]
Hi Jagmeet,
Did you receive any email with has pass leader 107 questions for this 1Z0-027 exam?
All the dumps are having atmost 88 questions.
Thanks,
Vicky
hi carlos,
can you send me the dump at [email protected]
By the way, part of that 107q PassLeader 1Z0-027 dumps are available on Google Drive for free:
https://drive.google.com/open?id=0B-ob6L_QjGLpZ05EYlhnaTd2VGs
(It seems that PL just updated that 107q files…)
Good Luck!!!
Does anyone has the complete dump ?
Andre Lima
I think is A , D .
Carlos.. thank you so much for the complete dumps.. i am preparing for the exam