Oracle Database 10g R2: Administering RAC : 1Z0-048 Exam

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Oracle 1Z0-048 Exam Syllabus Topics:

Oracle Database 10g R2: Administering RAC Sample Questions:

1. Read the following statements about the ASM and OCFS file systems:
1) t is compatible with Oracle 9i and Oracle 10g.
2) t is one of the solutions for managing Oracle binaries in a RAC environment.
3) t relies on storage hardware or host-based RAID functionality to support high availability.
4) t is a shared storage file system designed to eliminate the need for raw partitions to store
certain files.
5) t is has integrated volume management with superior extent-based striping and mirroring.
6) t is a cluster file system with a volume manager built into the Oracle 10g kernel to manage
Oracle database files.
Identify the correct grouping where Group A represents true statements about ASM and Group B
represents true statements about OCFS.

A) 3 4 Group
B) Group A: 5 6 Group B: 1 2,3,4
C) Group
D) 1 3,4 Group B: 3 4,5
E) 2 3,4 Group
F) Group
G) Group
H) 1 5,6
I) 1 2,5,6

2. You and your colleague are working with Oracle Support on a database instance stability issue. The Oracle Support engineer wants you to issue a crsctl debug log crs ?crsctl debug log crs command to assist you in your troubleshooting assignment. Why does the Oracle Support engineer want you to do this?

A) to list what debugging options are available on the CRS daemon
B) to enable extra debugging on the currently running CRS daemon
C) to enable extra debugging on the CRS daemon the next time the CRS daemon is started
D) to list which debugging options are enabled on the CRS daemon
E) to enable extra debugging on the currently running and CRS daemons as well as those that will run in the future

3. In a RAC environment, you see a steep increase for enq:HW- contention and gc current grant wait events. What would you do to fix this issue?

A) Reduce the time of transactions by committing more often.
B) Reduce the number of updates causing locks on tables accessed by multiple instances.
C) Increase the cache size of sequences.
D) Use larger uniform extent sizes for objects.

4. View the Exhibit.

A Symmetric RAC and Physical Standby Database configuration is set up for a high availability requirement matching the one in the exhibit with the primary using 'maximum availability' protection mode.
Which two benefits are there for each primary instance in sending its redo to a corresponding standby instance, rather than having all the primary instances sending redo to the same standby apply instance? (Choose two.)

A) If the redo receive load is spread across multiple receiving instances then the primary redo transport is less likely to become a bottleneck.
B) Multiple standby instances allow the redo to be written to standby redo logs more quickly than just using a single receiving instance by reducing commit time on the primary instances.
C) The services on the primary would be symmetric allowing performance on each instance to be equal in the event of a switchover or failover to the standby database.
D) Multiple standby instances allow the redo to be applied more quickly by the standby apply instance after the redo has already arrived from the primary.
E) The workloads of the archive processes on the standby instances would be balanced, thereby allowing load balancing across the cluster where the standby resides.

5. According to the Maximum Availability Architecture, which case is best?

A) Run two identical sites with a primary RAC database on the first site, and only a RAC physical standby database on the second site.
B) Run two identical sites with a primary RAC database on the first site, and non-RAC physical and logical standby databases on the second site.
C) Run two identical sites with a primary RAC database on the first site, and RAC physical and logical standby databases on the second site.
D) Run two identical sites with a primary RAC database on the first site, and only a RAC logical standby database on the second site.

Solutions: