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Oracle Database 10g R2: Administering RAC Sample Questions:

1. Which two statements are true in any RAC environment? (Choose two.)

A) A publicly enabled thread can be used by any instance of your RAC database.
B) A redo thread must contain at least two groups of redo log files before it can be enabled.
C) After your redo threads are defined, you cannot add new ones.
D) A RAC database must contain at least two threads of redo log files per instance.
E) A RAC database must contain at most one redo thread for each instance.

2. You have a well-tuned, non-RAC single instance Oracle database with several services, all of which perform perfectly. You plan to migrate the database to RAC in the next two weeks and all file systems would be shared using Oracle Cluster File System. After the migration, you want to perform a test to monitor RAC-specific tuning issues that would not have occurred on a non-RAC database. Which six areas would you monitor to determine whether there are RAC-specific performance problems after migration? (Choose six.)

A) Services with applications that use external tables
B) Services with query-intensive applications relying on full table scans
C) Instance recovery time
D) Interconnect latency
E) Services with applications using local context variables
F) Services with applications that have occasional queries, using index access on modestly sized tables
G) Services with insert-intensive applications that use Oracle sequences for index keys
H) Services with applications that truncate large tables
I) Services with insert-intensive applications that generate their own keys without Oracle sequences

3. View the Exhibit and examine an installation step of Oracle Enterprise Manager Grid Control 10gR2 to manage your RAC installation. You entered the host name but you are not sure about the port number. Thefollowing is the list of port numbers from the host ed-otraclin17b.us.oracle.com:

A) 1521
B) 3938
C) 1158
D) 4889
E) 5561

4. View the Exhibit, which displays the cluster database performance page after the same workload has been executed three times on your cluster without varying any non-Oracle workloads on the cluster. What are the two ways by which you can tell that the corresponding application was better tuned during the second and third execution? (Choose two.)

A) The number of transactions per second is getting higher each time.
B) It takes less time to execute the workload each time.
C) There is less paging each time.
D) The run queue length is going down each time.
E) The database throughput graphic is below the red dashed line during the last execution.

5. Which three statements about quiescing a RAC database are true? (Choose three.)

A) It is possible to take a cold backup while the database is in a quiesced state.
B) The database cannot be opened from another instance until the ALTER SYSTEM QUIESCE?statement finishes execution.
C) The ALTER SYSTEM QUIESCE RESTRICTED and ALTER SYSTEM UNQUIESCE statements affect all instances in a RAC environment.
D) Use the ALTER SYSTEM QUIESCE RESTRICTED statement from a single instance.

Solutions: