IBM certifications I C2090-541

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IBM C2090-541 Exam Syllabus Topics:

IBM DB2 9.7 DBA for Linux UNIX and Windows Sample Questions:

1. What correctly describes an MDC table rollout cleanup for qualifying DELETE statements after the statement shown below is run?
SET CURRENT MDC ROLLOUT MODE IMMEDIATE

A) MDC rollout optimization is not used. The DELETE statement is processed in the same way as a DELETE statement that does not qualify for rollout.
B) MDC rollout optimization is used. The RID indexes are updated immediately during the delete process. The deleted blocks are available for reuse after an online REORG with the new RECLAIM EXTENTS clause.
C) MDC rollout optimization is not used. The RID indexes are updated immediately during the delete process. The deleted blocks are available for reuse after the transaction commits.
D) MDC rollout optimization is used. The RID indexes are updated immediately during the delete process. The deleted blocks are available for reuse after the transaction commits.

2. A database administrator takes a full backup of the PRODUCTS database every Sunday. During the week, two other backups are taken, one on Tuesday and one on Thursday. The PRODUCTS database is about 800 GB in size, and about 20 percent of the data is modified throughout a week. Assuming that backup times need to be kept to a minimum, which command should be used to produce the Tuesday and Thursday backup images?

A) BACKUP DATABASE products INCREMENTAL DELTA TO /mnt/backup
B) BACKUP DATABASE products TO /mnt/backup
C) BACKUP DATABASE products TO /mnt/backup UTIL_IMPACT_PRIORITY 10
D) BACKUP DATABASE products INCREMENTAL TO /mnt/backup

3. You have a job scheduled to run every Saturday; the scheduler is turned off on Friday and then restarted on Monday. The job scheduled for Saturday is now a job that is scheduled in the past. Which configuration parameters will allow your Saturday job to run when the scheduler is restarted?

A) EXEC_EXP_TASK=NO SCHED_ENABLE=ON
B) AUTORESTART=YES SCHED_ENABLE=ON
C) AUTORESTART=NO SCHED_ENABLE=ON
D) EXEC_EXP_TASK=YES SCHED ENABLE=ON

4. A file named db2advise.in contains the text shown below:
--#SET FREQUENCY 100
SELECT COUNTO FROM employee;
SELECT * FROM employee WHERE lastname='HAAS';
What does the line -#SET FREQUENCY 100 convey when this file is used as input for the Design
Advisor?

A) Executes both SQL statements in the workload file 100 times.
B) Executes the first SOL statement in the workload file 100 times.
C) Executes up to 100 combinations of optimizations for both SQL statements in the workload file
D) Executes an index analysis for the first SQL statement in the workload file 100 times.

5. You are running an IMPORT utility and have specified the option COMMITCOUNT AUTOMATIC Which two reasons will cause the IMPORT utility to COMMIT? (Choose two.)

A) to avoid lock escalation from row level to table level
B) to avoid allocation of secondary log files
C) to avoid running out of active log space
D) to avoid writing uncommitted data back to the database to make room in the buffer pool

Solutions: