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IBM Assessment: DB2 9.7 DBA for Linux UNIX and Windows 認定 A2090-541 試験問題:

1. Click the Exhibit button.

What does the SQL in the exhibit show?

A) The SQL shows the most frequently used indexes on the SYSIBM.SYSINDEXES table since the last database activation
B) The SQL shows indexes on the SYSIBM.SYSTABLES table that are used for index-only access.
C) THE SQL shows indexes on SYSIBM.SYSINDEXES table that have not been used since the last database activation.
D) The SQL shows the most frequently used indexes on the SYSIBM.SYSTABLES table since the last database activation.

2. 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 used. The RID indexes are updated immediately during the delete process. The deleted blocks are available for reuse after the transaction commits.
B) 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.
C) 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.
D) 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.

3. If a non-recoverable database crashes, how can a DBA successfully restart the database if a table space is damaged and cannot complete crash recovery?

A) The damaged table space will require that the entire database be restored from the latest backup image because the database is non-recoverable and will not be accessible.
B) The database must be restarted using the RESTART DATABASE command with the DROP PENDING TABLESPACES option specified. At that point, the database can be brought on-line and the damaged table space must be dropped and re-created.
C) The damaged table space must be restored from the latest backup image. Once restored from the backup image, the RESTART DATABASE command can be issued to apply all the relevant transactions from the active logs. At that point, the database will come on-line and all table spaces will be synchronized.
D) The damaged table space must be restored from the latest backup and any active transaction logs in the log path can then be applied to it using the TABLESPACE ONLINE option of the ROLLFORWARD DATABASE command. This will bring the table space on-line and synchronize it with the rest of the database.

4. Which three table features can be used concurrently in the same table? (Choose three.)

A) local indexes
B) MDC tables
C) primary key index
D) range-clustered tables
E) partitioned tables

5. Click the Exhibit button.

Refer to the logging configuration parameters shown in the exhibit.
If the active log path was only configured to have enough space for 100 active log files, what will happen if there are currently 100 active log files and DB2 needs to create active log file 101?

A) The database will appear to be hung because the BLK_LOG_DSK_FUL configuration parameter is set to YES. Once some active log files arearchived,the database will resume normal operation.
B) The transaction that prompts DB2 to try and create log file 101 will receive a "log full" error because the active log path is full. The transaction will be rolled back andit's associated application will be forced off.
C) The database will continue normal operation because infinite logging has been enabled and any logs that will not fit in the active log path will automatically be created within the OVERFLOWLOGPATH until logs in the active log path begin to be archived.
D) The transaction that prompts DB2 to try and create log file 101 will receive a "log full" error because the active log space and active log path are both full. The transaction will be rolled back andit's associated application will be forced off.

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