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IBM DB2 9.7 Advanced DBA for LUW Sample Questions:

1. Which statement is true about clustering indexes in a partitioned database?

A) The clustering index column(s) should be prefixed by the partitioning key column(s).
B) The partitioning key column(s) should be added immediately after the column in the clustering index with the highest cardinality.
C) The clustering index column(s) should be suffixed by the partitioning key column(s).
D) The partitioning key column(s) should be added to the clustering index with the INCLUDE option.

2. Which statement is correct about statistical views?

A) A statistical view provides the optimizer with additional correlation statistics.
B) A statistical view holds information about the system catalog statistical tables.
C) A statistical view provides the optimizer with more accurate cardinality estimates.
D) A statistical view is created by executing runstats on a regular view.

3. Your UNIX system administrator has indicated that there appears to be a lot of I/O wait time associated with your database, which is stored in a 7+p RAID array. An investigation reveals the following information: DB2_PARALLEL_IO=*
Tablespace with ID 7 has a single container and is dedicated to the largest table. It has a page size of 16K, an extent size of 32, and a prefetch size of 64.
Which setting would optimize I/O for the largest table?

A) DB2_PARALLEL_IO=7:7
B) DB2_PARALLEL_IO=7:64
C) DB2_PARALLEL_IO=7:16
D) DB2_PARALLEL_IO=7:32

4. If your DB2 server is not responding (hung), and you cannot run DB2 commands from the Command Line Processor, which utility can be used to list the applications currently connected to the database MYDB?

A) db2apptrk
B) db2dart
C) db2acsutil
D) db2pd

5. A journaling application inserts data with continually increasing sequential keys while a clean up process randomly deletes erroneous rows. What can be done to maximize insert performance?

A) Issue a db2set DB2SKIPDELETED=ON command.
B) Issue an ALTER TABLE APPEND ON statement.
C) Issue a db2set DB2MAXFSCRSEARCH=1024 command.
D) Issue an ALTER TABLESPACE EXTEND statement.

Solutions: