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IBM DB2 9.7 Advanced DBA for LUW Sample Questions:

1. What would indicate intra-partition parallelism in an Optimizer Plan?

A) BTQ
B) LTQ
C) DTQ
D) IP

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

3. Which option of the ALTER TABLE statement tells the DB2 optimizer to use an index scan on a table that might vary in size at run time from being empty to containing a large number of rows?

A) CARDINALITY VOLATILE
B) INDEXSCAN
C) CURRENT CARDINALITY
D) VOLATILE

4. Which command will prevent prefetching during crash recovery?

A) db2set DB2_RECOVERY_PREFETCHING=YES
B) db2set DB2_RECOVERY_PREFETCHING=NO
C) db2set DB2_AVOID_PREFETCH=ON
D) db2set DB2_AVOID_PREFETCH=OFF

5. When the DBA chooses the dimensions for a multi-dimensional clustering (MDC) table, which two characteristics should be considered? (Choose two.)

A) the combined cardinality of the candidate columns
B) the query transaction rate
C) extent size
D) numeric data versus character data
E) prefetch size

Solutions: