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IBM A2090-544 Exam Syllabus Topics:

IBM Assessment: DB2 9.7 Advanced DBA for LUW Sample Questions:

1. A DBA has configured an Oracle data source in a federated database (that references a table named ORA1). How do you update the statistics for table ORA1 at the federated server?

A) Perform the equivalent of RUNSTATS on ORA1 in Oracle; then drop and re-create the ORA1 nickname.
B) Perform RUNSTATS on the ORA1 nickname at the federated server.
C) Perform the equivalent of RUNSTATS on ORA1 in Oracle; then perform RUNSTATS on the ORA1 nickname.
D) Perform the equivalent of RUNSTATS on ORA1 in Oracle.

2. Which conditions must be met to implement HADR?

A) Operating systems on primary and standby servers need not be the same; DB2 versions must be the same; and the databases need not have the same bit-size (32 or 64 bit).
B) Operating systems on primary and standby servers must be the same; DB2 versions must be the same; and the databases need not have the same bit-size (32 or 64 bit).
C) Operating systems on primary and standby servers must be the same; DB2 versions need not be the same; and the databases must have the same bit-size (32 or 64 bit).
D) Operating systems on primary and standby servers must be the same; DB2 versions must be the same; and the databases must have the same bit-size (32 or 64 bit).

3. Which factor should influence your selection of distribution key(s)?

A) The distribution key(s) should include the longest column(s).
B) The distribution key(s) should include the most frequently accessed XML column(s).
C) The distribution key(s) should include column(s) with the smallest number of distinct values.
D) The distribution key(s) should include the most frequently joined column(s).

4. If the shared sort heap threshold parameter SHEAPTHRES_SHR is set to AUTOMATIC, what will happen?

A) The shared sort memory allocation will be controlled by DB2.
B) All sorts will be done in a temporary table space.
C) All sorts will be done in shared memory.
D) No shared memory is allocated for sorting.

5. 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=7:32
B) DB2_PARALLEL_IO=7:7
C) DB2_PARALLEL_IO=7:64
D) DB2_PARALLEL_IO=7:16

Solutions: