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IBM DB2 9.7 Advanced DBA for LUW Sample Questions:

1. 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

2. What determines the degree of inter-partition parallelism used?

A) The value of the DFT_DEGREE database configuration parameter.
B) The number of database partitions and the definition of partition groups.
C) The value of the INTER_PARALLEL Database Manager configuration parameter.
D) The number of database connections and the definition of partitions groups.

3. If LOGSECOND=-1 then which of the following statements is true?

A) An infinite number of overflow log files will be used with archival logging.
B) The database will reserve active log space for transactions that may need to roll back and write log records.
C) You still use LOGPRIMARY and LOGFILSIZ configuration parameters to specify how many log files the database manager should keep in the active log path.
D) You must configure the OVERFLOWLOGPATH configuration parameter if your active log path is not on a raw device.

4. Which data organization schemes are supported?

A) PARTITION BY RANGE and ORGANIZE BY
B) PARTITION BY RANGE and ORGANIZE BY HASH
C) PARTITION BY HASH and ORGANIZE BY RANGE
D) PARTITION BY HASH and ORGANIZE BY

5. Table TAB1 was created using the following statement: CREATE TABLE tab1 (c1 INT, c2 INT, c3 INT, c4 INT, c5 INT); If column C1 is unique and queries typically access columns C1, C2, C3 and C4 together, which statement(s) will create index(es) that will provide optimal query performance?

A) CREATE UNIQUE INDEX xtab1 ON tab1 (c4, c3, c2, c1);
B) CREATE UNIQUE INDEX xtab1 ON tab1 (c1) INCLUDE (c2, c3, c4);
C) CREATE UNIQUE INDEX xtab1 ON tab1 (c1); CREATE INDEX xtab2 ON tab1 (c2) INCLUDE (c3, c4);
D) CREATE UNIQUE INDEX xtab1 ON tab1 (c3) INCLUDE (c1, c2, c4);

Solutions: