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

1. 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 and C3 together, which statement(s) will create index(es) that will provide optimal query performance?

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

2. 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 (c3) INCLUDE (c1, c2, c4);
D) CREATE UNIQUE INDEX xtab1 ON tab1 (c1); CREATE INDEX xtab2 ON tab1 (c2) INCLUDE (c3, c4);

3. A DBA has established connectivity to a DB2 for z/OS database and is exploiting a System z sysplex for load balancing and fault-tolerance. Which series of statements and commands can be issued to ensure that agents remain allocated to help maintain the sysplex server list?

A) UPDATE DBM CFG USING NUM_INITAGENTS 0;
db2stop;
db2start;
B) UPDATE DBM CFG USING NUM_INITAGENTS 200;
db2stop;
db2start;
C) UPDATE DBM CFG USING NUM_POOLAGENTS 200;
db2stop;
db2start;
D) UPDATE DBM CFG USING NUM_POOLAGENTS 0;
db2stop;
db2start;

4. A DBA wants to migrate a DB2 LUW 8.2.2 database to version 9.7 and plans to use currently committed (CC) semantics on an application-by-application basis. Which process will yield the desired results?

A) Migrate the database, then assign the value AVAILABLE to the CURR_COMMIT configuration parameter.
B) Migrate the database, then assign the value ON to the CURR_COMMIT configuration parameter.
C) Set the DB2_USE_CC_SEMANTICS registry variable to APPLICATION, then migrate the database.
D) Set the DB2_USE_CC_SEMANTICS registry variable to YES, then migrate the database.

5. A database and a table space were created using the following commands:

Afterwards, two tables were created in table space TBSP1 and both tables were populated with 100,000 rows. If a DBA decides that database MYDB should use automatic storage, which command(s) are needed to convert both the database and table space TBSP1?

A) ALTER DATABASE mydb ADD STORAGE ON ?mnt/path_1? ?mnt/path_2?
B) ALTER DATABASE mydb AUTOMATIC STORAGE YES ON ?mnt/path_1? ?mnt/path_2?
C) ALTER DATABASE mydb AUTOMATIC STORAGE YES ON ?mnt/path_1? ?mnt/path_2? ALTER TABLESPACE tbsp1 MANAGED BY AUTOMATIC STORAGE;
D) ALTER DATABASE mydb ADD STORAGE ON ?mnt/path_1? ?mnt/path_2? ALTER TABLESPACE tbsp1 MANAGED BY AUTOMATIC STORAGE;

Solutions: