In the prior blog post, I provided a checklist of some metrics that would help you assemble your defense if it was asserted that your database was the source of performance problems. But those ratios and indicators are just circumstantial evidence of probable innocence. Here comes the DNA test. It’s hard. It’s time consuming. It’s complex. But the analytical effort just might help get you out of the hot seat and properly direct a performance issue to application or networking teams...

QUESTION 37

A database administrator successfully changes the value of the SORTHEAP database configuration parameter while a running application is accessing the database. When will the application see the effects?

A. When a new SQL statement is executed.
B. When a new transaction is started.
C. When a new database connection is established.
D. When the application terminates and is restarted.

QUESTION 38

Given the following CREATE TABLESPACE statement:

CREATE REGULAR TABLESPACE payroll_ts
MANAGED BY AUTOMATIC STORAGE
EXTENTSIZE 32
PREFETCHSIZE 128

Which of the following statements is NOT true?

A. When created, the PAYROLL_TS table space will be a DMS table space with file containers.
B. The database the PAYROLL_TS table space is to be created for must be enabled for automatic storage.
C. Then created, the PAYROLL_TS table space will be an SMS table space with directory containers.
D. The MANAGED BY AUTOMATIC STORAGE clause is unnecessary and could have been left out of the CREATE TABLESPACE command.

Now that the IBM Database Magazine wiki is back from a brief cloud-induced hiatus (so long, StikiPad), you're invited to help document the achievements of your favorite IBM database technologies in its pages.

QUESTION 35
Which of the following commands will restore a database using information found in the recovery history log file?

A. RESTART DATABASE
B. RESTORE DATABASE
C. RECOVER DATABASE
D. REBUILD DATABASE

QUESTION 36
Which of the following database privileges are NOT automatically granted to the group PUBLIC when a database is created?

A. CONNECT
B. BINDADD
C. IMPLICIT_SCHEMA
D. CREATE_EXTERNAL_ROUTINE

QUESTION 33
Which of the following objects can NOT be created from the Control Center?

A. Buffer pool
B. Event monitor
C. Trigger
D. User-defined Function

QUESTION 34
Which of the following IMPORT command options will cause the Import utility to acquire a table-level lock after every commit?

A. ALLOW NO ACCESS
B. ALLOW READ ACCESS
C. ALLOW WRITE ACCESS
D. ALLOW FULL ACCESS

QUESTION 31
Which of the following commands will recommend and make configuration changes for an instance named DB2INST1?

A. AUTOCONFIGURE USING db2inst1 APPLY
B. AUTOCONFIGURE USING mem_percent 60 APPLY db2inst1
C. AUTOCONFIGURE USING mem_percent 60 APPLY DBM ONLY
D. AUTOCONFIGURE USING mem_percent 60 APPLY DB AND DBM

QUESTION 32
If the following CREATE DATABASE command is executed:

CREATE DATABASE sales ON /mnt/data1, /mnt/data2
COLLATE USING IDENTITY
CATALOG TABLESPACE MANAGED BY SYSTEM USING (‘mnt/syscat’);

Which of the following statements is NOT true about the resulting database?

A. Automatic storage is enabled for the database
B. An SMS table space will be used to hold the system catalog
C. User data will be stored on /mnt/data1 and /mnt/data2
D. Metadata for the database will be stored on /mnt/data2