CertBus New Updated C2090-919 Exam Dumps Free Download

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QUESTION NO:3

Which command line utility displays real time statistics about the instance?

A. dbinfo

B. onstat

C. dbschema

D. onmachinfo

Answer: B

QUESTION NO:2

What output is NOT reported by the dbschema utility?

A. The database logging mode.

B. The schemas of remote databases.

C. The table definitions without owner names.

D. Theonspaces commands to re-create your systems\’ dbspaces.

Answer: A

QUESTION NO:8

When a SELECT statement is executed which statement is true?

A. The number and duration of the locks is dependent on the ISOLATION LEVEL.

3

B. If COMMITTED READ isolation is in place then the SELECT will never encounter any locking

errors.

C. Within a transaction the database server will place row or page locks on anonlogging table.

D. If the SELECT is part of an UPDATE cursor then the database server will place an exclusive

lock on the entire dataset.

Answer: A

QUESTION NO:25

Which two options can be used to monitor PDQ resources? (Choose two.)

A. onstat -l.

B. onstat -p.

C. onstat -D.

D. onstat -g ath.

E. SET EXPLAIN output.

Answer: D,E

QUESTION NO:16

Which of the following privileges is NOT valid for a table fragment?

A. ALL

B. INSERT

C. UPDATE

D. CREATE INDEX

Answer: D

QUESTION NO:26

Which statement about updating statistics is NOT true?

A. UPDATE STATISTICS HIGH scans the entire table.

B. Data distributions are updated every time UPDATE STATISTICS LOW is executed.

C. UPDATE STATISTICS operations will benefit by tuning the DBUPSPACE environment variable.

D. An UPDATE STATISTICS LOW command will ignore tables and indexes with modifications

less than STATCHANGE.

Answer: B

QUESTION NO:22

What two onconfig parameters will help improve performance of new network connections?

(Choose two.)

A. NETTYPE

B. VPCLASS

C. NS_CACHE

D. FET_BUF_SIZE

E. NUMFDSERVERS

Answer: C,E

QUESTION NO:20

Which two corrective actions may be taken if following message is logged in the online message

log during a failed attempt to bring an instance online? (Choose two)

18:15:44 Size of resident virtual segments 100000KB 60000KB > 150000KB

18:15:44 total allowed by configuration parameter SHMTOTAL

A. Decrease SHMADD

B. Increase SHMTOTAL

C. Decrease SHMBASE

D. Increase SHMVIRTSIZE

E. Decrease buffer pool size

Answer: B,E

7

QUESTION NO:24

What ONCONFIG parameter can be tuned to increase memory for hash joins?

A. RESIDENT

B. EXTSHMADD

C. VP_MEMORY_CACHE_KB

D. DS_NONPDQ_QUERY_MEM

Answer: D

QUESTION NO:1

Which sysmaster table can be queried to find the logging status of a database?

A. sysdb

B. sysdblog

C. sysdatabases

D. sysdblogstatus

Answer: C

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