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Oracle Database 12c R2 1z1-072 .
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1z1-072 PDF DEMO:
QUESTION NO: 1
Which is true about unexpired undo?
A. It is always retained for the time specified in UNDO__RETENTION.
B. It is required when a transaction rolls back.
C. It consists of undo only for uncommitted transactions.
D. It may be used to support flashback queries.
E. It is the first type of undo overwritten when trying to avoid out-of-space errors.
Answer: A
QUESTION NO: 2
Which two are segment types? (Choose two.)
A. sequence
B. stored procedure
C. view
D. materialized views on a prebuilt container
E. table
F. table partition
Answer: E,F
QUESTION NO: 3
Which three are true about Automatic Workload Repository (AWR), Automatic Database
Diagnostic Monitor (ADDM), and the MMON background process? (Choose three.)
A. ADDM performs its analysis only whenever a DBA requests it.
B. ADDM can recommend shrinking the buffer cache.
C. AWR snapshots must be deleted when no longer required by ADDM.
D. By default, AWR snapshots are automatically purged after eight days.
E. ADDM can recommend extending the buffer cache.
F. By default, MMON creates an AWR snapshot every 30 minutes.
Answer: A,B,D
QUESTION NO: 4
Start up the database instance.
Which are the minimum required steps in the correct order?
A. 1, 2, 7
B. 2, 1, 7
C. 1, 4, 3, 5, 7
D. 1, 7, 2
E. 6, 1, 7
Answer: A
6. You execute this command to connect to an instance from a client on a different machine:
CONNECT username/password@net_service_name
No name servers are configured.
Which two are true about net_service_name? (Choose two.)
A. It must be defined in the tnsnames.ora file on the client side.
B. It must have the same name as the SERVICE_NAME defined in it.
C. It must contain only one address protocol for one listener.
D. It must contain the address protocol for only one listener.
E. It must be defined in the tnsnames.ora file on the server side.
Answer: B,E
7. The ORCL database has DEFERRED_SEGMENT_CREATION set to TRUE.
UNDOTBS2 is the active undo tablespace.
Examine these commands:
USER1 executes DML, which generates more than 2 MB of UNDO.
What is the result and why?
A. It suspends the transaction, which can be resumed by increasing the size of UNDOTBS2.
B. It returns an error because UNDOTBS2 has RETENTION GUARANTEE.
C. It returns an error because UNDOTBS2 is fixed size.
D. It returns an error because UNDOTBS2 is fixed size and has RETENTION GUARANTEE.
E. It suspends the transaction, which can be resumed by setting UNDOTBS1 as the active undo tablespace.
F. It suspends the transaction, which can be resumed by increasing USER1's quota on UNDOTBS2.
Answer: C
QUESTION NO: 5
Modify the parameter in the spfile with scope = BOTH.
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Updated: May 28, 2022