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Oracle Updated 1z0-497 Exam Questions and Answers by kiyaan

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Oracle 1z0-497 Exam Overview :

Exam Name: Oracle Database 12c Essentials
Exam Code: 1z0-497 Dumps
Vendor: Oracle Certification: Oracle Database 12c Certified Implementation Specialist
Questions: 150 Q&A's Shared By: kiyaan
Question 12

Which three events signal a database writer (DWR) to write buffers to disk?

Options:

A.

The database advances a checkpoint.

B.

A client process commits a transaction.

C.

The redo log buffer becomes full.

D.

A server process cannot find non-dirty blocks after scanning a threshold number of buffers.

E.

A tablespace is changed to read-only status.

F.

The database is shut down in immediate mode.

Discussion
Question 13

You execute some DMLcommands, followed by a COMMIT Statement.

Which option correctly describes how the logwriter (LGWR) process takes part in the transaction commit?

Options:

A.

1. LGWR writes the commit record to disk.

2. LGWR writes all redo entries from Redo Log Buffer to disk.

B.

1. GWR writes only the transaction's redo entries from Redo Log Buffer to disk.

2. LGWR writes the commit record to disk.

C.

1. LGWR puts the commit record to Redo Log Buffer.

2. IGWR writes all redo entries from Redo Log Buffer to disk.

D.

1. LGWR puts the commit record to Redo Log Buffer.

2. If the activity is high, LGWR waits three seconds for other transactions to commit.

3. LGWR writes all redo log entries from Redo Log Buffer to disk.

E.

1. LGWR puts the commit record to Redo Log Buffer.

2. LGWR signals the database writer (DBW) process to write dirty blocks to disk.

3. LGWR writes all redo entries from Redo Log Buffer to disk.

Discussion
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Elis Mar 14, 2026
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Stefan
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Ocean Mar 18, 2026
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Question 14

Which three DBA operations can be performed by using Oracle SQL Developer?

Options:

A.

database backup and recovery using RMAN

B.

performance tuning operations such as generation of AWR, ADDM, and ASH reports

C.

storage configuration for archive logs and control files

D.

storage configuration for data files and redo log groups

E.

database status view and Data Pump export and import jobs

Discussion
Question 15

You have two database servers EMP and EXP. A user of the database from the EXP server wants to extract some information from the database in the EMP server for cross-verification. Which schema object enables the user to access the information from the remote database?

Options:

A.

cluster

B.

database link

C.

mapping table

D.

materialized view

Discussion
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