Oracle 1z1-497 Actual Free Exam Questions & Community Discussion

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?

View the current parameter settings shown in the output below.
NAMETYPEVALUE db_file_multiblock_read_count integer 107 ddl_lock_timeout integer 60 Distributed_lock_timeout integer 60 dml_locks integer 748 lock_sga boolean FALSE enab1e_dd1_1ogging boolean FALSE resumable_timeout integer 0
A user logs in to the hrschema and issues the following commands: SQL> CREATE TABLE emp
(empno NUMBER(3),
enamo VARCHAR2(20),
sal NUMBER (8, 2));
SQL> INSERT INTO emp (empno, ename) VALUES(1, 'JAMES');
At this moment, a second user also logs in to the hrschema and issues the following command:
SQL> ALTER TABLE emp MODIFY salNUMBER(10, 2);
What happens in this scenario?

You are about to install Oracle Database 12c Enterprise Edition. Which statement is true?

Which two statements are true about transactions in Oracle Database 12c?

Which is the default isolation level in Oracle Database 12c?

Which process is responsible for writing the contents of database buffers to data files?

Which two items are key for maintaining data consistency in Oracle Database 12c?

Which three operations can the PUBLIC user with the SYSOPER privilege perform?