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Oracle database 10g:Administration I Sample Questions:

1. Which two operations require undo data? (Choose two.)

A) committing a transaction
B) rolling back a transaction
C) recovering from failed transactions
D) rolling forward during instance recovery
E) recording a transaction to redo log files

2. The HR user owns the EMP table. The HR user grants privileges to the SCOTT user by
using this command:
SQL> GRANT SELECT,INSERT,UPDATE ON emp TO scott WITH GRANT OPTION;
The SCOTT user executes this command to grant privileges to the JIM user:
SQL> GRANT SELECT,INSERT,UPDATE ON hr.emp TO jim;
Now the HR user decides to revoke privileges from JIM by using this command:
SQL> REVOKE SELECT,INSERT,UPDATE ON emp FROM jim;
Which statement is true after HR issues the REVOKE command?

A) The command fails because HR cannot revoke the privileges from JIM.
B) The command fails because SCOTT still has privileges with him.
C) The command succeeds and privileges are revoked from JIM.
D) Only HR can perform SELECT, INSERT, and UPDATE operations on the EMP table.

3. You want to monitor and control the resource usage by sessions. You want to be warned automatically when more than 100 sessions are opened with your database. What action would you take to achieve this?

A) Set the warning threshold for the Current Logons Count metric.
B) Set the limits in the profiles used by users.
C) Use the Database Resource Manager.
D) Modify the SESSIONS initialization parameter.

4. A user receives the following error while executing a query:
ORA-01555: snapshot too old
Which two options can be the solutions to avoid such errors in future? (Choose two.)

A) increase the size of redo log files
B) increase the size of the undo tablespace
C) enable the retention guarantee for the undo tablespace
D) increase the size of the default temporary tablespace
E) increase the size of the Database Buffer Cache

5. Which two statements about Flashback Query are true? (Choose two.)

A) It can be performed to recover ALTER TABLE statements
B) It helps in row-level recovery from user errors.
C) It is generated by using the redo log files.
D) It fails when undo data pertaining to the transaction is overwritten.
E) The database has to be opened with the resetlogs option after performing Flashback Query.

Solutions: