Free Oracle 1Z0-908 Exam Questions

Become Oracle Certified with updated 1Z0-908 exam questions and correct answers

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Total 392 Questions | Updated On: Apr 20, 2026

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Question 1

You have an InnoDB Cluster configured with three servers.

Examine this command, which executes successfully:

mysqldump -uroot -p -d mydatabase > mydatabase_backup.sql

Due to data loss, the cluster is initialized and a restore is attempted resulting in this error:

ERROR 13176 (HY000) at line 23: Cannot update GTID_PURGED with the Group Replication plugin running

Which two actions, either one of which, can fix this error and allow a successful restore of the cluster? (Choose two.)

A : Stop all instances except the primary read/write master instance and run the restore.

B : Remove the @@GLOBAL.gtid_purged statement from the dump file.

C : Create the backup by using the --set-gtid-purged=OFF option.

D : Remove the group replication plugin from each instance before restoring.

E : Remove the @@GLOBAL.gtid_executed statement from the dump file.

F : Restore using the --set-gtid-purged=OFF option.

Answer: B,C

Question 2

You are using the Performance Schema to investigate replication on a slave which has a single master.

The option slave-parallel-type is set to DATABASE.

Assume that all instruments and consumers are enabled and all threads are instrumented.

Which two facts can be concluded from the given output? (Choose two.)

A : The salve has two intermediate relay slaves connected to it.

B : The slave is configured with slave_parallel_workers= 4.

C : At most, two schemas are being updates concurrently.

D : THREAD_ID 21 has stopped running.

E : The slave cannot process the relay log fast enough to use all threads.

F : The server needs more cores to use all slave threads.

Answer: A,B

Question 3

You adjust a default configuration to the following /etc/my.cnf on a Linux installation:

[mysqld]

Loq-bin

Binrylog_format=ROW

You do not notice the spelling error in binrylog_format and restart your production server.

How does the MySQL server behave with incorrectly spelled options?

A : Mysqld uses internal configuration versioning and reverts to the previous configuration.

B : When using mysql_config_editor for configuration adjustments, it detects incorrect syntax and typing mistakes.

C : The mysqld_safe script skips the unknown variable and starts using the remaining configuration changes.

D : Mysqld prints to the error log about an unknown variable, and then exits.

Answer: D

Question 4

How can we start MySQL when it was installed using RPM in Oracle Enterprise Linux 7?

A : mysqld_safe --user=mysql &

B : systemctl start mysqld

C : service start mysql

D : mysqladmin -u root start

Answer: B

Question 5

You have a MySQL replication setup and you intentionally stop the SQL thread on the slave.

mysql> SHOW SLAVE STATUS\G

... Slave_IO_Running: YesSlave_SQL_Running: No

What are two reasons that you may stop the SQL thread on the slave while keeping the I/O thread running? (Choose two.)

A : to allow the remaining events to be processed on the slave while not receiving new events from the master

B : to allow a backup to be created under reduced load

C : to allow for point-in-time recovery on the slave

D : to prevent schema changes from propagating to the slave before they are validated

E : to prevent any transaction experiencing a deadlock

Answer: B,C

Page: 1 / 79

Total 392 Questions | Updated On: Apr 20, 2026

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