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: Mar 11, 2026

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Question 1

Your MySQL server was upgraded from an earlier major version.

The sales database contains three tables, one of which is the transactions table, which has 4 million rows.

You are running low on disk space on the datadir partition and begin to investigate.

Examine these commands and output:

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Which two statements are true? (Choose two.)

A : Executing SET GLOBAL innodb_row_format=COMPRESSED and then ALTER TABLE transactionswill free up disk space.

B : Executing ALTER TABLE transactions will enable you to free up disk space.

C : Truncating the sales and leads table will free up disk space.

D : Truncating the transactions table will free up the most disk space.

E : The transactions table was created with innodb_file_per_table=OFF.

Answer: A

Question 2

You need to replicate a table from a master to a slave. The master and slave copies of the table will have different number of columns.

Which two conditions must be true? (Choose two.)

A : Each extra column in the copy with more columns must not have a default value.

B : Columns that are common to both versions of the table must be defined in the same order on the master and the slave.

C : The slave database cannot have more columns than the master. Only the master database can have more columns.

D : Columns that are common to both versions of the table must come first in the table definition, before any additional columns are additional columns are defined on either server.

E : The master database cannot have more columns than the slave. Only the slave deatbase can have more columns.

Answer: B,D

Question 3

User bob@% has the following roles granted: app_read and app_write.

How would you show the privileges for bob@% when it uses app_write? (Choose one).

A : SHOW GRANTS FOR bob@'%';

B : SHOW GRANTS FOR bob@'%' USING 'app_write';

Answer: B

Question 4

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 5

On examination, your MySQL installation datadir has become recursively world read/write/executable.

What are two major concerns of running an installation with incorrect file privileges? (Choose two.)

A : Users could overwrite configuration files.

B : Data files could be deleted.

C : SQL injections could be used to insert bad data into the database.

D : MySQL binaries could be damaged, deleted, or altered.

E : Extra startup time would be required for the MySQL server to reset the privileges.

Answer: A,B

Page: 1 / 79

Total 392 Questions | Updated On: Mar 11, 2026

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