Pass Your MySQL Database Administration 1Z0-908 Exam on Jan 08, 2022 with 86 Questions
1Z0-908 Free Exam Study Guide! (Updated 86 Questions)
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Oracle 1Z0-908: MySQL 8.0 Database Administration
NEW QUESTION 23
Which two statements are true about MySQL server multi-source replication? (Choose two.)
- A. It relies on relay_log_recovery for resilient operations.
- B. It needs to be re-instanced after a crash to maintain consistency.
- C. It does not attempt to detect or resolve replication conflicts.
- D. It is not compatible with auto-positioning.
- E. It uses only time-based replication conflict resolution.
- F. It must use GTID replication.
Answer: E,F
NEW QUESTION 24
Which two MySQL Shell commands are excluded from the InnoDB Cluster creation procedure? (Choose two.)
- A. dba.configureInstance()
- B. dba.createCluster()
- C. dba.checkInstanceConfiguration()
- D. cluster.addInstance()
- E. dba.configureLocalInstance()
- F. cluster.setPrimaryInstance()
- G. cluster.forceQuorumUsingPartitionOf()
Answer: F,G
NEW QUESTION 25
Which two MySQL Shell commands are excluded from the InnoDB Cluster creation procedure? (Choose two.)
- A. dba.configureInstance()
- B. dba.createCluster()
- C. dba.checkInstanceConfiguration()
- D. cluster.addInstance()
- E. dba.configureLocalInstance()
- F. cluster.setPrimaryInstance()
- G. cluster.forceQuorumUsingPartitionOf()
Answer: F,G
Explanation:
Explanation/Reference: https://docs.oracle.com/cd/E17952_01/mysql-shell-8.0-relnotes-en/news-8-0-16.html
NEW QUESTION 26
You have just installed MySQL on Oracle Linux and adjusted your /etc/my.cnf parameters to suit your installation.
Examine the output:
What statement is true about the start attempt?
- A. systemd attempted to start mysqld, found another systemd mysqld process running, and shut it down.
- B. MySQL server continued to start up even though another process existed.
- C. systemd waited for 30 seconds before timing out and start up failed.
- D. MySQL server was not started due to a problem while executing process 2732.
- E. systemd found the mysqld service disabled and failed to start it.
Answer: A
NEW QUESTION 27
You want to check the values of the sort_buffer_size session variables of all existing connections.
Which performance_schema table can you query?
- A. global_variables
- B. variables_by_thread
- C. session_variables
- D. user_variables_by_thread
Answer: C
NEW QUESTION 28
You reconfigure and start a slave that was not replicating for several days.
The configuration file and CHANGE MASTERcommand are correct.
Examine the GTID information from both master and slave:
Which statement is true?
- A. Replication will fail because the slave has purged more aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa transactions than the master.
- B. Replication will fail because of inconsistent numbers in cccccccc-cccc-cccc-cccc-cccccccccccc GTIDs.
- C. Replication will fail because the master has already purged transactions with cccccccc-cccc-cccc- cccc-ccccccccccccGTIDs.
- D. Replication will fail because the master does not have the required transaction with bbbbbbbb-bbbb- bbbb-bbbb-bbbbbbbbbbbbGTIDs in its binary logs.
- E. Replication will work.
Answer: A
Explanation:
Explanation/Reference: https://bugs.mysql.com/bug.php?id=86643
NEW QUESTION 29
Your MySQL installation is running low on space due to binary logs. You need to reduce your log space usage urgently.
Which two sets of actions when completed will accomplish this? (Choose two.)
- A. Set binlog_expire_logs_seconds in my.cnf.
- B. Use SET GLOBAL binlog_expire_logs_seconds=<value> and run the FLUSH BINARY LOGS command.
- C. Use SET GLOBAL binlog_expire_logs_seconds=<value> and restart the server.
- D. Use PURGE BINARY LOGS to <binlog_name>.
- E. Set binlog_expire_logs_seconds = 0 in my.cnf and restart the server.
- F. Use SET PERSIST binlog_expire_logs_seconds=<value>.
Answer: C,F
NEW QUESTION 30
Examine this command and output:
Which two statements are true? (Choose two.)
- A. The lock is at the table object level.
- B. The lock is a row-level lock.
- C. The lock is a shared lock.
- D. The lock is at the metadata object level.
- E. The lock is an exclusive lock.
- F. The lock is an intentional lock.
Answer: A,E
NEW QUESTION 31
Binary log events for the ‘mydb1’ schema must be copied to a different schema name ‘mydb2’.
Which command will do this?
- A. mysqlbinlog --rewrite-db=’mydb1->mydb2’ | mysql
- B. mysqlbinlog --read-from-remote-server --raw | sed ‘s/mydb1/mydb2/g’ | mysql
- C. mysqlbinlog --rewrite-db=’mydb1’ --rewrite-db=’mydb2’ | mysql
- D. mysqlbinlog --datebase=mydb1 --database=mydb2 | mysql
Answer: B
NEW QUESTION 32
There are five MySQL instances configured with a working group replication.
Examine the output of the group members:
Which two statements are true about network partitioning in the cluster? (Choose two.)
- A. The group replication will buffer the transactions on the online nodes until the unreachable nodes return online.
- B. The cluster has built-in high availability and updates group_replication_ip_whitelist to remove the unreachable nodes.
- C. A manual intervention to force group members to be only the working two instances is required.
- D. The cluster will shut down to preserve data consistency.
- E. There could be both a 2 node and 3 node group replication still running, so shutting down group replication and diagnosing the issue is recommended.
Answer: B,D
NEW QUESTION 33
Examine these commands and output:
Which connection ID is holding the metadata lock?
- A. 0
- B. 1
- C. 2
- D. 3
- E. 4
- F. 5
Answer: D
NEW QUESTION 34
Which step or set of steps can be used to rotate the error log?
- A. Execute SET GLOBAL log_error = ‘<new error log file>’.
- B. Execute SET GLOBAL expire_logs_days=0to enforce a log rotation.
- C. Execute SET GLOBAL max_error_count = <number of messages at point to rotate>.
- D. Rename the error log file on disk, and then execute FLUSH ERROR LOGS.
Answer: D
Explanation:
Explanation/Reference: https://blog.pythian.com/mysql-log-rotation/
NEW QUESTION 35
Examine the modified output:
Seconds_Behind_ Master value is steadily growing. What are two possible causes? (Choose two.)
- A. This value shows only I/O latency and is not indicative of the size of the transaction queue.
- B. The master is producing a large volume of events in parallel but the slave is processing them serially.
- C. One or more large tables do not have primary keys.
- D. The parallel slave threads are experiencing lock contention.
- E. The master is most probably too busy to transmit data and the slave needs to wait for more data.
Answer: A,B
NEW QUESTION 36
Which four are types of information stored in the MySQL data dictionary? (Choose four.)
- A. performance metrics
- B. table definitions
- C. server configuration rollback
- D. InnoDB buffer pool LRU management data
- E. stored procedure definitions
- F. access control lists
- G. view definitions
- H. server runtime configuration
Answer: B,C,E,G
NEW QUESTION 37
You execute this command:
shell> mysqlpump --exclude-databases=% --users
Which statement is true?
- A. It creates a logical backup of all metadata, but contains no table data.
- B. It creates a logical backup of all MySQL user accounts.
- C. It returns an error because the mysqldumpcommand should have been used.
- D. It creates a logical backup of only the usersdatabase.
Answer: A
Explanation:
Explanation/Reference: https://docs.oracle.com/cd/E17952_01/mysql-5.7-en/mysqlpump.html
NEW QUESTION 38
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How to Prepare for Oracle 1Z0-908: MySQL 8.0 Database Exam
Preparation Guide for Oracle 1Z0-908: MySQL 8.0 Database Administrator Exam
Introduction
Oracle, based in California, is an American multinational Information Technology company. Oracle is an international company that develops software applications for business. To help enterprises develop their operations, Oracle provides a variety of cloud-based applications and systems as well as hardware and services. Data management, business analytics, IT operations management, enterprise resource planning, security, and emerging technologies are the focus of Oracle’s applications. Oracle is best known for its database software and technology. Oracle Database, a relational Database Management System (DBMS), is one of the most popular corporate database products.
Oracle also develops and builds tools and technologies for database management systems for middle-tier applications, Human Capital Management systems (HCM), Customer Relationship Management systems (CRM), Enterprise Resource Planning systems (ERP), and Supply Chain Management systems (SCM). Oracle Database commonly known as Oracle Database Management System (DBMS) is a multi-model database management system. It is a widely used database to run tasks for Data warehousing and Online Transaction processing databases. Different service providers make Oracle Database accessible on cloud, premises, or a hybrid cloud installation.
This exam guide gives a brief introduction to the topics of 1Z0-908 practice exams and 1Z0-908 dumps.
Oracle 1Z0-908: MySQL 8.0 Database Administrator Certification Path
The Oracle Certified Expert, Oracle 1Z0-908: MySQL 8.0 Database Administrator certification is for Database Development Systems Managers and Database Administrators with at least 1 year of RAC and Grid Infrastructure experience. It is also recommended to understand high availability concepts and clustering. To earn this certificate, you should have the ability to install, manage, monitor, and recover RAC databases, Clusterware, and ASM environments. You will get a complete understanding of the architecture of the Clusterware, ASM, and RAC databases while preparing for the exam with the help of 1Z0-908 practice test. After earning this certification, you will gain the skills of installing, setup, backup and recovery, tuning, and monitoring of these components.
The candidates should have to complete one of the following Certification or Training:
Oracle Database 11g Certified Professional
Oracle Database 12c Certified Professional
Oracle Certified Expert, Oracle Real Application Clusters 11g and Grid Infrastructure Administrator
Certifications:
Oracle Database Administration 2019 Certified Professional
Oracle Database 10g Real Applications Clusters Certified Expert
1Z0-908 practice exams are great sources for the preparation of the exam but they do not meet the requirement of the training. To meet the requirement of the training course must be offered by Oracle University Training Center, Oracle Authorized Education Center, Oracle Authorized Partner, or Oracle Workforce Development Program. Courses can be a live virtual class, training on demand, learning subscription, or instructor-led in-class.
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