[Dec 16, 2021] 1z1-908 Exam Dumps PDF Guaranteed Success with Accurate & Updated Questions
Pass 1z1-908 Exam - Real Test Engine PDF with 86 Questions
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:
Certifications:
Oracle Database 11g Certified Professional
Oracle Database Administration 2019 Certified Professional
Oracle Database 10g Real Applications Clusters Certified Expert
Oracle Certified Expert, Oracle Real Application Clusters 11g and Grid Infrastructure Administrator
Oracle Database 12c Certified Professional
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.
Average Salary for Oracle 1Z0-908: MySQL 8.0 Database Exam Certified Professional
Oracle Database administrator roles are in great demand nowadays. The average salaries of Oracle 1Z0-908 Exam Certified professional in:
- India - 69,96,000 16,42,330 INR
- Europe - 80,000 Euro
- England - 71,000 POUND
- United State - 94,000 USD
NEW QUESTION 49
Which three actions are effective in capacity planning? (Choose three.)
- A. buying more CPU
- B. monitoring OS resources for patterns
- C. adding circular replication nodes for increased DML capability
- D. consulting the application team about any future projects and use
- E. basing expected growth on an average of the last 3 years
- F. buying more RAM
- G. upgrading to the latest application version
- H. buying more disk
Answer: B,D,E
NEW QUESTION 50
You must run multiple instances of MySQL Server on a single host.
Which three methods are supported? (Choose three.)
- A. Run mysqld with --datadir defined for each instance.
- B. Use systemd with different settings for each instance.
- C. Use resource groups to lock different instances on separate CPUs.
- D. Start mysqld or mysqld_safe using different option files for each instance.
- E. Use system tools to lock each instance to its own CPU.
- F. Run MySQL Server docker containers.
Answer: A,B,D
NEW QUESTION 51
Examine these statements and output:
Which statement is true?
- A. The user is authorized as the rsmith@localhost user.
- B. The user failed to define a username and the connecting username defaulted to ''@'%'.
- C. The user is authenticated as the anonymous proxy user ''@'%'.
- D. The user is authorized as the accounting@localhost user.
- E. The user is logged in with --user=accounting as an option.
Answer: A
NEW QUESTION 52
Examine the modified output:
Seconds_Behind_ Mastervalue 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
Explanation:
Explanation
NEW QUESTION 53
Which two are contained in the InnoDB system tablespace (ibdata1) by default? (Chose two.)
- A. table data
- B. primary indexes
- C. user privileges
- D. change buffer
- E. doublewrite buffer
- F. InnoDB Data Dictionary
Answer: E,F
NEW QUESTION 54
Which three settings control global buffers shared by all threads on a MySQL server? (Choose three.)
- A. innodb_buffer_pool_size
- B. key_buffer_size
- C. read_buffer_size
- D. tmp_table_size
- E. sort_buffer_size
- F. table_open_cache
Answer: B,D,E
NEW QUESTION 55
Examine these statements, which execute successfully:
TRUNCATE test; BEGIN;
INSERT INTO test(id, name) VALUES(1, "Hello"); ROLLBACK;
SELECT id FROM test;
Which three storage engines would return a nonempty recordset for the test table when executing the statements? (Choose three.)
- A. NDB
- B. InnopB
- C. ARCHIVE
- D. MEMORY
- E. BLACKHOLE
- F. MyISAM
Answer: A,E,F
NEW QUESTION 56
You reconfigure and start a slave that was not replicating for several days.
The configuration file and CHANGE MASTER command 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 the master does not have the required transaction with bbbbbbbb-bbbb- bbbb-bbbb-bbbbbbbbbbbb GTIDs in its binary logs.
- C. Replication will fail because of inconsistent numbers in cccccccc-cccc-cccc-cccc-cccccccccccc GTIDs.
- D. Replication will work.
- E. Replication will fail because the master has already purged transactions with cccccccc-cccc-cccc- cccc-cccccccccccc GTIDs.
Answer: A
NEW QUESTION 57
Which statement is true about InnoDB persistent index statistics?
- A. Setting innodb_stats_auto_recalc=ON causes statistics to be updated automatically when a new index is created.
- B. Updating index statistics is an I/O expensive operation.
- C. Execution plans based on transient index statistics improve precision when innodb_stats_persistent_sample_pages is increased.
- D. Tables are scanned and index statistics recalculated when an instance is restarted.
- E. Index statistics are calculated from pages buffered in the buffer pool for tables with InnoDB storage engine.
- F. Increasing innodb_stats_persistent_sample_pages determines higher pages scanning speed, at the cost of increased memory usage.
Answer: C
NEW QUESTION 58
Which two statements are true about InnoDB data-at-rest encryption? (Choose two.)
- A. It decrypts data for use in memory.
- B. It supports only non-blob datatypes.
- C. It supports all indexes transparently.
- D. It enforces encryption from disk to memory and over network transmission.
- E. It does not support the transportable tablespaces feature.
Answer: A,C
Explanation:
Explanation/Reference: https://docs.oracle.com/cd/E17952_01/mysql-8.0-en/faqs-tablespace-encryption.html
NEW QUESTION 59
Which four connection methods can MySQL clients specify with the --protocol option when connecting to a MySQL server? (Choose four.)
- A. DIRECT
- B. IPv6
- C. TCP
- D. MEMORY
- E. FILE
- F. IPv4
- G. PIPE
- H. SOCKET
Answer: C,D,G,H
NEW QUESTION 60
Examine this statement, which executes successfully:
You want to improve the performance of this query:
Which change enables the query to succeed while accessing fewer rows?
- A. ALTER TABLE world.city ADD SPATIAL INDEX (Name);
- B. ALTER TABLE world.city ADD INDEX (Name);
- C. ALTER TABLE world.city ADD INDEX (Population);
- D. ALTER TABLE world.city ADD FULLTEXT INDEX (Name);
- E. ALTER TABLE world.city ADD FULLTEXT INDEX (Population);
- F. ALTER TABLE world.city ADD SPATIAL INDEX (Population);
Answer: F
NEW QUESTION 61
Examine this list of MySQL data directory binary logs:
binlog.000001 binlog.000002
.....
binlog.000289
binlog.000300
binlog.000301
binlog.index
Now examine this command, which executes successfully:
mysqldump --delete-master-logs --all-databases > /backup/db_backup.sql
Which two are true? (Choose two.)
- A. All databases are backed up to the output file.
- B. All databases, excluding master metadata, are backed up to the output file.
- C. All binary logs are deleted from the master.
- D. All details regarding deleted logs and master metadata are captured in the output file.
- E. All non-active binary logs are removed from the master.
- F. All binary logs are backed up and then deleted.
Answer: B,C
NEW QUESTION 62
The data in this instance is transient; no backup or replication will be required. It is currently under performing.
The database size is static and including indexes is 19G.
Total system memory is 32G.
After profiling the system, you highlight these MySQL status and global variables:
The OS metrics indicate that disk is a bottleneck. Other variables retain their default values.
Which three changes will provide the most benefit to the instance? (Choose three.)
- A. innodb_undo_directory=/dev/shm
- B. sync_binlog=0
- C. buffer_pool_size=24G
- D. max_connections=10000
- E. innodb_flush_log_at_trx_commit=1
- F. innodb_log_file_size=1G
- G. innodb_doublewrite=0
Answer: D,E,F
NEW QUESTION 63
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 64
t is a non-empty InnoDB table.
Examine these statements, which are executed in one session:
BEGIN;
SELECT * FROM t FOR UPDATE;
Which is true?
- A. If OPTIMIZE TABLE; is invoked, it will create a table lock on t and force a transaction rollback.
- B. mysqlcheck --analyze --all-databases will execute normally on all tables and return a report.
- C. If ANALYZE TABLE; is invoked from the same session, it hangs until the transaction is committed or rolled back.
- D. If OPTIMIZE LOCAL TABLE t; is invoked from another session, it executes normally and returns the status.
Answer: D
NEW QUESTION 65
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 66
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 67
......
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