Online Access Free Oracle.1Z0-888.v2022-02-17.q133 Practice Test (Page 5)

1Z0-888 Exam Question 16

Consider these global status variables:

Which two conclusions can be made from the output? (Choose two.)

A.The thread cache has been configured with thread_cache_sizeset to at least 6.

B.There are 140 Performance Schema threads at the time of the output.

C.All max_connectionswere in use at 2018-03-22 14:54:06

D.There are more connections being idle than executing queries.

E.There are 510 connections to MySQL at the time of the output.

1Z0-888 Exam Question 17

What does the possible_keys column in this output denote?

A.whether you are using any indexes in your query

B.whether there are any indexes on the tables that you are querying

C.if it is possible for you to include any indexes in your query

D.if there are any indexes that may be used to solve this query

1Z0-888 Exam Question 18

Which two methods will provide the total number of partitions on a table? (Choose two.)

A.Query the INFORMATION_SCHEMA.PARTITIONS table

B.Use the command: SHOW TABLE STATUS

C.Query the performance_schema.objects_summary_global_by_type table

D.Query the INFORMATION_SCHEMA.TABLES table for the partition_count

E.Use the command: SHOW CREATE TABLE

1Z0-888 Exam Question 19

These details are shown when logged in to an account:

Which set of statements would match the accounts shown?
mysql> CREATE USER 'employee'@'localhost' IDENTIFIED BY 'more_secrets';

A.mysql> CREATE USER ''@'' IDENTIFIED BY 'valid_password' WITH PROXY
'employee'@'localhost';
mysql> CREATE USER 'employee'@'localhost' IDENTIFIED BY 'more_secrets';

B.mysql> GRANT PROXY ON 'employee'@'localhost' TO 'robert'@'localhost';
mysql> CREATE USER 'robert'@'localhost' IDENTIFIED BY 'secret_password';

C.mysql>CREATE USER 'employee'@'localhost' IDENTIFIED BY 'more_secrets';
mysql> CREATE_USER ''@'' IDENTIFIED WITH authentication_pam ACCOUNT LOCK;

D.mysql> CREATE USER 'employee'@'localhost' IDENTIFIED BY 'more_secrets'; mysql> GRANT PROXY ON 'employee'@'localhost' TO ''@'';

1Z0-888 Exam Question 20

The MySQL error log shows:
InnoDB: Warning: a long semaphore wait:
The relevant parts of the InnoDB monitor output shows:

Which two options would help avoid the long wait in the future? (Choose two.)

A.Change the table to use HASH indexes instead of BTREE indexes.

B.Increase the value of the innodb_lock_wait_timeoutoption.

C.Increase the value of the innodb_read_io_threadsoption.

D.Set the value of innodb_adaptive_hash_indexto zero.

E.Increase the size of the InnoDB buffer pool.

F.Deactivate the query cache.

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