Online Access Free Oracle.1Z0-888.v2021-09-25.q123 Practice Test (Page 18)

1Z0-888 Exam Question 81

Consider the CHECK TABLEcommand.
In which two situations should this command be used? (Choose two.)

A.to find out why a query takes a long time to execute on a given table

B.to make sure a table has no structural problems

C.to improve performance by updating index distributing statistics on InnoDB tables

D.to repair table structure problem

E.to make sure that no table indexes are corrupted

1Z0-888 Exam Question 82

Consider:

Which statement best describes the meaning of the value for the key_lencolumn?

A.It shows how many columns in the index are examined.

B.It shows how many bytes will be used from each index row.

C.It shows the number of characters indexed in the key.

D.It shows the total size of the index row.

1Z0-888 Exam Question 83

A MySQL replication slave is set up as follows:
Uses all InnoDB tables

Receives ROW-based binary logs

Has the read-only option

The replication slave has been found in an error state.
You check the MySQL error log file and find these entries:

What are two possible causes for this error to occur? (Choose two.)

A.The slave user does not have INSERT, UPDATE, or DELETEpermission and cannot execute the Write_rowsfunction.

B.The root user on the slave has executed FLUSH LOGS, causing the relay-log to doublewrite.

C.For tables with UNIQUE keys, statement-based replication must be used to maintain integrity.

D.The applications have the SUPERprivilege, which allows them to update rows.

E.The slave was created with mysqldump -u root -p --skip-lock-tables -all-databases
> /data/data.sql

1Z0-888 Exam Question 84

You are using the Performance Schema to investigate replication on a slave which has a single master.
The option slave-parallel-typeis 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.THREAD_ID 21has stopped running.

B.The salve has two intermediate relay slaves connected to it.

C.The server needs more cores to use all slave threads.

D.The slave is configured with slave_parallel_workers= 4

E.At most, two schemas are being updates concurrently.

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

1Z0-888 Exam Question 85

You need to dump the data from the master server and import it into a new slave server.
Which mysqldump option can be used when dumping data from the master server in order to include the master server's binary log information?

A.include-log-file

B.include-master-info

C.master-data

D.master-binlog

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1Z0-888 Exam Question 81

1Z0-888 Exam Question 82

1Z0-888 Exam Question 83

1Z0-888 Exam Question 84

1Z0-888 Exam Question 85

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