Question 11
Which statement is true about tablespaces?
Question 12
Which two statements can be used to adjust the sort_buffer_size variable on a running MySQL server?
(Choose two.)
(Choose two.)
Question 13
You inherited a busy InnoDB OLTP Instance with 100 schemas and 100 active users per schema.
* Total dataset size is 200G with an average schema size of 2G.
* The data is transient and is not backed up and can be repopulated easily.
* Performance and responsiveness of the DB is paramount.
* The query pattern for the DB instance is split 90/10 read/write.
* DB host is dedicated server with 256G RAM and 64 cores.
One of your colleagues made some recent changes to the system and users are now complaining of performance impacts.
Which four configuration file edits might your colleague have performed to cause the negative DB performance? (Choose four.)
* Total dataset size is 200G with an average schema size of 2G.
* The data is transient and is not backed up and can be repopulated easily.
* Performance and responsiveness of the DB is paramount.
* The query pattern for the DB instance is split 90/10 read/write.
* DB host is dedicated server with 256G RAM and 64 cores.
One of your colleagues made some recent changes to the system and users are now complaining of performance impacts.
Which four configuration file edits might your colleague have performed to cause the negative DB performance? (Choose four.)
Question 14
You are using the Performance Schema to investigate replication on a slave which has a single master. The option slave-parallel-type is 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.)
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.)
Question 15
The 'applicationdb' is using InnoDB and consuming a large amount of file system space. You have a /backup partition available on NFS where backups are stored.
You investigate and gather this information:
* The table data_current has 1,000,000 rows.
* The table data_reports has 1,500,000 rows.
* The table data_archive has 4,500,000 rows.
Three tables are stored in the InnoDB shared tablespace and the details are as follows:
You attempt to free space from ibdata1 by taking a mysqldump of the data_archive table and storing it on your backup partition.
Unfortunately, this action does not free any actual disk space back to the file system and the server disk space is running out.
Which set of actions will allow you to free disk space back to the file system?
You investigate and gather this information:
* The table data_current has 1,000,000 rows.
* The table data_reports has 1,500,000 rows.
* The table data_archive has 4,500,000 rows.
Three tables are stored in the InnoDB shared tablespace and the details are as follows:
You attempt to free space from ibdata1 by taking a mysqldump of the data_archive table and storing it on your backup partition.
Unfortunately, this action does not free any actual disk space back to the file system and the server disk space is running out.
Which set of actions will allow you to free disk space back to the file system?