1z0-062

1z0-062 practice questions, page 4 of 16, with answer review and explanations.

Question 16

Examine the structure of the sales table, which is stored in a locally managed tablespace with Automatic Segment Space Management (ASSM) enabled. You want to perform online segment shrink to reclaim fragmented free space below the high water mark. What should you ensure before the start of the operation?

  1. Row movement is enabled.
  2. Referential integrity constraints for the table are disabled.
  3. No queries are running on this table.
  4. Extra disk space equivalent to the size of the segment is available in the tablespace.
  5. No pending transaction exists on the table.

Question 17

Which task would you recommend before using the Database Upgrade Assistant (DBUA) to upgrade a single-instance Oracle 11g R2 database to Oracle Database 12c?

  1. shutting down the database instance that is being upgraded
  2. executing the catctl.pl script to run the upgrade processes in parallel
  3. running the Pre-Upgrade Information Tool
  4. copying the listener.ora file to the new ORACLE_HOME

Question 18

Your database is open and the listener LISTENER is up. You issue the command: LSNRCTL> RELOAD - What is the effect of reload on sessions that were originally established by listener?

  1. Only sessions based on static listener registrations are disconnected.
  2. Existing connections are not disconnected; however, they cannot perform any operations until the listener completes the re-registration of the database instance and service handlers.
  3. The sessions are not affected and continue to function normally.
  4. All the sessions are terminated and active transactions are rolled back.

Question 19

Which statement is true regarding the startup of a database instance?

  1. The instance does not start up normally and requires manual media recovery after a shutdown using the abort option.
  2. Uncommitted transactions are rolled back during the startup of the database instance after a shutdown using the immediate option.
  3. There is no difference in the underlying mechanics of the startup whether the database is shut down by using the immediate option or the abort option.
  4. Media recovery is required when the database is shut down by using either the immediate option or the abort option.
  5. Instance recovery is not required if the database instance was shut down by using SHUTDOWN IMMEDIATE.

Question 20

Examine the memory-related parameters set in the SPFILE of an Oracle database: Which statement is true?

  1. Only SGA components are sized automatically.
  2. Memory is dynamically re-allocated between the SGA and PGA as needed.
  3. The size of the PGA cannot grow automatically beyond 500 MB.
  4. The value of the MEMORY_TARGET parameter cannot be changed dynamically.