D the cpuwaittime column indicates the total time

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D. The CPU_WAIT_TIME column indicates the total time that sessions in the consumer group waited for the CPU due to I/O waits and latch or enqueue contention. E. A user belonging to the DSS__QUERIES resource consumer group can create a new session but the session will be queued. Correct Answer: CE Section: (none) Explanation Explanation/Reference: Explanation: QUESTION 15 Which action takes place when a file checkpoint occurs? A. The checkpoint position is advanced in the checkpoint queue. B. All buffers for a checkpointed file that were modified before a specific SCN are written to disk by DBWn and the SCN is stored in the control file. C. The Database Writer process (DBWn) writes all dirty buffers in the buffer cache to data files. D. The Log Writer process (LGWR) writes all redo entries in the log buffer to online redo log files. Correct Answer: C Section: (none) Explanation Explanation/Reference: Explanation: 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? A. Row movement is enabled. B. Referential integrity constraints for the table are disabled. C. No queries are running on this table. D. Extra disk space equivalent to the size of the segment is available in the tablespace. E. No pending transaction exists on the table. Correct Answer: A Section: (none) Explanation Explanation/Reference:
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Explanation: 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? A. shutting down the database instance that is being upgraded B. executing the catctl.pl script to run the upgrade processes in parallel C. running the Pre-Upgrade Information Tool D. copying the listener.ora file to the new ORACLE_HOME Correct Answer: C Section: (none) Explanation Explanation/Reference: References: 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? A. Only sessions based on static listener registrations are disconnected. B. 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. C. The sessions are not affected and continue to function normally. D. All the sessions are terminated and active transactions are rolled back. Correct Answer: C Section: (none) Explanation Explanation/Reference: Explanation: QUESTION 19 Which statement is true regarding the startup of a database instance?
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  • Fall '19
  • Oracle Database

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