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1Z0-046
Oracle
Oracle Database 10g: Managing Oracle on Linux for DBA’s
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QUESTION: 1 View the Exhibit. Which two statements are true about the output of the cat /proc/partitions command? (Choose two.)
A. The hard disk has four partitions. B. The hard disk has six partitions. C. The swap partition is not shown in the output. D. The major column shows the device number with partitions. E. The #blocks column shows the number of inode blocks in that partition. Answer: Pending. Please email feedback to support@hotcerts.com QUESTION: 2 You find that oracleasm scandisks command is not discovering all your ASM disks. Which tool or utility can provide you details about what SCANDISKS is doing?
A. strace utility B. OS Watcher (OSW) C. System Activity Reporter (sar) D. Remote Diagnostics Agent (RDA) Answer: A QUESTION: 3 Which two statements are correct about the DB_WRITER_PROCESSES initialization parameter? (Choose two.) A. The default value for DB_WRITER_PROCESSES is (CPU_COUNT+7)/8. B. You set DB_WRITER_PROCESSES to greater than one to simulate asynchronous input/output (I/O). C. You cannot set DB_WRITER_PROCESSES to greater than one if asynchronous I/O is
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enabled for the Oracle server. D. You cannot set DB_WRITER_PROCESSES to greater than one if the DBWR_IO_SLAVES initialization parameter is set to greater than zero. E. You must set an appropriate value for the LOG_PARALLELISM initialization parameter before modifying the default value for DB_WRITER_PROCESSES.
Answer: A, D
QUESTION: 4 Which two statements are true regarding the Automatic Storage Management (ASM) instance created on a Linux machine? (Choose two.)
A. You can allocate only a whole disk for ASM. B. You can perform an RMAN backup of the ASM disks. C. You cannot change the redundancy of the diskgroups. D. You can have only one ASM instance on one Linux machine.
Answer: C, D
QUESTION: 5 Given below are the configuration changes done to set a hard limit for system resources: 1) Edit the limit.conf file in the /etc/security directory. 2) Edit the .bash_profile file. 3) Edit the login file in the /etc/pam.d directory. 4) Issue the ulimit command. Identify the steps that are required.
A. 1, 2, 3, 4 B. 1 and 2; 3 and 4 not required C. 1 and 3; 2 and 4 not required D. 2 and 4; 1 and 3 not required
Answer: C
QUESTION: 6 Which statement correctly describes the relationship between the DB_WRITER_PROCESSES initialization parameter and I/O slaves that are enabled in the Oracle database instance?
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A. Setting DB_WRITER_PROCESSES to more than one reduces DBWR_IO_SLAVES to one. B. Enabling I/O slaves forces the value of the DB_WRITER_PROCESSES parameter to be set to one. C. Each DBWR process uses a single I/O slave when DB_WRITER_PROCESSES is set to more than one. D. The database performance is directly proportional to the number of I/O slaves when DB_WRITER_PROCESSES is set to more than one.
Answer: B
QUESTION: 7 View the Exhibit.
Examine the highlighted entry in the /etc/fstab file. Which two statements are true about this entry? (Choose two.)
A. The entry sets the size of the shared memory segment. B. The entry creates a shared memory file system on /dev/shm. C. The entry enables bigpages for the shared memory file system. D. When a database instance is started with the extended buffer cache enabled, then /dev/shm corresponds to the database buffer cache.
Answer: B, D
QUESTION: 8 Which command can you execute to display the statistics of total memory, swap usage, and adjustments to free and used memory?
A. top B. sar
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