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Here, a brief talk about Testinside Oracle’s architecture, so that beginners have a general understanding of Oracle.

1, the physical structure (the control files, data files, redo log files, parameter files, archived files, password files)

2, the logical structure (tablespaces, segments, district, block)

3, the memory allocation (SGA and PGA)

4, the background process (data write process, the log writing process, system monitoring, process monitoring, checkpoint process, the archiving process, services, processes, user process)

5, Oracle routines: Oracle SGA memory structures and routines from the database used to manage the composition of the background process. Routines can only open and use a database.

6, SCN (System ChangeNumber): system change number, a serial number within the system maintenance. When the system needs to be updated automatically increase the time, he is the system in order to maintain data consistency and an important indicator of recovery.

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$ 49.95 1z0-042 Exam
oracle database 10g:administration i
Exam Number/Code : 1z0-042
Exam Name : oracle database 10g:administration i
Questions and Answers : 287 Q&As
Update Time: 2010-08-05
Price: $ 49.95
1. You are using the backup scheduler in Enterprise Manager (EM) to schedule a backup of your database.
Which type of script does the backup scheduler generate?
A. SQL script
B. PL/SQL script
C. Operating System (OS) script
D. Enterprise Manager (EM) script
E. Recovery Manager (RMAN) script
Answer: E
2. In your Oracle 10g database , you have scheduled a job to update the optimizer statistics at 05:00 pm every Friday. The job has successfully completed. Which three pieces of information would you check to confirm that the statistics have been collected? (Choose three.)
A. average row size
B. last analyzed date
C. size of table in bytes
D. size of table in database blocks
E. number of free blocks in the free list
F. number of extents present in the table
Answer: ABD
3. You are in the middle of a transaction and very crucial data has been modified. Because of a hardware failure, the instance has shut down before synchronizing all the database files.
Which two statements are true? (Choose two.)
A. On startup, SMON coordinates instance recovery.
B. On startup, CKPT coordinates instance recovery.
C. On startup, use RMAN to perform instance recovery.
D. Uncommitted changes will be rolled back after the database is opened.
E. On startup, perform media recovery and then instance recovery.
F. On startup, all the files will be synchronized and you get both committed and uncommitted data.
Answer: AD

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