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单选题
Which background process reads the redo log buffer and writes it to a file？（）
A
ARCn
B
DBWn
C
CKPT
D
LGWR
E
PMON
F
SMON
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Which background process sequentially writes Flashback Database data from the flashback buffer to the Flashback Database logs？（）A、 DBWnB、 RECOC、 RVWRD、 LGWR
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Note the functionalities of various background processes： 1：Perform recovery at instance startup. SMON 2：Free the resources used by a user process when it fails. PMON 3：Cleanup the database buffer cache when a process fails. PMON 4：Dynamically register database services with listeners. PMON 5：Monitor sessions for idle session timeout. PMON 6：Cleanup unused temporary segments. SMON 7：Record the checkpoint information in control file. CKPT Which option has the correct functionalities listed for a background process（）A、Checkpoint （CKPT）： 1， 2， 5B、System Monitor （SMON）： 1， 6C、Process Monitor （PMON）： 4， 6， 7D、Database Writer （DBWR）： 1， 3， 4
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Which statement is true regarding the Archiver （ARCn） process，archived log files，and recovery？ （）A、A database backup, combined with archived redo log files, guarantees that all committed data can be recovered to the point of failure. B、During recovery the ARCn background process copies its redo entries identified for recovery by the control file to the data files. C、After each write to an archived log, the mandatory background process ARCn writes its log sequence number and the first and last SCN number within the log sequence to the control file. D、At database recover time, and archived redo log is uniquely identified for recovery use by its redo thread number and destination ID number retrieved from the control file.
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You are analyzing the components of the redo log mechanisms in your Oracle database. Which of the following purposes does the CKPT process serve?（）A、Writes buffers to disk B、Writes current redo log number to datafile headers C、Writes redo log information to disk D、Reads information into memory for users
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Your production database is running in the ARCHIVELOG mode and the ARCn process is functional. You have two online redo log groups. Which three background processes would be involved when a log switch happens？ （）A、archivalB、log writerC、database writerD、system monitorE、process monitorF、change tracking writer
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Note the following functionalities of various background processes： 1：Record the checkpoint information in data file headers. CKPT 2：Perform recovery at instance startup. SMON 3：Cleanup unused temporary segments. SMON 4：Free the resources used by a user process when it fails. 5：Dynamically register database services with listeners. 6：Monitor sessions for idle session timeout. Which option has the correct functionalities listed for a background process（）A、Archiver Process （ARCn）：1， 2，5B、System Monitor Process （SMON）：1，4，5C、Process Monitor Process （PMON）：4，5，6D、Database Writer Process （DBWn）：1，3，4
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Which background process reads the redo log buffer and writes it to a file？（）A、ARCnB、DBWnC、CKPTD、LGWRE、PMONF、SMON
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Which component of the SGA stores parsed SQL statements is used for process sharing?（）A、Buffer cache B、Redo log buffer C、Private SQL area D、Library cache E、Row cache
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Which statement is true about FLUSH LOGS command?（）A、It requires the RELOAD, FILE, and DROP privilegesB、It closes and reopens all log filesC、It closes and sends binary log files to slave serversD、It flushes dirty pages in the buffer pool to the REDO logs
考题
The online redo log group configuration for your database is as follows： What will happen if the online redo log file ’ora02/oradata/redo02b.log’is corrupted while working on the database？（） A、 The database will hang.B、 The database will be crashed.C、 The database will be shut down.D、 The LGWR process writes redo log entries to the other redo log member of the Group2 group
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单选题The online redo log group configuration for your database is as follows： What will happen if the online redo log file ’ora02/oradata/redo02b.log’is corrupted while working on the database？（）A
The database will hang.B
The database will be crashed.C
The database will be shut down.D
The LGWR process writes redo log entries to the other redo log member of the Group2 group
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单选题The Log Writer （LGWR） process reads information from the （）and writes it to the online logs.A
large poolB
shared poolC
data buffer cacheD
redo log bufferE
data dictionary cache
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单选题Which background process sequentially writes Flashback Database data from the flashback buffer to the Flashback Database logs？（）A
DBWnB
RECOC
RVWRD
LGWR
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单选题You enabled block change tracking for faster incremental backups in your database. Which background process writes to the change tracking file？（）A
RBALB
CKPTC
SMOND
PMONE
MMONF
CTWRG
DBWR
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单选题Note the functionalities of various background processes： 1：Perform recovery at instance startup. SMON 2：Free the resources used by a user process when it fails. PMON 3：Cleanup the database buffer cache when a process fails. PMON 4：Dynamically register database services with listeners. PMON 5：Monitor sessions for idle session timeout. PMON 6：Cleanup unused temporary segments. SMON 7：Record the checkpoint information in control file. CKPT Which option has the correct functionalities listed for a background process（）A
Checkpoint （CKPT）： 1， 2， 5B
System Monitor （SMON）： 1， 6C
Process Monitor （PMON）： 4， 6， 7D
Database Writer （DBWR）： 1， 3， 4
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单选题Which statement is true regarding the Archiver （ARCn） process，archived log files，and recovery？ （）A
A database backup, combined with archived redo log files, guarantees that all committed data can be recovered to the point of failure. B
During recovery the ARCn background process copies its redo entries identified for recovery by the control file to the data files. C
After each write to an archived log, the mandatory background process ARCn writes its log sequence number and the first and last SCN number within the log sequence to the control file. D
At database recover time, and archived redo log is uniquely identified for recovery use by its redo thread number and destination ID number retrieved from the control file.
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单选题Note the following functionalities of various background processes： 1：Record the checkpoint information in data file headers. CKPT 2：Perform recovery at instance startup. SMON 3：Cleanup unused temporary segments. SMON 4：Free the resources used by a user process when it fails. 5：Dynamically register database services with listeners. 6：Monitor sessions for idle session timeout. Which option has the correct functionalities listed for a background process（）A
Archiver Process （ARCn）：1， 2，5B
System Monitor Process （SMON）：1，4，5C
Process Monitor Process （PMON）：4，5，6D
Database Writer Process （DBWn）：1，3，4
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