单选题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 informati

题目

单选题

You are analyzing the components of the redo log mechanisms in your Oracle database. Which of the following purposes does the CKPT process serve?（）

Writes buffers to disk

Writes current redo log number to datafile headers

Writes redo log information to disk

Reads information into memory for users

参考答案和解析

正确答案： C

解析：暂无解析

更多“单选题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 informati”相关问题

第1题

Because of hardware failure， you decided to drop a redo log member from the database. Which condition should be met to drop a redo log file？（）A、 The redo log file should belong to an active group.B、 The redo log file should belong to an inactive group.C、 The redo log file should belong to the current group.D、 The redo log file can be dropped only if all the transactions are stopped.E、 Before a redo log file is dropped， it should be deleted from the operating system （OS）.

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第2题

In your production database， you have observed that the database server performance degrades whenever there is a switch between the log groups. On further investigation， you find that the database is running in ARCHIVELOG mode and the archived log files are being written to the same disk that is used to store the redo log members. Which two actions would you take to improve the performance of the database server？（）A、increase the size of the redo log bufferB、increase the number of redo log groupsC、increase the number of log writer processesD、increase the number of ARCn processesE、change the appropriate LOG_ARCHIVE_DEST_n parameter to place the archived log files in a separate location

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第3题

You have the following online redo log configuration： Group Member 1 ’/disk1/oradata/redo01a.log’ 2 ’/disk2/oradata/redo02a.log’ 3 ’/disk3/oradata/redo03a.log’ You decide to multiplex the online redo log groups for recovery of redo log files in case of any disaster. Which two statements will you NOT issue to multiplex the online redo log files？（）A、 ALTER DATABASE ADD LOGFILE MEMBER ’/disk1/oradata/redo01b.log’ TO GROUP 1；B、 ALTER DATABASE ADD LOGFILE MEMBER ’/disk2/oradata/redo01b.log’ TO GROUP 1；C、 ALTER DATABASE ADD LOGFILE MEMBER ’/disk1/oradata/redo02b.log’ TO GROUP 2；D、 ALTER DATABASE ADD LOGFILE MEMBER ’/disk2/oradata/redo02b.log’ TO GROUP 2；E、 ALTER DATABASE ADD LOGFILE MEMBER ’/disk1/oradata/redo3b.log’ TO GROUP 3；F、 ALTER DATABASE ADD LOGFILE MEMBER ’/disk2/oradata/redo3b.log’ TO GROUP3；

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第4题

Which two statements about the background process of the database writer are true（）A、It is possible to have multiple database writers in an Oracle instance.B、It writes dirty buffers， if any， to data files whenever a checkpoint occurs.C、It writes dirty buffers， if any， to data files whenever a transaction commits.D、It writes dirty buffers， if any， to data files before the log writer （LGWR） writes

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第5题

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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第6题

Your boss at Supportcenter.cn wants you to clarify Oracle 10g. Which statement regarding the usage of redo log files during instance recovery is true？（）A、Transactions are rolled back using redo log files.B、Transactions are rolled forward using redo log files.C、Transactions are rolled back using redo log files and archived log files.D、Transactions are rolled forward using redo log files and rolled back using redo log files.

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第7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 informati

题目

参考答案和解析

更多“单选题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 informati”相关问题

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